Subjects -> CHEMISTRY (Total: 1001 journals)
    - ANALYTICAL CHEMISTRY (59 journals)
    - CHEMISTRY (726 journals)
    - CRYSTALLOGRAPHY (23 journals)
    - ELECTROCHEMISTRY (28 journals)
    - INORGANIC CHEMISTRY (45 journals)
    - ORGANIC CHEMISTRY (49 journals)
    - PHYSICAL CHEMISTRY (71 journals)

CHEMISTRY (726 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 735 Journals sorted alphabetically
Accounts of Materials Research     Hybrid Journal  
Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 36)
ACS Applied Polymer Materials     Hybrid Journal   (Followers: 15)
ACS Catalysis     Hybrid Journal   (Followers: 78)
ACS Chemical Neuroscience     Hybrid Journal   (Followers: 25)
ACS Combinatorial Science     Hybrid Journal   (Followers: 25)
ACS Macro Letters     Hybrid Journal   (Followers: 34)
ACS Materials Letters     Open Access   (Followers: 4)
ACS Medicinal Chemistry Letters     Hybrid Journal   (Followers: 49)
ACS Nano     Hybrid Journal   (Followers: 451)
ACS Photonics     Hybrid Journal   (Followers: 19)
ACS Symposium Series     Full-text available via subscription   (Followers: 3)
ACS Synthetic Biology     Hybrid Journal   (Followers: 40)
Acta Chemica Iasi     Open Access   (Followers: 8)
Acta Chemica Malaysia     Open Access  
Acta Chimica Slovaca     Open Access   (Followers: 4)
Acta Chimica Slovenica     Open Access   (Followers: 2)
Acta Chromatographica     Full-text available via subscription   (Followers: 9)
Acta Facultatis Medicae Naissensis     Open Access   (Followers: 1)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 10)
Acta Scientifica Naturalis     Open Access   (Followers: 3)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 9)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 10)
Adsorption Science & Technology     Open Access   (Followers: 9)
Advanced Electronic Materials     Hybrid Journal   (Followers: 7)
Advanced Functional Materials     Hybrid Journal   (Followers: 81)
Advanced Journal of Chemistry, Section A     Open Access   (Followers: 15)
Advanced Journal of Chemistry, Section B     Open Access   (Followers: 14)
Advanced Science Focus     Free   (Followers: 7)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advanced Therapeutics     Hybrid Journal   (Followers: 1)
Advances in Chemical Engineering and Science     Open Access   (Followers: 108)
Advances in Chemical Science     Open Access   (Followers: 50)
Advances in Chemistry     Open Access   (Followers: 39)
Advances in Chemistry     Full-text available via subscription   (Followers: 6)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 21)
Advances in Drug Research     Full-text available via subscription   (Followers: 27)
Advances in Environmental Chemistry     Open Access   (Followers: 11)
Advances in Enzyme Research     Open Access   (Followers: 13)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 20)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 11)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 35)
Advances in Nanoparticles     Open Access   (Followers: 20)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 20)
Advances in Polymer Science     Hybrid Journal   (Followers: 54)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 19)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 22)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 7)
Advances in Science and Technology     Full-text available via subscription   (Followers: 17)
Aerosol Science and Engineering     Hybrid Journal  
African Journal of Bacteriology Research     Open Access  
African Journal of Chemical Education     Open Access   (Followers: 6)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 7)
Aggregate     Open Access   (Followers: 3)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 3)
Al-Kimia : Jurnal Penelitian Sains Kimia     Open Access  
Alchemy : Journal of Chemistry     Open Access   (Followers: 5)
Alchemy : Jurnal Penelitian Kimia     Open Access   (Followers: 2)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 2)
Alotrop     Open Access  
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 71)
American Journal of Biochemistry and Molecular Biology     Open Access   (Followers: 24)
American Journal of Chemistry     Open Access   (Followers: 41)
