Bulk Acyclic Diene Metathesis Polycondensation
Bulk Acyclic Diene Metathesis Polycondensation
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DOI：
10.1002/macp.201900223
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发表时间：
2019-08-01
影响因子：
2.5
通讯作者：
Wagener, Kenneth B.
中科院分区：
文献类型：
--
作者：
Bell, Michael;Hester, Holley Grace;Wagener, Kenneth B.
体积无环二烯复分解（ADMET）聚合在熔体中进行，温度高达175℃，使用环（烷基）（氨基）碳（CAAC）钌基Grubbs催化剂完成。在远高于常规ADMET化学的温度下，研究了高温稳定性，从而获得了任何ADMET聚合物的最高平均分子量。用CAAC催化剂对一种小分子模型化合物的自复分解进行了异构化倾向（双键迁移）的研究。使用适当的催化剂比例和温度，可以观察到最小的烯烃异构化。
Bulk acyclic diene metathesis (ADMET) polymerization performed in the melt at temperatures up to 175 degrees C is completed using a cyclic (alkyl)(amino) carbene (CAAC) ruthenium-based Grubbs catalyst. High temperature stability is investigated at temperatures well above conventional ADMET chemistry, leading to the highest weight-average molecular weights ever achieved for any ADMET polymer. A study of isomerization tendency (double bond migration) is done via self-metathesis of a small molecule model compound using CAAC catalysts. Minimal olefin isomerization is observed using appropriate catalyst ratios and temperatures.