Terminal defined chain-growth polycondensation of 4-chloropyridine
摘要:
This work examines the polycondensation of 4-chloropyridine derivatives using an N-(4-tert-butylbenzyl)-4-chloropyridinium (BPymCl) initiator and ion exchange reagents NaBPh4, NaBF4, and TBABF(4). The H-1 NMR spectra demonstrate that the product quantity is proportional to the total conversion of the monomer and the initiator. The MALDI-TOF MS spectrum shows that the product contains more than 9 monomer units. The polymerization was well-terminated via the addition of dimethylaminopyridine. These results indicate that the polycondensation proceeds in a chain-growth manner. This polycondensation could be a new example of a controlled polymerization with a well-defined end group. (C) 2014 Elsevier Ltd. All rights reserved.
Terminal defined chain-growth polycondensation of 4-chloropyridine
摘要:
This work examines the polycondensation of 4-chloropyridine derivatives using an N-(4-tert-butylbenzyl)-4-chloropyridinium (BPymCl) initiator and ion exchange reagents NaBPh4, NaBF4, and TBABF(4). The H-1 NMR spectra demonstrate that the product quantity is proportional to the total conversion of the monomer and the initiator. The MALDI-TOF MS spectrum shows that the product contains more than 9 monomer units. The polymerization was well-terminated via the addition of dimethylaminopyridine. These results indicate that the polycondensation proceeds in a chain-growth manner. This polycondensation could be a new example of a controlled polymerization with a well-defined end group. (C) 2014 Elsevier Ltd. All rights reserved.
A production method for polypyridinium having a narrow molecular weight distribution and a desired molecular weight is provided.
Polypyridinium 3 having a narrow molecular weight distribution and a desired molecular weight is synthesized by allowing a pyridine derivative monomer 2 to polymerize on a polymerization initiator 1 such as a specially designed 4-halopyridinium and the like in the presence of a dissolution accelerating agent, such as tetrabutyl ammonium tetrafluoroborate, that dissolves the polymer formed in a solvent as in the chemical below.
where Y represents an anion that dissolves in an organic solvent, X and Z represent halogen atoms, R represents hydrocarbon groups and the like and o is about 1 to 300.
本发明提供了一种具有窄分子量分布和所需分子量的聚吡啶鎓的生产方法。
具有窄分子量分布和所需分子量的聚吡啶鎓 3 是通过让吡啶衍生物单体 2 在聚合引发剂 1(如专门设计的 4-卤代吡啶鎓等)上聚合,并在溶解加速剂(如四氟硼酸四丁基铵)的存在下合成的,溶解加速剂可将所形成的聚合物溶解在溶剂中,如下化学式所示。
其中 Y 代表能溶于有机溶剂的阴离子,X 和 Z 代表卤素原子,R 代表烃基等,o 约为 1 至 300。
Method for Producing Polypyridinium
申请人:Iyoda Tomokazu
公开号:US20080132676A1
公开(公告)日:2008-06-05
A production method for polypyridinium having a narrow molecular weight distribution and a desired molecular weight is provided. Polypyridinium 3 having a narrow molecular weight distribution and a desired molecular weight is synthesized by allowing a pyridine derivative monomer 2 to polymerize on a polymerization initiator 1 such as a specially designed 4-halopyridinium and the like in the presence of a dissolution accelerating agent, such as tetrabutyl ammonium tetrafluoroborate, that dissolves the polymer formed in a solvent as in the chemical below.
where Y represents an anion that dissolves in an organic solvent, X and Z represent halogen atoms, R represents hydrocarbon groups and the like and o is about 1 to 300.
US7985829B2
申请人:——
公开号:US7985829B2
公开(公告)日:2011-07-26
Terminal defined chain-growth polycondensation of 4-chloropyridine
作者:Keiji Nose、Tomokazu Iyoda、Takanobu Sanji
DOI:10.1016/j.polymer.2014.05.052
日期:2014.8
This work examines the polycondensation of 4-chloropyridine derivatives using an N-(4-tert-butylbenzyl)-4-chloropyridinium (BPymCl) initiator and ion exchange reagents NaBPh4, NaBF4, and TBABF(4). The H-1 NMR spectra demonstrate that the product quantity is proportional to the total conversion of the monomer and the initiator. The MALDI-TOF MS spectrum shows that the product contains more than 9 monomer units. The polymerization was well-terminated via the addition of dimethylaminopyridine. These results indicate that the polycondensation proceeds in a chain-growth manner. This polycondensation could be a new example of a controlled polymerization with a well-defined end group. (C) 2014 Elsevier Ltd. All rights reserved.