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An encouraging recyclable synergistic hydrogen bond crosslinked highperformance polymer with visual detection of tensile strength
We have successfully constructed a novel type of recyclable crosslinked protonated polybenzotriazole ether sulfone (PBTSH+), which possessed outstanding thermal stability and mechanical properties. More importantly, the tensile strength of the resulting crosslinked films could be visually detected by taking advantage of the transparency decreasing effect of synergistic hydrogen bonds between pro...
http://www.polymer.cnt//ss/changguanjun/publicationsshow_13360.html |
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[Chin. Chem. Lett.] Polymer brushes on hydrogen-terminated silicon substrates via stable Si-C bond
We demonstrate a straightforward and efficient method for the creation of polymer brushes on hydrogen-terminated silicon substrates through the UV-induced photopolymerization. The surface grafting polymerization is applicable to a series of monomers, allowing the direct formation of homogeneous polymer coatings ranging from hydrophilic poly(2-isopropenyl-2-oxazoline) (PIPOx), amphiphilic poly( N -...
http://www.polymer.cnt//ss/zhang_ning/publicationsshow_12578.html |
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The Competitive O?H versus C?H bond activation of ethanol and methanol by VO2+ in gas-phase: A DFT study
The activation of ethanol and methanol by VO2(+) in gas phase has been theoretically investigated by using density functional theory (DFT). For the VO2(+)/ethanol system, the activation energy (ΔE) is found to follow the order of ΔE(C(β)-H) < ΔE(C(α)-H) ≈ ΔE(O-H). Loss of methyl and glycol occurs respectively via O-H and C(β)-H activation, while acetaldehyde elimination proceeds throu...
http://www.polymer.cnt//ss/luxiaoqing/publicationsshow_10218.html |
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Dynamic layer-by-layer films linked with Schiff base bond for sustained drug release
Dynamic layer-by-layer films were fabricated from a dextran-doxorubicin conjugate, PO-Dex-DOX, and glycol chitosan (GC), via the in situ Schiff base reaction between the aldehyde groups on PO-Dex-DOX and the amino groups on GC. Because of the reversible, dynamic nature of Schiff base bonds in the films, the films disintegrate gradually when soaked in aqueous solutions, and thus release DOX into ...
http://www.polymer.cnt//ss/zhangyongjun/publicationsshow_10097.html |
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[Chem. Commun] Fabrication of rhythmical assembly system based on reversible formation of dynamic covalent bond in a pH oscillator
Fabrication of rhythmical assembly system based on reversible formation of dynamic covalent bond in a pH oscillator
http://www.polymer.cnt//ss/zhouhongwei/publicationsshow_10060.html |
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Hydrogen bond cross-linked sulfonated poly(imino ether ether ketone) (PIEEK) for fuel cell membranes
A new diamine monomer, 3,30-dihydroxydiphenylamine, is prepared by the palladium catalyzed CeN coupling reaction and the following reduction reaction of 3-bromoanisole and m-anisidine. A series of novel hydrogen bond cross-linked sulfonated poly(imino ether ether ketone) (SPIEEK) are obtained by the copolymerization of sodium 5,50-carbonylbis(2-fluorobenzene sulfonate), 4,40-difluorobenzophenone...
http://www.polymer.cnt//ss/changguanjun/publicationsshow_9974.html |
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Construction of coumarin-based cross-linked micelles with pH responsive hydrazone bond and tumor targeting moiety
Construction of coumarin-based cross-linked micelles with pH responsive hydrazone bond and tumor targeting moiety
http://www.polymer.cnt//ss/gaohui/publicationsshow_9902.html |
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Langmuir, 29, 12176–12182: Single-Chain Mechanics of Poly(N,N-diethylacrylamide) and Poly(N-isopropylacrylamide): Comparative Study Reveals the Effect of Hydrogen Bond Donors
The
single-chain mechanics of two similar thermosensitive polymers, poly(N,N-diethyl-acrylamide) (PDEAM) and poly(N-isopropyl-acrylamide) (PNIPAM), have been studied by atomic
force microscopy-based single-molecule
force spectroscopy (SMFS). In a typical nonpolar organic
solvent, octane, both the two polymers show the same
inherent elasticity, although they have different substitutional groups. ...
http://www.polymer.cnt//ss/cuishuxun/publicationsshow_8208.html |
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Tuning luminescence behaviors of a chloroplatinum(II) complex by component exchanges of dynamic acylhydrazone bond
A cationic chloroplatinum(II) complex was found to show remarkable luminescence enhancement upon self-assembly with tripodal dynamic acylhydrazone-bridged sulfonates in water. The successive exchange reactions with acylhydrazine or aldehyde resulted in a controllable decrease in the luminescence intensities.
http://www.polymer.cnt//ss/buwf/publicationsshow_8195.html |
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[Chem. Eur. J.] Chemoselective Phototransformation of C-H Bond on Polymer Surface via a Novel Photoinduced Cerium Recycling Redox
It is
generally accepted that Ce4+ is unable to directly oxidize inert
alkyl C-H bond without the assistance of adjacent polar groups. Herein we
demonstrated in our newly developed confined photochemical reaction system,
this recognition might be challenged. As we found, when a thin layer of CeCl3/HCl
aqueous solution was applied onto polymeric substrate, and under UV
irradiation, Ce3+ was firstly...
http://www.polymer.cnt//ss/yangpeng/publicationsshow_7165.html |
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