American Journal of Plant Physiology     Open Access   (Followers: 13)
Analyst     Full-text available via subscription   (Followers: 40)
Analytical Science Advances     Open Access   (Followers: 2)
Angewandte Chemie     Hybrid Journal   (Followers: 236)
Angewandte Chemie International Edition     Hybrid Journal   (Followers: 353)
Annales Universitatis Mariae Curie-Sklodowska, sectio AA – Chemia     Open Access   (Followers: 1)
Annals of Clinical Chemistry and Laboratory Medicine     Open Access   (Followers: 8)
Annual Reports in Computational Chemistry     Full-text available via subscription   (Followers: 4)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 6)
Annual Reports Section B (Organic Chemistry)     Full-text available via subscription   (Followers: 9)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 13)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 16)
Antiviral Chemistry and Chemotherapy     Open Access   (Followers: 2)
Applied Organometallic Chemistry     Hybrid Journal   (Followers: 12)
Applied Spectroscopy     Full-text available via subscription   (Followers: 27)
Applied Surface Science     Hybrid Journal   (Followers: 33)
Arabian Journal of Chemistry     Open Access   (Followers: 6)
ARKIVOC     Open Access   (Followers: 1)
Asian Journal of Applied Chemistry Research     Open Access   (Followers: 2)
Asian Journal of Biochemistry     Open Access   (Followers: 3)
Asian Journal of Chemical Sciences     Open Access   (Followers: 1)
Asian Journal of Chemistry and Pharmaceutical Sciences     Open Access   (Followers: 2)
Asian Journal of Physical and Chemical Sciences     Open Access   (Followers: 3)
Atomization and Sprays     Full-text available via subscription   (Followers: 8)
Australian Journal of Chemistry     Hybrid Journal   (Followers: 7)
Autophagy     Hybrid Journal   (Followers: 7)
Avances en Quimica     Open Access  
Biochemical Pharmacology     Hybrid Journal   (Followers: 11)
Biochemistry     Hybrid Journal   (Followers: 484)
Biochemistry Insights     Open Access   (Followers: 7)
Biochemistry Research International     Open Access   (Followers: 6)
BioChip Journal     Hybrid Journal  
Bioinorganic Chemistry and Applications     Open Access   (Followers: 11)
Biointerface Research in Applied Chemistry     Open Access   (Followers: 3)
Biointerphases     Open Access   (Followers: 1)
Biology, Medicine, & Natural Product Chemistry     Open Access   (Followers: 4)
Biomacromolecules     Hybrid Journal   (Followers: 27)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 11)
Biomedical Chromatography     Hybrid Journal   (Followers: 6)
Biomolecular NMR Assignments     Hybrid Journal   (Followers: 4)
BioNanoScience     Partially Free   (Followers: 6)
Bioorganic & Medicinal Chemistry     Hybrid Journal   (Followers: 215)
Bioorganic & Medicinal Chemistry Letters     Hybrid Journal   (Followers: 88)
Bioorganic Chemistry     Hybrid Journal   (Followers: 10)
Biopolymers     Hybrid Journal   (Followers: 18)
Biosensors     Open Access   (Followers: 4)
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 1)
Bitácora Digital     Open Access  
Boletin de la Sociedad Chilena de Quimica     Open Access  
Bulletin of Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 1)
Bulletin of the Chemical Society of Japan     Full-text available via subscription   (Followers: 26)
Bulletin of the Korean Chemical Society     Hybrid Journal   (Followers: 1)
C - Journal of Carbon Research     Open Access   (Followers: 5)
Cakra Kimia (Indonesian E-Journal of Applied Chemistry)     Open Access  
Canadian Association of Radiologists Journal     Full-text available via subscription   (Followers: 2)
Canadian Journal of Chemistry     Hybrid Journal   (Followers: 13)
Canadian Mineralogist     Full-text available via subscription   (Followers: 7)
Carbohydrate Polymer Technologies and Applications     Open Access   (Followers: 3)
Carbohydrate Polymers     Hybrid Journal   (Followers: 13)
Carbohydrate Research     Hybrid Journal   (Followers: 26)
Carbon     Hybrid Journal   (Followers: 76)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 9)
Catalysis Science and Technology     Hybrid Journal   (Followers: 13)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 4)
