Photophysical property trends for a homologous series of bis-ethynyl-substituted benzochalcogendiazoles
作者:Benjamin A. Coombs、Benjamin D. Lindner、Robert M. Edkins、Frank Rominger、Andrew Beeby、Uwe H. F. Bunz
DOI:10.1039/c2nj20847d
日期:——
We report on the preparation and photophysical property study of three homologous benzoheteroarene–ethynylene systems. Significant differences in the series' optical properties indicate a change in the HOMO–LUMO energy as the chalcogen is altered (O, S and Se) which we have examined using TD-DFT methods and shown to be attributable to modification of the HOMO energy.
我们报道了三种同源苯并杂环–乙炔体系(含O、S和Se)的制备及其光物理性质的研究。系列化合物光学性质的显著差异表明,随着杂原子(O、S和Se)的改变,最高占据分子轨道(HOMO)–最低未占据分子轨道(LUMO)能量发生了变化。我们通过时间相关密度泛函理论(TD-DFT)方法进行了考察,结果显示这种变化可归因于HOMO能量的调整。