The photophysical properties of a new 4-aza-indole derivative [ethyl 1-((2-(2-ethoxy-2-oxoethyl)pyridin-3-yl)carbamoyl)-2-hydroxy-1H-pyrrolo-[3,2-b]pyridine-3-carboxylate, 12] were determined in different solvents. Compound 12 exhibited an absorbance peak at 340–360 nm with high fluorescence intensity in the wavelength range from 405 to 417 nm in all solvents except N,N-dimethylformamide (DMF). Compound 12 exhibited reverse solvatochromism behavior depending on the solvent polarity. Furthermore, compound 12 showed very high quantum yield in all solvents independent of their polarity. The results suggest that this novel dye could be used for many applications, e.g., as a labeling agent and in bio- or analytical sensors and/or optoelectronic devices.
一种新型
4-氮杂吲哚衍
生物[乙基1-((2-(2-乙氧基-2-氧代乙基)
吡啶-3-基)
氨甲酰)-2-羟基-1H-
吡咯并[3,2-b]
吡啶-3-
羧酸酯,12]的光物理特性在不同溶剂中进行了测定。化合物12在340–360 nm范围内显示出吸收峰,在405到417 nm的波长范围内具有较高的荧光强度,除了
N,N-二甲基甲酰胺(
DMF)之外。在不同溶剂极性下,化合物12表现出逆溶剂氛围色性行为。此外,化合物12在所有溶剂中显示出非常高的量子产率,与溶剂的极性无关。结果表明,这种新型
染料可用于多种应用,例如作为标记剂以及用于
生物或分析传感器和/或光电设备。