Catalysts     Open Access   (Followers: 14)
Cell Reports Physical Science     Open Access  
Cellulose     Hybrid Journal   (Followers: 17)
Cereal Chemistry     Full-text available via subscription   (Followers: 6)
ChemBioEng Reviews     Full-text available via subscription   (Followers: 3)
ChemCatChem     Hybrid Journal   (Followers: 11)
Chemical and Engineering News     Free   (Followers: 24)
Chemical Bulletin of Kazakh National University     Open Access  
Chemical Communications     Full-text available via subscription   (Followers: 88)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 28)
Chemical Physics Letters : X     Open Access   (Followers: 4)
Chemical Research in Chinese Universities     Hybrid Journal   (Followers: 4)
Chemical Research in Toxicology     Hybrid Journal   (Followers: 25)
Chemical Reviews     Hybrid Journal   (Followers: 267)
Chemical Science     Open Access   (Followers: 44)
Chemical Science International Journal     Open Access   (Followers: 1)
Chemical Technology     Open Access   (Followers: 71)
Chemical Vapor Deposition     Hybrid Journal   (Followers: 5)
Chemie in Unserer Zeit     Hybrid Journal   (Followers: 56)
Chemie-Ingenieur-Technik (Cit)     Hybrid Journal   (Followers: 23)
ChemInform     Hybrid Journal   (Followers: 9)
Chemistry     Open Access  
Chemistry & Biodiversity     Hybrid Journal   (Followers: 7)
Chemistry & Biology     Full-text available via subscription   (Followers: 31)
Chemistry & Industry     Full-text available via subscription   (Followers: 8)
Chemistry - A European Journal     Hybrid Journal   (Followers: 224)
Chemistry - An Asian Journal     Hybrid Journal   (Followers: 20)
Chemistry Africa : A Journal of the Tunisian Chemical Society     Hybrid Journal  
Chemistry and Materials Research     Open Access   (Followers: 24)
Chemistry Central Journal     Open Access   (Followers: 5)
Chemistry Education Research and Practice     Free   (Followers: 8)
Chemistry Education Review     Open Access   (Followers: 5)
Chemistry in Education     Open Access   (Followers: 9)
Chemistry Letters     Full-text available via subscription   (Followers: 49)
Chemistry of Heterocyclic Compounds     Hybrid Journal   (Followers: 4)
Chemistry of Materials     Hybrid Journal   (Followers: 338)
Chemistry of Natural Compounds     Hybrid Journal   (Followers: 10)
Chemistry World     Full-text available via subscription   (Followers: 20)
Chemistry-Didactics-Ecology-Metrology     Open Access   (Followers: 1)
ChemistryOpen     Open Access   (Followers: 1)
ChemistrySelect     Hybrid Journal  
Chemistry–Methods     Open Access   (Followers: 2)
Chemkon - Chemie Konkret, Forum Fuer Unterricht Und Didaktik     Hybrid Journal  
ChemNanoMat     Hybrid Journal   (Followers: 1)
Chemoecology     Hybrid Journal   (Followers: 3)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 14)
Chemosensors     Open Access   (Followers: 1)
ChemPhotoChem     Hybrid Journal  
ChemPhysChem     Hybrid Journal   (Followers: 14)
ChemPlusChem     Hybrid Journal   (Followers: 2)
Chempublish Journal     Open Access   (Followers: 1)
ChemSystemsChem     Hybrid Journal   (Followers: 2)
ChemTexts     Hybrid Journal   (Followers: 1)
CHIMIA International Journal for Chemistry     Open Access   (Followers: 2)
Chinese Journal of Chemistry     Hybrid Journal   (Followers: 6)
Chinese Journal of Polymer Science     Hybrid Journal   (Followers: 13)
Chromatographia     Hybrid Journal   (Followers: 22)
Chromatography     Open Access   (Followers: 3)
Chromatography Research International     Open Access   (Followers: 5)
Ciencia     Open Access   (Followers: 1)
Clay Minerals     Hybrid Journal   (Followers: 9)
Cogent Chemistry     Open Access   (Followers: 3)
Colloid and Interface Science Communications     Open Access  
Colloid and Polymer Science     Hybrid Journal   (Followers: 12)
Colloids and Interfaces     Open Access  
Colloids and Surfaces B: Biointerfaces     Hybrid Journal   (Followers: 8)
Combinatorial Chemistry & High Throughput Screening     Hybrid Journal   (Followers: 4)
Combustion Science and Technology     Hybrid Journal   (Followers: 24)
Comments on Inorganic Chemistry: A Journal of Critical Discussion of the Current Literature     Hybrid Journal   (Followers: 2)

