作者:Timothy J. Deming、Bruce M. Novak
DOI:10.1021/ja00073a028
日期:1993.10
polymerizations have been examined experimentally. Chain initiation has been studied by [sup 13]C [sup 1]H NMR at low temperature using a living polymerization system. Chain propagation has been examined by cyclic voltammetry, ESR spectroscopy, magnetic susceptibility measurements, temperature dependent kinetic studies, and substituent effect analysis. The chain-propagation studies were performed on both living and
镍介导的异氰化物聚合的所有机制方面都已通过实验进行了检查。已使用活性聚合系统在低温下通过 [sup 13] C [sup 1] H NMR 研究了链引发。链传播已通过循环伏安法、ESR 光谱、磁化率测量、温度相关动力学研究和取代基效应分析进行了检查。链传播研究在活性和经典的非均相系统上进行,发现对于所用镍引发剂的类型是不变的。最后,通过核磁共振、动力学研究、取代基效应分析和化学研究来研究链转移反应。综合机理方案已从实验数据中推导出来,并作为最可能的反应途径提出。39 参考,