Raman spectra of electrosynthesized polyfuran:A combined experimental and theoretical study

摘要

Polyfuran (Pfu) films have been electrochemically deposited on slick platinum or gold electrodes via the direct oxidation of furan in a mixed electrolyte of boron trifluoriee diethyl etherate and ethyl ether (1:1,by volume).The raman spectra of the obtained films,both in the doped and dedopes states,wer studied.Experimental results demponstrated that the Raman spectrum of Pfu in the doped state was different from that of neutral pfu.five bands related to the oxidized species were observed from the spectrum of doped pfu and confirmed by in situs Raman spectroelectrochemical study,microconfocal raman spectroscopy,and surfaceenhanced raman scattering techniques.The raman spectra of pfu in both doped and dedoped states also have been calcuated with the Guassian 98 program at the B3LYP/6-31G~* level,and the results are in good agreement with the recorded raman specta.based on these calcuations,the bands associated with the oxidized species of pfu were assigned.