        1 2 3 4 | Last

Similar Journals
Journal Cover
Colloid and Polymer Science
Journal Prestige (SJR): 0.597
Citation Impact (citeScore): 2
Number of Followers: 12  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0303-402X - ISSN (Online) 1435-1536
Published by Springer-Verlag Homepage  [2658 journals]
  • Construction and characterization of the novel polymer/Ag nanocomposite
           coated on glass bead as filter for inactivation of E. coli in water

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      Abstract: Abstract In this project, pseudo-poly(amino acid)s (PAAs) containing different amino acids in main chain were synthesized by direct polyesterification of N,N-(pyromellitoyl)-bis-D-4-hydroxyphenylglycine dimethyl ester as biologically active diol with diacid monomer derived from different amino acids was carried by tosyl chloride/pyridine/N,N′-dimethylformamide as a condensing agent. All biological properties of the polymers were determined by biological evaluation in bacterial media. PAAs containing silver nanoparticles were fabricated by in situ method using dimethylformaide (DMF) as a solvent which leads to a spontaneous reduce in room temperature. Furthermore, these biopolymer nanocomposite/Ag thin films were immobilized on glass microbeads. The chemical structures of synthesized PAAs and PAA/Ag nanocomposite (NC) were considered by FTIR, 1H-NMR spectroscopy, transmission electron microscopy (TEM), elemental analysis, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy, and energy dispersive X-ray (EDAX). The results of EDAX and TEM analysis of PAAs/Ag NC showed that silver particles have homogeneous dispersion and uniformity in nano-dimensions about 50 nm in PAAs matrix. The micro glass beads were coated with PAA/Ag nanocomposite thin film and placed in a column through for the disinfecting effect of Escherichia coli in water was evaluated very well.
      PubDate: 2021-10-20
       
  • Amine functional silica–supported bimetallic Cu-Ni nanocatalyst and
           investigation of some typical reductions of aromatic nitro-substituents

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      Abstract: Abstract Herein, preparation and application of amine functionalized silica (NH2-SiO2)–supported Cu-Ni nanocatalyst are reported. Cu-Ni nanoparticles (NPs) are doped on the NH2-SiO2 support via in situ simultaneous reduction of Cu and Ni ions. The X-ray diffraction (XRD) pattern revealed the face-centered-cubic (fcc) crystalline alloy structure of Cu-Ni NPs in the NH2-SiO2/Cu-Ni nanocatalyst. X-ray photoelectron spectroscopy (XPS) analyses showed that anchored Cu-Ni NPs contained Cu0 and Cu2+ species, while Ni was present at its bivalent state (Ni2+). In comparison to the unsupported Cu-Ni bimetal NPs, the supported NH2-SiO2/Cu-Ni nanocatalyst showed superior catalytic activity in chemical reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP), giving 98.5% conversion at pH 6 within 15 min. The kinetics preferably followed the pseudo-first-order rate model. The NH2-SiO2/Cu-Ni nanocatalyst is recoverable magnetically from the reaction media and can be recycled up to six cycles without much loss in catalytic activity.
      PubDate: 2021-10-18
       
  • Increase in the physical performance of nanostructured starch/chitosan
           blends with montmorillonite

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      Abstract: In this research, the effect of montmorillonite nanoparticles (Mt) filling polymer blends (PB) of starch/chitosan at concentrations of (0.5 and 1.0) g of Mt/100 g of PB was investigated. The Mt was dispersed at a rotational frequency of 2500 rpm in a cold bath at 0 °C, allowing to obtain nanoparticles with an average size of (315 ± 14) nm. On the one hand, the films presented an increase of 72.4% in the tensile strength as a function of the increase in the concentration of chitosan. Consequently, the composites showed an increase of 85.6% due to the increase in chitosan and the Mt presence. In addition, the composites had an improvement of 33.7% in the water vapor barrier explained by the lower permeability index in function to the higher clay nanoparticle concentration. On another hand, the yellowness characteristic color was evident with the increase of chitosan concentration. The biodegradable PB: Mt films produced in this research have a high potential for industrial application and can be used as food package materials. Graphical abstract
      PubDate: 2021-10-14
       
  • Influence of fatty alcohol mixing ratios on physicochemical properties of
           stearyl–cetyl–polysorbate 60–water ternary system: Insights from
           experiments and computer simulations

