title: Oxidized bis(indolyl)methane: a simple and efficient chromogenic-sensing molecule based on the proton transfer signaling mode.
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.
authors.affiliation: Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, PR China.
authors.forename: Xiaoming
authors.initials: X
authors.lastname: He
authors.forename: Shuzhen
authors.initials: S
authors.lastname: Hu
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.forename: Yong
authors.initials: Y
authors.lastname: Guo
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
authors.forename: Shijun
authors.initials: S
authors.lastname: Shao