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PEG-g-poly(aspartamide-co-N,N-dimethylethylenediamino aspartamide):Synthesis,characterization and its application as a drug delivery system

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Progress in Natural science:materials International 2009年第10期19卷 1305-1310页

作者： dong yang,xiaohong zhang,li yuan,jianhua hu key laboratory of molecular engineering of polymers(Ministry of Education),laboratory of advanced materials,department of macromolecular science,fudan university,shanghai 200433,china key laboratory of molecular engineering of polymers (Ministry of Education) Laboratory of Advanced Materials Department of Macromolecular Science Fudan University Shanghai 200433 China

PEG-g-poly(aspartamide-co-N,N-dimethylethylenediamino aspartamide)(PEG-DMEDA-PASP) was synthesized by two-step ring-opening reactions of polysuccinimide(PSI) with a-methoxy-x-amino-poly(ethylene glycol) and N,*** polymer structure was confirmed by 1H NMR and *** resultant PEG-DMEDA-PASP with ammonium glycyrrhizinate(AMG) could form polymeric micelles in aqueous *** results of transmission electron microscopy(TEM) and dynamic light scattering(DLS) measurements revealed that these polymeric micelles were spherical particles with a narrow diameter distribution and that their average diameter was ca.70 *** polymeric micelles had high-loading capacity(58%) and encapsulation efficiency(70%) for *** results of in vitro release experiments showed that these polymeric micelles possessed sustained-release effects,with a release rate of 25% within 3 h and 90% within 24 h.

关键词： PEG-g-poly(aspartamide-co-N,N-dimethylethylenediamino aspartamide) Polymeric micelle Drug delivery system Ammonium glycyrrhizinate

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Preparation of water-soluble multi-walled carbon nanotubes by Ce(IV)-induced redox radical polymerization

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Progress in Natural science:materials International 2009年第8期19卷 991-996页

作者： dong yang, xiaohong zhang, Changchun Wang, Yuechao Tang, Junjun li, jianhua hu key laboratory of molecular engineering of polymers (Ministry of Education) and department of macromolecular science, fudan university, shanghai 200433, china key laboratory of molecular engineering of polymers (Ministry of Education) and department of macromolecular science Fudan University Shanghai 200433 China

Poly(acrylic acid), poly(N-isopropylacrylamide) and polyacrylamide functionalized MWNTs were prepared by Ce(IV)-induced redox radical polymerization. The reaction can be conducted in aqueous media at room temperature, and the polymer graft ratio increased with the increase of monomer feed ratio. MWNTs anchored with PAA on the surface are pH sensitive and exhibit a reversible assembly–deassembly response in aqueous solution, whereas those coated with PNIPAM are thermally sensitive. All the polymer-functionalized MWNTs are highly soluble in water to give robust stable black solutions. Such water-soluble MWNTs are promising for biological and biomedical applications.

关键词： Carbon nanotube Redox polymerization Water solubility Stimuli response

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Three-dimensionally ordered, ultrathin graphitic-carbon frameworks with cage-like mesoporosity for highly stable li-S batteries

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Nano Research 2017年第7期10卷 2495-2507页

作者： huijuan Yu Hanwen li Shouyi yuan Yuchi yang Jiahui Zheng jianhua hu dong yang YonggangWang Angang dong Collaborative Innovation Center of Chemistry for Energy materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Department of Chemistry Fudan University Shanghai 200433 China State key laboratory of molecular engineering of polymers and department of macromolecular science Fudan University Shanghai 200433 China

Mesoporous carbons have been widely utilized as the sulfur host for lithium-sulfur （li-S） batteries. The ability to engineer the porosity, wall thickness, and graphitization degree of the carbon host is essential for addressing issues that hamper commercialization of li-S batteries, such as fast capacity decay and poor high-rate performance. In this work, highly ordered, ultrathin mesoporous graphitic-carbon frameworks （MGFs） having unique cage-like mesoporosity, derived from self-assembled Fe304 nanoparticle superlattices, are demonstrated to be an excellent host for encapsulating sulfur. The resulting S@MGFs exhibit high specific capacity （1,446 mAh.g-1 at 0.15 C）, good rate capability （430 mAh.g-1 at 6 C）, and exceptional cycling stability （-0.049% capacity decay per cycle at 1 C） when used as li-S cathodes. The superior electrochemical performance of the S@MGFs is attributed to the many unique and advantageous structural features of MGFs. In addition to the interconnected, ultrathin graphitic-carbon framework that ensures rapid electron and lithium-ion transport, the microporous openings between adjacent mesopores efficiently suppress the diffusion of polysulfides, leading to improved capacity retention even at high current densities.

关键词： self-assembly nanoparticles graphene frameworks cage-like mesoporosity li-S batteries

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酚氧基联烯基醚单体的原子转移自由基聚合研究

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化学学报 2009年第16期67卷 1897-1902页

作者：张晓鸿袁丽杨东胡建华陈晓枫王利聚合物分子工程教育部重点实验室复旦大学先进材料实验室复旦大学高分子科学系上海200433 复旦大学分析测试中心上海200433

以具有较高活性的酚氧基联烯基醚(POA)和对叔丁基酚氧基联烯基醚(t-BuPOA)为研究对象,研究了不同引发剂/配体体系对其原子转移自由基(ATRP)聚合行为的影响.发现在2-溴代丙酸甲酯/溴化亚铜/4,4'-二庚基联吡啶(2-MBP/CuBr/dHbpy)和对甲苯... 详细信息

以具有较高活性的酚氧基联烯基醚(POA)和对叔丁基酚氧基联烯基醚(t-BuPOA)为研究对象,研究了不同引发剂/配体体系对其原子转移自由基(ATRP)聚合行为的影响.发现在2-溴代丙酸甲酯/溴化亚铜/4,4'-二庚基联吡啶(2-MBP/CuBr/dHbpy)和对甲苯磺酰氯/溴化亚铜/三-(N,N-二甲基氨基乙基)胺(p-TsCl/CuBr/Me6TREN)两种ATRP反应体系中,POA的聚合都遵循ATRP反应的机理.

关键词：酚氧基联烯基醚原子转移自由基聚合可控自由基聚合

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