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Updated: Apr 6, 2026

Raman and IR Spectroelectrochemical Methods as Tools to Analyze Conjugated Organic Compounds
Published on: October 12, 2018
Vibrational Raman Shifts and Aromaticity: The Case of Oligothiophenes
Juan Casado1, Víctor Hernández1, Juan T López Navarrete2
1Departamento de Química Física, University of Málaga, Campus de Teatinos s/n, 29071, Málaga, Spain.
Abstract:
A general description of the use of the Raman spectra of polyconjugated molecules to infer their electronic and molecular properties and how these change in a number of situations is illustrated with several examples, with particular emphasis on oligothiophene molecules. The most noticeable features of the Raman spectra of these molecules and the main theoretical models developed for their understanding have been revised and explained in terms related to π-electron delocalization intimately connected with the aromatic and quinoidal characters.
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