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Science China Chemistry 2018年第1期61卷 71-75页

作者： Pengfei Sun Sichao Tian Mingchang Lin Guosong Chen Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing University of Posts & Telecommunications The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan University

This work investigated the effect of glyco-regioisomerism of glycopolymers on their dynamic interaction with benzoxaborole-containing polymers. Two kinds of glycopolymers, P-1-Gal and P-6-Gal, i.e. galactoside pendant group linked to the identical main chain through its anomeric(C1) and C6-hydroxyl group position, respectively, were studied. We found that P-6-Gal showed stronger binding strength to the PNIPAM-co-PBOB polymer than P-1-Gal did, which controlled the macroscopic property of the resultant hydrogels at a molecular level.

关键词： glyco-regioisomerism benzoxaborole glycopolymers hydrogel glucose

One-pot synthesis of hyperbranched poly(amido amine) clicked with a sugar shell via Michael addition polymerization and thiol click reaction

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Science China Chemistry 2010年第8期53卷 1663-1668页

作者： YU ZhiQiang,CUI MengMeng,YAN JunJie & YOU YeZi CAS Key Lab of Soft Matter Chemistry Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China CAS Key Lab of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei China

This paper reports the production of glycopolymers via a simple and flexible method.A novel glycopolymer with a hyperbranched poly(amido amine) core and a sugar shell (HPAA-GLc) was synthesized by using thiol-ene click reaction via facile one-pot *** poly(amido amine) with vinyl terminals was first synthesized by Michael addition polymerization of N,N'-methylene bisacrylamide (MBA) with 1-(2-aminoethyl) piperazine (AEPZ).Subsequently,thiol-ene click reaction between vinyl units of hyperbranched poly(amido amine) and thio-glucose was performed in *** on the NMR result,all the vinyl groups reacted with thiol-glucose in 120 *** photoluminescence emission was observed from the aqueous solution of HPAA-GLc.

关键词： thiol-ene click reaction glycopolymers hyperbranched poly(amido amine) photoluminescence

Mucin-like glycopolymer gels in electrosensory tissues generate cues which direct electrolocation in amphibians and neuronal activation in mammals

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Neural Regeneration Research 2019年第7期14卷 1191-1195页

作者： James Melrose Raymond Purves Bone and Joint Research Laboratory Kolling InstituteNorthern Sydney Local Health District Graduate School of Biomedical Engineering University of New South Wales Sydney Medical School NorthernThe University of Sydney Faculty of Medicine and Health University of SydneyRoyal North Shore Hospital

Mucin-like glycoproteins have established roles in epithelial boundary protection and lubricative roles in some *** mini-review illustrates alternative functional roles which rely on keratan sulphate and sialic acid modifications to mucin glycopolymers which convey charge properties suggestive of novel electroconductive properties not previously ascribed to these *** tumour cells express mucin-like glycopolymers modified with highly sulphated keratan sulphate and sialic which can be detected using diagnostic *** mucin-like keratan sulphate glycopolymer present in the ampullae of lorenzini is a remarkable sensory polymer which elasmobranch fish(sharks,rays,skate) use to detect weak electrical fields emitted through muscular activity of prey *** on the proton gradients is conveyed to neuromast cells located at the base of the ampullae and mechanotransduced to neural *** ampullae keratan sulphate sensory gel is the most sensitive proton gradient detection polymer known in *** process is known as electrolocation,and allows the visualization of prey fish under conditions of low *** bony fish have similar electroreceptors located along their lateral lines which consist of neuromast cells containing sensory hairs located within a cupula which contains a sensory gel polymer which detects distortions in fluid flow in channels within the lateral lines and signals are sent back to neural networks providing information on the environment around these *** species of dolphin,the Guiana dolphin,has electrosensory pits in its bill with similar roles to the ampullae but which have evolved from its vibrissal *** two terrestrial animals can undertake electrolocation,these are the Duck-billed platypus and long and short nosed *** this case the electrosensor is a highly evolved innervated mucous *** platypus has 40,000 electroreceptors around its bill through which it electrolocates food sp

关键词： mucin glycopolymers keratan sulfate electrolocation monosulphated keratan sulfate neuroregulation glycosaminoglycan neurosensory hair cells neurosensory proteoglycan

Carboxymethyl glycoside lactone(CMGL) synthons:Scope of the method and preliminary results on step growth polymerization of α-azide-ω-alkyne glycomonomers

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Science China Chemistry 2010年第9期53卷 1880-1887页

作者： CHAMBERT Stéphane BERNARD Julien FLEURY Etienne QUENEAU Yves INSA-Lyon Laboratoire de Chimie Organique et Bioorganique Bat.J.Verne 20 Avenue A.Einstein69621 Villeurbanne CedexFrance ICBMS Institut de Chimie et de Biochimie Moléculaires et SupramoléculairesUMR5246 CNRS université de Lyon université Lyon 1 INSA-Lyon CPE-Lyon Bat.Curien 43 Bd du 11 Novembre 1918F 69622 VilleurbanneFrance INSA-LYON IMP1ngénierie des Matériaux Polymères UMR5223 université de Lyon université Claude Bernard Lyon 1F-69621 Villeurbanne CedexFrance

Carboxymethyl glycoside lactones(CMGLs) are bicyclic synthons which open readily for accessing new types of pseudo-glycoconjugates,such as sugar-amino acid hybrids,neoglycolipids,pseudodisaccharides,and membrane imaging *** lactone opening,free OH-2 is available for further functionalization,leading to 1,2-bisfunctionalized *** strategy is illustrated herein with new polymerizable systems of the AB type bearing both azide and alkyne functions prepared from α or β gluco-CMGL *** the reaction of lactones with propargylamine,an azido group was introduced by two different sequences leading to either the 2-manno-azido or the 6-gluco-azido *** capability of these AB monomers to undergo step growth polymerization through copper(I) catalyzed alkyne-azide cycloaddition(CuAAC) and generate glycopolytriazoles was evidenced.

关键词： carbohydrates glycopolymers lactones click chemistry step growth polymerization glycoconjugates azides alkynes Huisgen cycloaddition

Tethering of Homo and Block Glycopolymer Chains onto Montmorillonite Surface by Atom Transfer Radical Polymerization

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Open Journal of Organic Polymer Materials 2012年第4期2卷 80-88页

作者： Amal Amin Heba Kandil Ahmed Ramadan Mohamed Nader Ismail Chemistry Department Faculty of Science Helwan University Cairo Egypt Polymers & Pigments Department National Research Center Giza Egypt

Well-defined homo glycopolymer/montmorillonite (MMT) nanocomposite (gly1) was prepared successfully by the “grafting from” technique from the modified surface of MMT via surface initiated atom transfer radical polymerization (SI-ATRP) of 3-O-methacryloyl-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose (gly) in the presence of Cu(I)Br/ bi- pyridyl at 90?C in xylene. Well-defined diblock copolymers (gly2, gly3, gly4 and gly5) were also synthesized via the same technique by using comonomers of methylmethacrylate (MMA) or styrene (St) with glycomonomer (gly) using the same catalytic system. The formed nanocomposites showed both intercalated and exfoliated structures, as judged by XRD and TEM measurements. Further analyses were performed on such nanocomposites to confirm their formation such as TGA and DSC. The structures of the attached polymers to MMT were characterized by 1H NMR.

关键词： glycopolymers Polymer/Layered Silicates Nanocomposites SI-ATRP Montmorillonite