A new fluorescent "turn-on" chemodosimeter for cyanide based on dual reversible and irreversible deprotonation of NH and CH groups

作者:Zhang Chuanxiu; Liu Chuanxiang*; Li Baiyun; Chen Jinju; Zhang Hua; Hu Zhou; Yi Fengping
来源:New Journal of Chemistry, 2015, 39(3): 1968-1973.
DOI:10.1039/c4nj01675k

摘要

A new fluorescent "turn-on" cyanide chemodosimeter 5 was developed for the first time based on the irreversible deprotonation/oxidation of the CH group followed by the reversible deprotonation of the NH group, with high selectivity and dramatic red-shifted absorption (approximate to 263 nm). The photoinduced electron transfer (PET) is prevented by the irreversible process, which results in coplanar geometry between indole and naphthalimide causing enhancement of fluorescence.