Synthesis, Characterization, and Photophysical Study of Fluorescent N-substituted Benzo[ghi]perylene “Swallow Tail” Monoimides
作者:Steven J. Manning、William Bogen、Lisa A. Kelly
DOI:10.1021/jo200529p
日期:2011.8.5
characterized structurally and photophysically. Condensation of benzo[ghi]perylene-1,2-dicarboxylic anhydride in the presence of “swallow tail” alkyl amines produced fluorophores that are soluble in a range of organic solvents, highly absorbing in the near-UV (ε334 = 79 000 M–1cm–1), and fluorescent in the visible range. Photophysical behavior of the compounds was studied with steady-state and time-correlated
合成了一组N-取代的苯并per单酰亚胺(BPI)荧光团,并对其结构和光物理性质进行了表征。在“燕尾”烷基胺存在下缩合苯并per-1,2-二羧酸酐产生的荧光团可溶于多种有机溶剂,在近紫外光下高度吸收(ε334 = 79 000 M –1 cm –1),并且在可见光范围内发出荧光。使用稳态和与时间相关的单光子计数研究了化合物的光物理行为。合成的BPI表现出正的发色光发射(λem(己烷)= 469 nm; λem(乙醇)= 550 nm)作为溶剂极性的函数,在所研究的极性范围内,其激发态寿命(9.6–6.5 ns)和荧光量子产率(0.27–0.44)几乎没有变化。使用Lippert-Mataga方法分析了色度变化。在非极性烃类溶剂中,观察到紧密间隔(562 cm –1)的S 1和S 2激发态双重发射的证据。初步确定了异常S 2发射的峰值。