Babar Rabia, Munawar Munawar Ali, Tahir Muhammad Nawaz, Arif Muhammad
Institute of Chemistry, University of the Punjab, Lahore, Pakistan.
Institute of Chemistry, University of the Punjab, Lahore, Pakistan.
Spectrochim Acta A Mol Biomol Spectrosc. 2019 Jun 15;217:223-236. doi: 10.1016/j.saa.2019.03.043. Epub 2019 Mar 20.
A novel series Y-shaped π-expanded imidazole based chromophores was designed and synthesized. The series contains thirteen 2-aryl-4,5-bis[2-(aryl)vinyl)]-1H-imidazoles (6a-6m), which were characterized by spectroscopic analysis. The structures of compounds 6d and 6j were also confirmed by X-ray crystallographic analysis. The optical studies were investigated using absorption and emission measurements in dichloromethane. The fluorescence quantum yields were observed varying in 0.22-0.59 range, but the compounds with nitro substituent did not show the fluorescence. The absorption and emission study of the series helped us to understand the effect of substituents on the optical properties of compounds as well.
设计并合成了一系列新型的基于Y形π-扩展咪唑的发色团。该系列包含13种2-芳基-4,5-双[2-(芳基)乙烯基]-1H-咪唑(6a - 6m)，通过光谱分析对其进行了表征。化合物6d和6j的结构也通过X射线晶体学分析得到了证实。利用二氯甲烷中的吸收和发射测量对光学性质进行了研究。观察到荧光量子产率在0.22 - 0.59范围内变化，但带有硝基取代基的化合物没有显示出荧光。该系列的吸收和发射研究也有助于我们了解取代基对化合物光学性质的影响。