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      Abstract: Abstract The structure and stability of ternary systems prepared with polysorbate 60 and various combinations of cetyl (C16) and stearyl (C18) alcohols were examined as they aged over 3 months at \(25^\circ C\) . Rheological results showed that the consistency of these systems increased initially during roughly the first week of aging, which was succeeded by little changes in consistency (systems containing from 30% to 70% C18, with the 50% C18 system showing the highest consistencies) or significant breakdown of structure (remaining systems). The formation and/or disintegration of all ternary systems were also detected by microscopy and differential scanning calorimetry experiments. This study emphasizes the fact that the structure and consistency of ternary systems are dominantly controlled by the swelling capacity of the lamellar gel phase. Molecular dynamics simulations were performed to provide details on the molecular mechanism of stability. Computational results support the hypothesis experimentally proposed for the stability of the mixed system being due to an increased flexibility of the alcohol with a longer hydrocarbon chain. Computational results are in excellent agreement with experimental conclusions. Additionally, they show that in the mixed system, alcohols with shorter hydrocarbon chain become more rigid. These molecular details could not be available in experimental measurements.
      PubDate: 2021-10-13
       
  • Diffusiophoretic velocity of a large spherical colloidal particle in a
           solution of general electrolytes

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      Abstract: Abstract The general expression is derived for the diffusiophoretic velocity of a large spherical colloidal particle of radius a in a concentration gradient of general electrolytes of Debye-Hückel parameter κ. On the basis of this expression, simple approximate analytic expressions for the diffusiophoretic velocity correct to the order of (1/κa)0 are derived, which can be applied for large particles with κa ≥ 50 at arbitrary values of the particle zeta potential with negligible errors.
      PubDate: 2021-10-13
       
  • How does processing in supercritical carbon dioxide influence the Nafion
           film properties'

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      Abstract: Abstract We address the effect of exposure to sc CO2 on the properties of Nafion membranes. A simple model is proposed to describe the pressure-induced reorganization of the phase-separated matrix. The model predicts that the cylindrical ionic pores in Nafion restructure under pressure applied: wider pores shrink in diameter to a larger degree than narrower ones. As a result, the pores ensemble becomes more monodisperse and narrower as a whole, which should determine detectable changes in the transport properties. The consistency of the model predictions with the main experimental observations was checked. In particular, the membranes were exposed to sc CO2 at 45 °C and pressures ranging from 20 to 750 bar. The modified samples demonstrate the lower water uptake, the higher the pressure during the treatment. This observation correlates well with the cylindrical channels becoming more monodisperse and narrower. Moreover, both proton conductivity and relative crystallinity increase with increasing pressure from 96 to 105 mS/cm and from 20 to 22%, respectively. Methanol permeability decreases from 16 × 10–7 cm2/s for pure Nafion to 10 × 10–7 cm2/s for the treated membrane. DSC measurements reveal larger fraction of bound water for the modified films. Apparently, the bound water is sufficient to ensure high proton conductivity. The improved selectivity is explained by the narrower channels.
      PubDate: 2021-10-12
       
  • A comparative study on the reinforcement effect of polyethylene
           terephthalate composites by inclusion of two types of functionalized
           graphene

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      Abstract: Abstract In this paper, graphene oxide (GO) and maleic anhydride–functionalized pristine graphene (MAGN) based on Diels-Alder reaction were synthesized in order to comparatively study the reinforcement effect on the polyethylene terephthalate (PET) composites. PET nanocomposites with GO or MAGN were prepared by a melt-blending method with varying concentrations of nanofillers from 0.05 wt to 0.3 wt%. The structure, the thermal stability, and the mechanical and crystallization properties of the obtained PET composites were systematically investigated by scanning electronic microscopy (SEM), tensile tests, thermo-gravimetric analysis (TGA), differential scanning Calorimetry (DSC), and dynamic mechanical analysis (DMA). The results show that the thermal stability and the mechanical and crystallization properties of EPT are improved by GO and MAGN inclusion. When the filler loading was 0.1 wt%, the tensile strength of MAGN/PET and GO/PET was increased by 28.9 % and 11.8% compared with the pure PET, which indicates the MAGN shows a better reinforcement effect on PET nanocomposites. Moreover, the MAGN also acts as a more efficient nucleating agent for PET compared with GO exhibiting higher degrees of crystallinity.
      PubDate: 2021-10-11
       
  • Rheological and mechanical behavior of blend-based polymer nanocomposites
           containing Janus and non-Janus silica nanoparticles

