Results 21 to 30 of about 267,561 (310)

Stabilization of colloidal palladium particles by a block copolymer of polystyrene and a block containing amide sidegroups [PDF]

open access: yes, 1996
A block copolymer of polystyrene and poly(tert-butylmethacrylate) was prepared by anionic polymerization. The ester groups of the poly(tert-butylmethacrylate) were hydrolyzed, after wich the remaining carboxyl groups were reacted with pyrrolidine.
Hempenius, M.   +3 more
core   +2 more sources

Indometacin loading and in vitro release properties from novel carbopol coated spherical mesoporous silica nanoparticles [PDF]

open access: yes, 2013
Spherical MCM-41 silica nanosized particles were synthesized and post synthesis modified by 3-aminopropyltriethoxysilane (APTES) in order to prepare amino-functionalized carrier.
Agnes Szegedi   +36 more
core   +1 more source

Clustering-Triggered Emission of Carboxymethylated Nanocellulose

open access: yesFrontiers in Chemistry, 2019
Non-conjugated polymers with luminescence emission property have recently drawn great attention due to their promising applications in different areas. Most traditional organic synthetic non-conjugated polymers required complicated synthesis.
Meng Li   +7 more
doaj   +1 more source

Crystal structure of poly[[[μ4-5-(9H-carbazol-9-yl)isophthalato][μ3-5-(9H-carbazol-9-yl)isophthalato]bis-(di-methyl-formamide)(methanol)dizinc] di-methyl-formamide monosolvate]. [PDF]

open access: yes, 2015
The structure of the polymeric title compound, {[Zn2(C20H11NO4)2(C3H7NO)2(CH3OH)]·C3H7NO} n , comprises carbazolylisophthalate moieties connecting dimetallic tetra-carboxyl-ate zinc secondary building units (SBUs) parallel to [100] and [010], leading to ...
Campana, Charles   +2 more
core   +4 more sources

Structure formation in sugar containing pectin gels – Influence of Ca2+ on the gelation of low-methoxylated pectin at acidic pH [PDF]

open access: yes, 2011
A new method for the examination of the pectin gelation process is presented as a complementation of the most common determination of the gelling point (cross-over of G′ and G″) from oscillation measurements.
Einhorn-Stoll, Ulrike   +2 more
core   +1 more source

An acidic-groups detection method and its application to analysis of Chinese humic acid samples.

open access: yesPLoS ONE, 2020
The method of non-aqueous conductivity titration (NACT) of organic weak acids was applied to quickly and accurately determine the phenolic-hydroxyl and carboxyl-groups contents in humic acid.
Pengfei Xu   +7 more
doaj   +1 more source

Computer-Assisted Design of Environmentally Friendly and Light-Stable Fluorescent Dyes for Textile Applications. [PDF]

open access: yes, 2019
Five potentially environmentally friendly and light-stable hemicyanine dyes were designed based on integrated consideration of photo, environmental, and computational chemistry as well as textile applications.
Chen, Guoqiang   +2 more
core   +1 more source

Preparation, Characterization of Carboxyl Polyaldehyde Sugars and Application as Innovative Anti-crease Finishing Agents for Cotton Fabric

open access: yesJournal of Natural Fibers, 2022
We have designed and prepared four new cellulose cross-linking agents using NaClO/NaBr/TEMPO and sodium periodate selective catalytic oxidation systems. First, the primary hydroxyl group of sucrose, trehalose, maltose, or lactose was carboxylated through
Jiangfei Lou, Dan Wang, Xuerong Fan
doaj   +1 more source

Benchmarking pKa prediction [PDF]

open access: yes, 2006
Background: pKa values are a measure of the protonation of ionizable groups in proteins. Ionizable groups are involved in intra-protein, protein-solvent and protein-ligand interactions as well as solubility, protein folding and catalytic activity.
Davies, M.N.   +3 more
core   +3 more sources

Functionalized polystyrene nanoparticles as a platform for studying bio–nano interactions

open access: yesBeilstein Journal of Nanotechnology, 2014
Nanoparticles of various shapes, sizes, and materials carrying different surface modifications have numerous technological and biomedical applications.
Cornelia Loos   +6 more
doaj   +1 more source

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