Metal-size influence in isoselective 2-vinylpyridine polymerization
Metal-size influence in isoselective 2-vinylpyridine polymerization
复制标题
金属尺寸对同选择性 2-乙烯基吡啶聚合的影响
DOI:
10.1016/j.poly.2019.03.011
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发表时间:
2019-06
期刊:
影响因子:
2.6
通讯作者:
Li Chang-Hong
中科院分区:
文献类型:
--
作者:
Xu Tie-Qi;Yu Zhi-Qi;Li Chang-Hong
Eight new organometallic complexes were obtained by the reaction of trialkyl rare earth complexes Ln(CH2SiMe3)3(THF)2(Ln = Y, Lu, Ho, Dy) with tetradentate phenol ether ligands. Among them the structure of complex7with Lu was confirmed by single crystal X-ray diffraction. These complexes exhibited moderate to high activity for 2-VP polymerization at ambient temperature in toluene. Complex5showed the highest catalytic activity, with a turnover frequency of 1714 h−1. Significantly, the 2-VP polymerization is also stereospecific, producing isotactic poly(2-VP) with an isotacticity ofmm= 0.44–0.99. The catalytic experimental results indicate that the size of metal atom obviously influences the stereoregularity of the growing polymer chain, and catalysts with Ho atom exhibit better isotactic selectivity than other metal catalysts.
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影响因子:
--
作者:
Xin Xu;Yao-Quan Chen;Jie Sun
通讯作者:
Xin Xu;Yao-Quan Chen;Jie Sun
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
影响因子:
62.1
作者:
Melanie Zimmermann;R. Anwander
通讯作者:
Melanie Zimmermann;R. Anwander
影响因子:
3.4
作者:
G. Natta;G. Mazzanti;P. Longi;G. Dall'asta;F. Bernardini
通讯作者:
G. Natta;G. Mazzanti;P. Longi;G. Dall'asta;F. Bernardini
影响因子:
2.3
作者:
Benjamin D. Ward;Lenka Lukešová;H. Wadepohl;S. Bellemin‐Laponnaz;L. Gade
通讯作者:
Benjamin D. Ward;Lenka Lukešová;H. Wadepohl;S. Bellemin‐Laponnaz;L. Gade