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      Abstract: Abstract In this study, the effects of Janus and non-Janus silica nanoparticles on the rheological and mechanical properties of blend-based polymer nanocomposites were investigated. The Janus nanoparticles were synthesized in O/W Pickering emulsion via desymmetrization process in two stages while a simple surface modification stage was used to prepare homogenously modified nanoparticles. The blend samples were prepared using polystyrene (PS) and polymethylmethacrylate (PMMA), and accordingly, (3-aminopropyl)triethoxysilane (APTES) and hexadecyltrimethoxysilane (HDTMS) were used, as surface modification agents, to enhance the compatibility of the nanoparticles with polymer phases. After molding into suitable pieces, the samples were subjected to rheology and tensile tests in order to investigate their characteristics in both melt and glassy states. The morphology and dispersion location of the nanoparticles were investigated using light microscopy, and the results were compared to some related data from the literature. Comparing the results of the samples containing Janus and non-Janus nanoparticles revealed that the Janus nanoparticles were very effective in enhancing the processibility and mechanical properties (e.g., tensile modulus and strength) of the PS/PMMA blend. Moreover, it was found that the negative effects of the aggregation/agglomeration of the nanoparticles were more significant in the case of Janus nanoparticles located at the polymer/polymer interface.
      PubDate: 2021-10-08
       
  • Synthesis of succinylated carboxymethyl starches and their role as
           adsorbents for the removal of phenol

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      Abstract: Phenol is the toxicant present in cigarette smoke that causes pulmonary diseases, eyes infection, and even various kinds of cancer. So, in this research, an attempt was done to prepare a suitable absorbent to remove phenol from cigarette smoke. A novel bio-based adsorbent succinylated carboxymethyl starch (S-CMS) was prepared by reacting carboxymethyl starch (CMS) with succinic anhydride (SA) in the presenting of N, N-dimethylformamide (DMF) solvent and pyridine. The structure of the S-CMS was confirmed by spectroscopic techniques including proton nuclear magnetic resonance and Fourier transform infrared. The S-CMS crystallinity and thermal properties were checked by x-ray diffraction and thermogravimetric analysis. The results showed a decrease in thermal properties and crystallinity for S-CMS. The S-CMS were tested as adsorbents for the removal of phenol. The adsorption efficiencies of CMS, S-CMS1, S-CMS2, and S-CMS3 towards phenol were shown to be 0.297 g/g, 0.321 g/g, 0.322 g/g, and 0.324 g/g, respectively. Graphical abstract
      PubDate: 2021-10-07
       
  • A role of visible light–mediated surface grafting on nano-SiO2 in
           Pickering emulsions

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      Abstract: The fast development of Pickering emulsion systems inspires burgeoning demand on the universal synthesis platform for the surface modification of solid particle emulsifiers. In this work, a mild and convenient “visible light–mediated surface grafting through (VSGT)” strategy is proposed. Through the two-step strategy, silica nanoparticles (SNPs) were firstly modified by vinyl alkoxysilane and then used as the substrate for grafting homopolymer brushes via reversible addition-fragmentation chain transfer polymerization under the irradiation of a compact fluorescent lamp (CFL) light source. The whole process was proceeded at room temperature without tedious conditions and complex operations. Importantly, simply by changing the monomer types, hydrophilic acrylic polymer chains can all be grafted on SNP with controlled chain length and relatively uniform high surface densities including poly(acrylic acid) (PAA), poly(N,N-dimethylacrylamide) (PDMA), poly(N-isopropylacrylamide) (PNIPAM), and poly(diacetone acrylamide) (PDAAM). Through the synthesis platform, the interfacial performance of the surface-grafted nanoparticles exhibited as amendable working as Pickering emulsifiers in oil–water system, illustrated by the evolution of interfacial tensions and the inner structures of the corresponding Pickering emulsions. Moreover, the emulsion stabilized by SNP-g-PAA and SNP-g-PNIPAM showed pH and temperature triggered emulsification-demulsification behaviors, respectively, convincing the contribution of the surface grafted polymers and provide a feasible clue for the subtle design on the interfacial texture in advanced Pickering emulsions. Graphical abstract
      PubDate: 2021-10-04
       
  • RGDS- and doxorubicin-modified
           poly[N-(2-hydroxypropyl)methacrylamide]-coated γ-Fe2O3 nanoparticles for
           treatment of glioblastoma

