Site-Selective Hydrogen-Bonding-Induced Fluorescence Quenching of Highly Solvatofluorochromic GFP-like Chromophores
作者:Guan-Jhih Huang、Jinn-Hsuan Ho、Ch. Prabhakar、Yi-Hung Liu、Shie-Ming Peng、Jye-Shane Yang
DOI:10.1021/ol302237k
日期:2012.10.5
The unconstrained green fluorescence protein (GFP)-like chromophore m-DMABDI displays a high solvatofluorochromicity in aprotic solvents, but the fluorescence is quenched in protic solvents. According to the site-specific intramolecularly hydrogen-bonded analogs 1OH and 2OH, the hydrogen bonding to the carbonyl oxygen is more important than that to the imino nitrogen of the imidazolinone group in the fluorescence quenching.