Polymerization of N-Substituted Glycine N-Thiocarboxyanhydride through Regioselective Initiation of Cysteamine: A Direct Way toward Thiol-Capped Polypeptoids
Polymerization of N-Substituted Glycine N-Thiocarboxyanhydride through Regioselective Initiation of Cysteamine: A Direct Way toward Thiol-Capped Polypeptoids
复制标题
通过半胱胺区域选择性引发 N-取代甘氨酸 N-硫代羧酸酐的聚合:生成硫醇封端多肽的直接方法
DOI:
10.1021/acs.macromol.8b00259
复制
发表时间:
2018-06
期刊:
影响因子:
5.5
通讯作者:
Ling Jun
中科院分区:
文献类型:
--
作者:
Tao Xinfeng;Zheng Botuo;Bai Tianwen;Li Min-Hui;Ling Jun
Because of the high reactivity, N-carboxyanhydride (NCA) can be initiated by the thiol group. On the contrary, N-thiocarboxyanhydride (NTA) is more stable and is able to tolerate it. Herein, we apply cysteamine as a regioselective initiator for ring-opening polymerization (ROP) of N-substituted glycine N-thiocarboxyanhydride (NNTA) to synthesize well-defined thiol-capped polypeptoids. ROPs of sarcosine NTA (Sar-NTA) and N-ethylglycine NTA (NEG-NTA) are well controlled when [M]/[I] ≤ 100 with high yields (>87.5%) producing polypeptoids with designable molecular weights and low polydispersity indices (<1.2). All the polypeptoid chains contain a thiol end group, which is confirmed by NMR analyses, MALDI-ToF MS spectra, and Ellman’s assay. Through radical-mediated thiol–ene reaction with styrene, all the thiol chain ends are transferred to oligostyrene, revealing the convenience of further modification. Benefiting from the thiol–ene click chemistry, thiol-capped polysarcosine (PSar) and poly(N-ethylglycine) (...
登录
查看更多内容
影响因子:
5.5
作者:
Li, Ang;Lu, Lu;Zhang, Donghui
通讯作者:
Zhang, Donghui
影响因子:
9.9
作者:
Chen, Ying;Xu, Zhengqing;Ling, Jun
通讯作者:
Ling, Jun
影响因子:
15
作者:
Wang Y;Lazor KM;DeMeester KE;Liang H;Heiss TK;Grimes CL
通讯作者:
Grimes CL
影响因子:
16.6
作者:
Postma, Sjoerd G. J.;Vialshin, Ilia N.;Huck, Wilhelm T. S.
通讯作者:
Huck, Wilhelm T. S.
DOI:
10.1021/la4009174
发表时间:
2013-06-11
期刊:
Langmuir : the ACS journal of surfaces and colloids
影响因子:
--
作者:
Schneider M;Fetsch C;Amin I;Jordan R;Luxenhofer R
通讯作者:
Luxenhofer R