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含能材料  2011 

9-乙炔基-9-羟基蒽酮结构和荧光性能的理论研究

DOI: 10.3969/j.issn.1006-9941.2011.02.015

Keywords: 量子化学,9-乙炔基-9-羟基蒽酮(EHAO),荧光,检测

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Abstract:

采用含时密度泛函理论(TDDFT)和单激发组态(CIS)方法计算了9-乙炔基-9-羟基蒽酮(EHAO)的激发能(3.4eV)和发射能(2.7eV)。通过前线轨道分析,描述了CH3OH和TNT对9-乙炔基-9-羟基蒽酮荧光光谱的不同影响机理。结果表明,CH3OH与9-乙炔基-9-羟基蒽酮作用后,第一激发态跃迁仍然是在9-乙炔基-9-羟基蒽酮分子内发生,但原有的荧光性能受到一定影响。TNT与9-乙炔基-9-羟基蒽酮作用后,HOMO轨道仍然分布在9-乙炔基-9-羟基蒽酮上,但LUMO轨道则转移至TNT。因此,发生第一激发态跃迁时,将发生分子间电子转移,从而引起荧光猝灭效应。

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