Synthesis, characterisation and photophysical studies of oxadiazolyl coumarin: A new class of blue light emitting fluorescent dyes
作者:Akanksha Matta、Vijay Bahadur、Toshiaki Taniike、Johan Van der Eycken、Brajendra K. Singh
DOI:10.1016/j.dyepig.2017.01.050
日期:2017.5
new class of organic compounds were examined for their fluorescent properties and found to emit blue light in the visible region of the spectrum with very high Stoke's shift values. Most of these compounds demonstrated high quantum yields and fluorescence life time in nano-second range which makes them quite lucrative to be used as new fluorescent probes. The highest quantum yield of 0.68 was shown by
的文库新颖1,2连接的香豆素染料4-恶二唑已经合成通过相应的酸的缩合6和Ñ “-hydroxybenzimidamide 8。检查了这类新的有机化合物的荧光特性,发现它们在光谱的可见光区域内发射的蓝光具有很高的斯托克位移值。这些化合物中的大多数显示出高的量子产率和纳秒级的荧光寿命,这使其可用作新的荧光探针非常有利可图。化合物9j显示出最高的量子产率0.68这也显示了较高的斯托克位移值。这些基于香豆素的供体-π-受体(D-π-A)型有机染料的电子结构已通过密度泛函理论(DFT)进行了研究。TGA对几种化合物的分析表明,它们在0-245°C的温度范围内都是稳定的。通过NMR和质谱对合成的化合物进行表征,并且通过X射线晶体学证实了这些化合物中的两种的结构。