Evidence of two structurally related solvatochromic probes complexed with β-cyclodextrin by using spectroscopic methods
作者:Sujay Ghosh、Amrit Krishna Mitra、Uttam Pal、Samita Basu、Chandan Saha
DOI:10.1016/j.molstruc.2016.10.097
日期:2017.2
Abstract Interaction of two solvatochromic fluorescent 1-keto-1,2,3,4-tetrahydrocabazole (KTHC) derivatives, viz. 6,7-dimethoxy-2,3,4,9-tetrahydrocarbazol-1-one (KTHC-67) and its carboxylic acid derivative 2-[(2-methoxy-8-oxo-5,6,7,9-tetrahydrocarbazol-3-yl)oxy]acetic acid (MOTHCA), with β-cyclodextrin in aqueous solution has been investigated through steady-state absorption, emission and time-resolved
摘要 两种溶剂化显色荧光 1-keto-1,2,3,4-四氢咔唑 (KTHC) 衍生物的相互作用,即。6,7-二甲氧基-2,3,4,9-四氢咔唑-1-酮(KTHC-67)及其羧酸衍生物2-[(2-甲氧基-8-氧代-5,6,7,9-四氢咔唑已经通过稳态吸收、发射和时间分辨发射光谱研究了 -3-基)氧基]乙酸(MOTHCA)和 β-环糊精的水溶液。每个探针与β-环糊精形成包合物,因此它们的吸收光谱随着等吸收点的形成而猝灭,荧光光谱强度增强,具有最大的低色移,并且产生新的荧光衰减成分并延长寿命。发现这两种探针的光物理特性遵循相似的趋势,尽管与 KTHC-67 相比,MOTHCA 中的羧酸取代稍微影响了结合相互作用。使用分子对接计算了包合物形成的可行性,结果令人满意地解释了实验结果。