采用微波法成功地合成含咔唑聚膦腈接枝偶氮硝基苯,通过UV-Vis、IR、1 H NMR等手段分析了产物的结构并对光电导性质进行了测试。研究表明,微波功率为400W,反应时间为6min,此时产物的产率最高为78.1%(质量分数)。光电导率随着施加电场强...采用微波法成功地合成含咔唑聚膦腈接枝偶氮硝基苯,通过UV-Vis、IR、1 H NMR等手段分析了产物的结构并对光电导性质进行了测试。研究表明,微波功率为400W,反应时间为6min,此时产物的产率最高为78.1%(质量分数)。光电导率随着施加电场强度、光强密度和偶氮生色团含量的增加而增强。为制备新型光电材料奠定了基础。展开更多
A new multifunctional mPEG-b-PAA-grafted chitosan copolymer possessing amino and carboxyl groups,mPEG-b-PAA-g-CHI(compound 6) ,was designed for a potential application in gene/drug delivery and synthesized by the meth...A new multifunctional mPEG-b-PAA-grafted chitosan copolymer possessing amino and carboxyl groups,mPEG-b-PAA-g-CHI(compound 6) ,was designed for a potential application in gene/drug delivery and synthesized by the methods of reversible addition-fragmentation chain transfer(RAFT) polymerization of acrylic acid(AA) and grafting reaction of a biodegradable chitosan(CHI) derivative.Completion of the reactions and characterization of the resulting compounds were demonstrated by 1 H NMR,FTIR and gel permeation chtomatography(GPC) studies.The results show that the molar ratio of amino groups to carboxyl groups in the copolymer(compound 6) is 0.41-0.59.展开更多
文摘采用微波法成功地合成含咔唑聚膦腈接枝偶氮硝基苯,通过UV-Vis、IR、1 H NMR等手段分析了产物的结构并对光电导性质进行了测试。研究表明,微波功率为400W,反应时间为6min,此时产物的产率最高为78.1%(质量分数)。光电导率随着施加电场强度、光强密度和偶氮生色团含量的增加而增强。为制备新型光电材料奠定了基础。
基金Project(20704011) supported by the National Natural Science Foundation of ChinaProject(09JJ3027) supported by the Natural Science Foundation of Hunan Province,ChinaProject(50725825) supported by the National Science Foundation for Distinguished Young Scholars
文摘A new multifunctional mPEG-b-PAA-grafted chitosan copolymer possessing amino and carboxyl groups,mPEG-b-PAA-g-CHI(compound 6) ,was designed for a potential application in gene/drug delivery and synthesized by the methods of reversible addition-fragmentation chain transfer(RAFT) polymerization of acrylic acid(AA) and grafting reaction of a biodegradable chitosan(CHI) derivative.Completion of the reactions and characterization of the resulting compounds were demonstrated by 1 H NMR,FTIR and gel permeation chtomatography(GPC) studies.The results show that the molar ratio of amino groups to carboxyl groups in the copolymer(compound 6) is 0.41-0.59.