摘要
综述有机物呈色的微观机理，全部由σ键形成的有机物如烷烃，是无色的π→π跃迁形式是有机物呈现颜色的主要原因。讨论了影响有机物颜色的重要因素：共轭体系增长、有机物离子化、有机物的空间位阻效应。溶剂对颜色的影响是极性溶剂有利于激发态的稳定性，可以降低△Ｅ，产生深色效应。
Abstract Microcosmic mechanism of organic substances of being colored was summarized. Or-ganic substances constituted wholly by σ bonds, for example,alkane,are colorless,Atran-sition from,π to,π is principal cause that organic substances present colors.A few importantprinciples which influence the colors of organic substances were described,as increase ofconjugated system, organic ionization, effect of spatial position obstruction,etc. Solvent hasinfluenced colors. Polar solvent is contributory to the stability of excited state,and it canlower △E and cause a deep color effect.SUBJECT TERMS:color,conjugated system,excited energy,a transition from π to π·,organic substance,effect of spatial position obstruction
出处
《大庆石油学院学报》
CAS
北大核心
1995年第1期47-50,共4页
Journal of Daqing Petroleum Institute
