The characteristic polynomial associated with pi-electrons of conjugated molecules are discussed by using subgraphs derived from molecular graphs as a basis for their construction. A practical method has been developed for evaluating the coefficient a(K) of conjugated molecules. Applying this method, the general formulas of evaluating the coefficient a(K) for homologous conjugated molecules have been obtained. The approach is illustrated on a few simple conjugated systems, including also a few polymeric systems. (C) 1996 John Wiley & Sons, Inc. [References: 10]
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机译：通过使用从分子图获得的子图作为构造它们的基础，讨论了与共轭分子的π电子相关的特征多项式。已经开发出一种实用的方法来评估共轭分子的系数a（K）。应用该方法，获得了评价同源共轭分子的系数a（K）的通式。在一些简单的共轭体系（包括一些聚合物体系）上说明了该方法。 （C）1996 John Wiley＆Sons，Inc. [参考：10]
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