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      Abstract: Block copolymer comprising of hydrophilic poly[N-(2-hydroxypropyl)methacrylamide] (PHP) and reactive poly[N-(2-hydrazinyl-2-oxoethyl)methacrylamide] (PMAH) was synthesized by a reversible addition-fragmentation chain transfer (RAFT) polymerization and conjugated with doxorubicin (Dox) and/or RGDS targeting peptide via one-step reaction using N-γ-maleimidobutyryl-oxysuccinimide ester. The resulting copolymer served as a coating of magnetic γ-Fe2O3 nanoparticles that were tested in cell proliferation and in vivo experiments on a mice model with inoculated rat C6 glioblastoma tumor. The nanoparticles conjugated with RGDS peptide and doxorubicin easily engulfed both C6 tumor cell line, primary glioblastoma (GB) cells, and human mesenchymal stem cells (hMSC) used as a control; the particles decreased the GB cell growth by 45% compared to control cells without any treatment. Moreover, the γ-Fe2O3@P(HP-MAH)-RGDS-Dox nanoparticles injected into C6 glioblastoma cell-derived tumors grown in the posterior flank of mice decreased the tumor size and more apoptotic cells were spread compared to that treated with free Dox. Graphical
      PubDate: 2021-10-02
       
  • Correction to: Wormlike micelles formed by ultra‑long‑chain
           nonionic surfactant

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      PubDate: 2021-10-01
       
  • Correction to: Application of chain transfer agents in the two‑part
           dispersion polymerization of cross‑linked polymer microspheres

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      PubDate: 2021-10-01
       
  • Hyperbranched polyethylenimine–based polymeric nanoparticles: synthesis,
           properties, and an application in selective response to copper ion

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      Abstract: Hyperbranched polyethylenimines (hPEIs) have diverse biological applications; however, the intrinsic toxicity is a major concern in developing hPEI-based biomaterials. This work reports the synthesis, properties, and an application as a biocompatible hPEI-based material, namely, fluorescent oxidized hPEI polymeric nanoparticles (F-ohPEIs). The synthesis was achieved through oxidation of hPEI with H2O2 and subsequent cross-linking with formaldehyde, imparting to F-ohPEIs’ desired properties such as remarkably reduced positive charge density, hydrolytic degradability, low cytotoxicity, strong fluorescence emission, and stability. Furthermore, as an application, F-ohPEI demonstrated the ability to selectively respond to cupric ion in a wide concentration range of 0.02 ~ 10 μM with a low limit of detection of 0.013 μM. The synthesis strategy along with the F-ohPEI nanoparticles developed in this work is expected to find promising application in fabricating biocompatible hPEI-based biomaterials. Graphical abstract
      PubDate: 2021-10-01
       
  • Homogeneous rhodium ion catalyst encapsulated by benzoyl-terminated
           dendrimer: high hydrogenation and separation capabilities for diene
           copolymers

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      Abstract: Abstract Benzoyl chloride has been employed to react with primary amino groups on the surface of the second generation of poly(propylene imine) (G2-PPI) dendrimer to synthesize benzoyl-terminated dendrimer (G2-B) by a nucleophilic substitution reaction. A novel homogeneous catalyst of G2-B(Rh3+) has been prepared by complexing RhCl3·3H2O with G2-B, and further applied to the catalytic hydrogenation of nitrile butadiene rubber (NBR) and styrene butadiene rubber (SBR). The hydrogenation degrees (HDs) of HNBR and HSBR catalyzed by G2-B(Rh3+) are 99.2 and 92.1% respectively. The contents of Rh residue in the HNBR and HSBR catalyzed by G2-B(Rh3+) are only 41 and 31 ppm, respectively, which are respectively decreased by 84.5 wt% and 83.2 wt%, respectively, compared to those catalyzed by RhCl(PPh3)3.
      PubDate: 2021-10-01
       
  • Laccase-like nanozymes fabricated by copper and tannic acid for removing
           malachite green from aqueous solution

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      Abstract: Abstract Seeking simple, green, and inexpensive preparation methods and materials of enzyme mimics has always been highly desirable. In this paper, a nanocomposite with laccase activity was successfully fabricated by using a simple self-association method with copper and tannic acid. Characterizations through SEM, XRD, FTIR, and XPS showed that the Cu-TA hybrid composites had good spherical in shape with a diameter of about 20 nm and three different valence Cu ions (Cu2+, Cu+, and Cu0). The catalytic activity was displayed against typical oxidation substrate of laccases, 2,4-DP. Compared to natural laccases, Cu-TA composites were able to better tolerate changes of pH, temperature, ionic strength, and storage conditions. The Cu-TA composites could remove malachite green (MG) from aqueous solutions effectively. The removal efficiency of MG was optimized using a series of batch tests with single-factor experiment design. Under the optimum conditions, the removal efficiency of MG still retained about 90% after 3 times cycles. Therefore, the Cu-TA composites, as a laccases-like nanozyme, have excellent developing potential in wastewater treatment due to the low-cost of TA and simplicity of preparation.
      PubDate: 2021-10-01
       
