Raman dispersion models in conjugated polymers

Química Nova

Millen, Ricardo P.¹  Temperini, Marcia L.A.¹  Faria, Dalva Lúcia A. de¹  Universidade de São Paulo, São Paulo¹ 

关键词: vibrational spectroscopy;    conjugated polymers;    Raman dispersion.;   

DOI  :  10.1590/S0100-40422005000200021

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Raman dispersion refers to the dependence of the position of Raman bands on the energy of the exciting radiation. In this work, the three main models currently used to explain this phenomenon (Conjugated Length Model, Amplitude Mode Model and Effective Conjugation Coordinate Model) are discussed. Raman dispersion is a consequence of p electron delocalization, but each model describes in a different way how p electron delocalization affects the position of Raman bands. Here the features, qualities and problems of the three models are highlighted.

【 授权许可】

Unknown