Synthesis and Stereospecific Polymerization of a Novel Bulky Styrene Derivative
Synthesis and Stereospecific Polymerization of a Novel Bulky Styrene Derivative
复制标题
新型大体积苯乙烯衍生物的合成和立体定向聚合
DOI：
10.1021/acs.macromol.6b00325
复制
发表时间：
2016-03
期刊：
影响因子：
5.5
通讯作者：
Wan, Xinhua
中科院分区：
文献类型：
--
作者：
Li, Xiaohong;Zhang, Jie;Cui, Dongmei;Wan, Xinhua
设计并合成了一种新型的乙烯基联苯单体2-甲氧基-5-苯基苯乙烯（MOPS），用于研究极性大体积苯乙烯类衍生物的立体定向聚合。无论其大的侧基和给电子的邻甲氧基取代基，该化合物显示出高的可聚合性，并容易通过自由基，阴离子和配位聚合转化为相应的聚合物具有中等至高分子量。通过1H/13 C NMR光谱、热分析和广角X-射线衍射的组合表征所得聚合物。由AIBN引发的自由基聚合在甲苯中在60 °C下产生了富含间同立构（rr = 0.37）的聚合物作为大多数庞大的乙烯基单体，而由n-BuLi诱导的阴离子聚合仅产生富含全同立构的聚合物，无论极性四氢呋喃（−78 °C，mm = 0.54）还是非极性甲苯（−40 °C，mm = 0.78）用作溶剂。阴离子聚合得到的富全同立构微结构。
A novel vinylbiphenyl monomer, 2-methoxy-5-phenylstyrene (MOPS), was designed and efficiently synthesized to investigate the stereospecific polymerization of bulky and polar styrenic derivative. Regardless of its large side group and electron-donating o-methoxy substituent, this compound showed a high polymerizability and was readily converted to the corresponding polymers with moderate to high molecular mass through radical, anionic, and coordination polymerizations. The resultant polymers were characterized by a combination of 1H/13C NMR spectrometry, thermal analysis, and wide-angle X-ray diffraction. Radical polymerization initiated by AIBN in toluene at 60 °C produced a syndiotactic-rich (rr = 0.37) polymer as most bulky vinyl monomers, whereas anionic polymerizations induced by n-BuLi yielded only isotactic-rich polymers no matter if polar tetrahydrofuran (−78 °C, mm = 0.54) or apolar toluene (−40 °C, mm = 0.78) was employed as the solvent. The isotactic-rich microstructure obtained by anionic polym...
登录
查看更多内容
DOI：
10.1039/b912813a
发表时间：
2009-10-07
期刊：
Chemical communications (Cambridge, England)
影响因子：
--
作者：
Kawasaki T;Hohberger C;Araki Y;Hatase K;Beckerle K;Okuda J;Soai K
通讯作者：
Soai K
DOI：
10.1016/b978-1-4831-9883-5.50004-0
发表时间：
1955-03
期刊：
Stereoregular Polymers and Stereospecific PolymerizationsThe Contributions of Giulio Natta and His School to Polymer Chemistry
影响因子：
--
作者：
G. Natta;P. Pino;P. Corradini;F. Danusso;E. Mantica;G. Mazzanti;G. Moraglio
通讯作者：
G. Natta;P. Pino;P. Corradini;F. Danusso;E. Mantica;G. Mazzanti;G. Moraglio
螺旋苯乙烯聚合物的手性和热致性质：非手性基团的影响
影响因子：
5.5
作者：
Bai, Jianwei;Zhang, Jie;Liu, Anhua;Wan, Xinhua
通讯作者：
Wan, Xinhua
影响因子：
5.5
作者：
O. Vogl;H. Miller;W. H. Sharkey
通讯作者：
O. Vogl;H. Miller;W. H. Sharkey
影响因子：
15
作者：
H. Terao;S. Ishii;M. Mitani;Hidetsugu Tanaka;T. Fujita
通讯作者：
H. Terao;S. Ishii;M. Mitani;Hidetsugu Tanaka;T. Fujita