Oxidized Bis(indolyl)methane: A Simple and Efficient Chromogenic-Sensing Molecule Based on the Proton Transfer Signaling Mode
Xiaoming He(Lanzhou Institute of Chemical Physics), Shuzhen Hu(Chinese Academy of Sciences), Kai Liu(Lanzhou Institute of Chemical Physics), Yong Guo(Lanzhou Institute of Chemical Physics), Jian Xu(Lanzhou Institute of Chemical Physics), Shijun Shao(Chinese Academy of Sciences)
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Abstract
[reaction: see text] Oxidized bis(indolyl)methane, 1, a simple chromophore containing an acidic H-bond donor moiety and a basic H-bond acceptor moiety, can act as a selective colorimetric sensor either for F(-) in aprotic solvent or for HSO(4)(-) and weak acidic species in water-containing medium. The deprotonation/protonation of oxidized bis(indolyl)methane 1 is responsible for the dramatic color change.
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