哒嗪分子表面增强拉曼效应下键极化率的研究:吸附构型与增强机理

摘要

The temporal molecular bond polarizabilities of pyridazine molecule absorbed on Ag electrode were explored from its surface enhanced Raman intensities, showing that the two nitrogen atoms are the absorption sites and the enhancement is dominated by the charge transfer mechanism.The behaviors of the charges on the skeletal bonds were demonstrated under various applied voltages, which shows the conjugation effect.This algorithm is universal for the surface systems as long as their Raman spectra are available.%本文用拉曼峰强求得时间分辨键极化率的方法,分析了哒嗪分子在银电极上的表面增强拉曼谱图.哒嗪分子在不同电位下的键极化率和其弛豫特征时间,显示该分子的吸附点为两个氮原子,以及该分子体系的电荷转移机制机理,包括共轭的效应.对于具有良好拉曼谱图的体系,这个方法具有普适性.