Modelos para dispersão Raman em polímeros conjugados

Química Nova

Ricardo P. Millen¹  Dalva Lúcia A. De Faria¹  Marcia L.a. Temperini¹ 

[1] ,Universidade de São Paulo Instituto de Química Departamento de Química FundamentalSão Paulo SP

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

DOI  :  10.1590/S0100-40422005000200021

来源: SciELO

【 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 pi electron delocalization, but each model describes in a different way how pi electron delocalization affects the position of Raman bands. Here the features, qualities and problems of the three models are highlighted.

【 授权许可】

CC BY-NC   
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