Synthesis, characterization, glass transition behavior, and the electronic structure of high-molecular-weight, symmetrically substituted poly(ferrocenylsilanes) with alkyl or aryl side groups
Synthesis, characterization, glass transition behavior, and the electronic structure of high-molecular-weight, symmetrically substituted poly(ferrocenylsilanes) with alkyl or aryl side groups
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具有烷基或芳基侧基的高分子量、对称取代的聚（二茂铁基硅烷）的合成、表征、玻璃化转变行为和电子结构
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
I. Manners
中科院分区：
文献类型：
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作者：
D. Foucher;R. Ziembinski;B. Tang;P. Macdonald;J. Massey;C. Jaeger;G. Vancso;I. Manners
通过热开环聚合反应合成了一系列高分子量、对称取代的聚二茂铁基硅烷[Fe（η C5 H4）2（SiR 2）] n（2a-e：a，R=Me; B，R=Et; c，R=Bu; d，R=Her; e，R=Ph）.发现聚合物2 e不溶于普通有机溶剂。研究了2c在THF中的溶液行为，得到2c在20°C下的溶液绝对分子量Mw = 2.29 × 105，第二维里系数A2 = 1.3 × 10 - 4 molcm 2g-2.聚合物的Tg s随取代基的存在而变化，并且发现在-26 ° C（对于2d）至+33 ° C（对于2a）的范围内。对于所研究的聚合物样品，没有检测到熔融转变的证据
A series of high molecular weight, symmetrically substituted poly(ferrocenylsilanes) [Fe(η-C 5 H 4 ) 2 (SiR 2 )] n (2a-e: a, R=Me; b, R=Et; c, R=Bu; d, R=Her; e, R=Ph) have been prepared via the thermal ring-opening polymerization of the corresponding strained cyclic ferrocenylsilane monomers Fe(η-C 5 H 4 ) 2 (SiR 2 ). Polymer 2e was found to be insoluble in common organic solvents. The solution behavior of 2c was investigated and yielded an absolute value of M w = 2.29x10 5 and a second virial coefficient A 2 = 1.3x10 -4 mol cm 2 g -2 in THF at 20°C. T g s of the polymers varied with the substituents present and were found in the range of -26°C (for 2d) to +33°C (for 2a). No evidence for melting transitions was detected for the polymer samples studied