SYNTHESIS AND CHARACTERIZATION OF WELL-DEFINED BLOCK COPOLYMERS CONTAINING PENDANT,SELF-COMPLEMENTARY QUADRUPLE HYDROGEN BONDING SITES | |
Tang LM(唐黎明) ; Yu Cao | |
2010-05-13 ; 2010-05-13 | |
关键词 | Block polymer Controlled radical polymerization Nitroxide-mediated polymerization (NMP) Quadruple hydrogen bonding. O631.3 |
其他题名 | SYNTHESIS AND CHARACTERIZATION OF WELL-DEFINED BLOCK COPOLYMERS CONTAINING PENDANT,SELF-COMPLEMENTARY QUADRUPLE HYDROGEN BONDING SITES |
中文摘要 | <正>The title block copolymer (defined as PSUEA) containing pendant,self-complementary quadruple hydrogen bonding sites has been prepared successfully by three steps.First,poly(styrene-b-2-hydroxyethyl acrylate) (defined as PSHEA) was prepared by living radical polymerizing 2-hydroxyethyl acrylate (HEA) initiated by polystyrene (PSt) macro- initiator,which was prepared via nitroxide-mediated polymerization (NMP) technique.After treated by excessive 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (IPDI),PSHEA was transferred into an intermediate polymer (defined as PSIEA) with isocyanate groups in the second block.Finally,PSIEA was reacted with excessive 2-amino-4- hydroxy-6-methyl-pyrimidone (MIS) to obtain PSUEA beating pendant quadruple hydrogen bonding 2-ureido-4[IHl- pyrimidone (Upy) units.Based on ~1H-NMR,FT-IR and GPC analysis,all the polymers with well controlled structures were obtained.Preliminary thermal analysis of the block polymers indicated that the introduction of Upy units significantly increased the glass transition temperature.The possibility to form quadruple hydrogen bonding should make PSUEA suitable as new building component for supramolecular assembling.; The title block copolymer (defined as PSUEA) containing pendant,self-complementary quadruple hydrogen bonding sites has been prepared successfully by three steps.First,poly(styrene-b-2-hydroxyethyl acrylate) (defined as PSHEA) was prepared by living radical polymerizing 2-hydroxyethyl acrylate (HEA) initiated by polystyrene (PSt) macro- initiator,which was prepared via nitroxide-mediated polymerization (NMP) technique.After treated by excessive 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (IPDI),PSHEA was transferred into an intermediate polymer (defined as PSIEA) with isocyanate groups in the second block.Finally,PSIEA was reacted with excessive 2-amino-4- hydroxy-6-methyl-pyrimidone (MIS) to obtain PSUEA beating pendant quadruple hydrogen bonding 2-ureido-4[IHl- pyrimidone (Upy) units.Based on ~1H-NMR,FT-IR and GPC analysis,all the polymers with well controlled structures were obtained.Preliminary thermal analysis of the block polymers indicated that the introduction of Upy units significantly increased the glass transition temperature.The possibility to form quadruple hydrogen bonding should make PSUEA suitable as new building component for supramolecular assembling. |
语种 | 英语 ; 英语 |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/30355] ![]() |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | Tang LM,Yu Cao. SYNTHESIS AND CHARACTERIZATION OF WELL-DEFINED BLOCK COPOLYMERS CONTAINING PENDANT,SELF-COMPLEMENTARY QUADRUPLE HYDROGEN BONDING SITES[J],2010, 2010. |
APA | 唐黎明,&Yu Cao.(2010).SYNTHESIS AND CHARACTERIZATION OF WELL-DEFINED BLOCK COPOLYMERS CONTAINING PENDANT,SELF-COMPLEMENTARY QUADRUPLE HYDROGEN BONDING SITES.. |
MLA | 唐黎明,et al."SYNTHESIS AND CHARACTERIZATION OF WELL-DEFINED BLOCK COPOLYMERS CONTAINING PENDANT,SELF-COMPLEMENTARY QUADRUPLE HYDROGEN BONDING SITES".(2010). |
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