Molecular Recognition Indicators of Modified Cyclodextrins Using Twisted Intramolecular Charge Transfer Fluorescence
作者： Keita Hamasaki , Akihiko Ueno , Fujio Toda , Iwao Suzuki , Tetsuo Osa
DOI: 10.1246/BCSJ.67.516
关键词:
摘要: Modified α, β, and γ-cyclodextrins that bear one p-(dimethylamino)benzoyl (DMAB) moiety (DMAB-αCyD, DMAB-βCyD, DMAB-γCyD, respectively) were synthesized as fluometric molecular recognition indicators. These three modified cyclodextrins show dual fluorescence arising from normal planar twisted intramolecular charge transfer (TICT) excited states. Among them, the TICT emission was particularly great in case of DMAB-βCyD. The intensity increased for DMAB-αCyD decreased DMAB-βCyD when hosts form inclusion complexes with guest molecules, variation used a sensitivity parameter. effective to detect chain compounds while DMAB-γCyD showed high sensitivities bulky including several steroids. Various detected by orders parallel those binding constants except DMAB-γCyD. results demons...
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