  • Evaluation of critical packing parameter in the series of polytyrosine-PEG
           amphiphilic copolymers

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      Abstract: Here, we report on the evaluation of critical packing parameters, PC, of l-tyrosine and ethylene glycol (PEG) amphiphilic block copolymers. The copolymers were synthesized via l-tyrosine-N-carboxyanhydride ring-opening polymerization using different amino-terminated PEGs as macroinitiators. The size and shape of their associates formed in water were investigated by transmission electron microscopy and dynamic and static light scatterings. The copolymers containing 20–30 wt. % of Tyr formed rod-like micelles. The copolymers with 30–50 wt. % of Tyr formed spherical vesicles, while those with 50–80 wt. % Tyr formed irregularly shaped polymeric nanoparticles. PC of the copolymers was estimated as the ratio of the van der Waals volume of the hydrophobic block (V) to its length (L) and the cross-sectional area of the polar block (SH). The values of SH for each copolymer were calculated according to the equation obtained from the correlation analysis of the published data. The hydrophobic block length L was calculated in three ways, i.e., assuming that polytyrosine adopts (1) stretched, (2) amyloid hairpin, or (3) Gaussian coil conformation. In the latter case, the best match of the calculated PC values with the morphology of the copolymer assemblies was observed. Graphical abstract
      PubDate: 2021-10-01
       
  • Orientational screening of ssDNA-templated silver nanoclusters and
           application for bleomycin assay

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      Abstract: Abstract Orientational screening is a recently proposed strategy for the selection of DNA templates for silver nanoclusters (AgNCs). The feasibility of this strategy is facilitated by the accumulated experience of synthesizing DNA-templated AgNCs. Herein, a single-stranded DNA template of endowing AgNCs with high brightness (QY = 27.99%) was obtained through an orientational screening process. It was also found that double-stranded DNA rich in GC base pairs could also serve as synthesizing template for AgNCs. A facile method was then developed for the facile assay of bleomycin that might be added in illegally pronouncing products due to its low price and easy accessibility. The detection limit of this method was as low as 4.27 nM, with high sensitivity and good selectivity.
      PubDate: 2021-09-08
      DOI: 10.1007/s00396-021-04890-x
       
  • Correction to: Probing the protein corona around charged macromolecules:
           interpretation of isothermal titration calorimetry by binding models and
           computer simulations

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      PubDate: 2021-09-04
      DOI: 10.1007/s00396-021-04861-2
       
  • Tunable safranine T release from LbL films of single/blend polyanions

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      Abstract: Loading and release behavior of a cationic dye, namely, safranine-T, through layer-by-layer (LbL) multilayered films of poly(diallyldimethylammonium chloride) (PDADMAC) and single/blend anionic polyelectrolytes (PEs), namely, poly(acrylic acid) (PAA), and poly(styrenesulfonate) (PSS), are described. The growths of PDADMAC/PSS-PAA multilayers and their safranine-T sorption behavior are monitored using the UV–Vis technique and discussed in terms of blend composition of anionic PEs and pH as well as their hydrophilicity and topography. The dye loading and desorption properties of the LbL films prepared from single/blend negatively charged PEs mainly depend on the interactions of PEs and safranine T. Strong interactions between PSS and safranine T result in a higher dye entrapping inside LbL films whereas either PAA-rich or single PAA-based LbL film exhibits larger dye desorption. A higher PSS content in the feed blend composition leads to an observable increase in θave and surface roughness whereas the use of PAA can yield a flatter surface due to its partially recomposed chain conformational structure at pH 11. Consequently, LbL multilayers obtained from single and blend polyanions can be considered as an encouraging material platform for the controlled release of charged species such as protein, drug, and dye. because of their tunable physicochemical and morphological properties as well as surface wettability. Graphical abstract
      PubDate: 2021-09-02
      DOI: 10.1007/s00396-021-04883-w
       
 
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