荧光
四苯乙烯
脂质体
化学
环糊精
费斯特共振能量转移
转身(生物化学)
光化学
生物物理学
色谱法
生物
生物化学
量子力学
物理
聚集诱导发射
作者
Kosuke Masuda,Riku Omokawa,Riku Kawasaki,Yuta Mise,Yousuke Ooyama,Shogo Harada,Wataru Shinoda,Atsushi Ikeda
标识
DOI:10.1002/chem.202203071
摘要
Herein, trimethyl-β-cyclodextrin (TMe-β-CDx) and γ-cyclodextrin (γ-CDx) could dissolve a tetraphenylethylene derivative (TPE-OH4 ) in water through high-speed vibration milling. The fluorescence intensity of the TMe-β-CDx-TPE-OH4 complex was much higher than that of the γ-CDx-TPE-OH4 complex, as the rotation of the central C=C double bond of TPE-OH4 after photoactivation was inhibited in a smaller TMe-β-CDx cavity in comparison with the γ-CDx cavity. In contrast, the fluorescence intensity of the γ-CDx-TPE-OH4 complex was very weak; nevertheless, it increased after the addition of liposomes due to the transfer of TPE-OH4 from the γ-CDx cavity to the lipid membrane as a "turn-on" phenomenon. Furthermore, to apply temperature sensor, it was demonstrated that the fluorescence intensity in the liposomes depended on the phase-transition temperature. By using the fluorescence turn-on phenomenon, TPE-OH4 could detect the presence of HeLa cells and E. coli by fluorescence.
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