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Oxidized bis(indolyl)methane: a simple and efficient chromogenic-sensing molecule based on the proton transfer
Xiaoming He1, Shuzhen Hu, Kai Liu
1Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, PR China.
Organic Letters
|January 18, 2006
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.

