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Highly Efficient and Thermal Robust Cobalt Complexes for 1,3-Butadiene Polymerization
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摘要:A family of highly bulky bis(salicylaldiminate) Co(II) complexes bearing cavity-like conformations are disclosed herein. Due to their unique bulky nature around the cobalt atoms that are reflected from space-filling models and the buried volume percentages, obviously longer bond distances of Co―N and Co―O are revealed from those complexes. Moreover, because of these well-protected active species, the cobalt complexes are able to catalyze 1,3-butadiene polymerization in high yields at extreme low catalyst concentrations, revealing a ultra high catalytic efficiency. At a ratio of 50000, all the complexes can afford polybutadiene with yields higher than 90%. Furthermore, the highly steric bulkiness of the ligand can also significantly enhance the thermostability of the active species. At temperature of 80-120 °C, the complexes are able to successfully maintain high activities, giving polymer yields up to 90%.
卷号:v.40
期号:11
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张春雨

教授 博士生导师 硕士生导师

教师拼音名称:zhangchunyu

出生日期:1978-11-30

电子邮箱:

入职时间:2019-11-28

所在单位:先进橡胶材料教育部重点实验室

学历:博士研究生

办公地点:国家大学科技园北楼702 CCF大楼1517室

性别:男

联系方式:13844852208

学位:理学博士

毕业院校:吉林大学

所属院系:先进橡胶材料教育部重点实验室

学科:材料科学与工程其他专业
高分子化学与物理

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