Title of article :
A squaraine and Hg2+-based colorimetric and “turn on” fluorescent probe for cysteine
Author/Authors :
Lin، نويسنده , , Qian and Huang، نويسنده , , Yangwei and Fan، نويسنده , , Juan and Wang، نويسنده , , Ruyong and Fu، نويسنده , , Nanyan، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2013
Abstract :
A novel squaraine derivative (SQ-1) was synthesized and characterized for the determination of cysteine. Binding with Hg2+ as a fluorescent quencher to SQ-1 leads to absorption and emission turn-off. More significantly, the SQ-1–Hg2+ complex exhibits a dual-channel chromofluorogenic responses to biologically important cysteine with a high sensitivity and selectivity over other natural amino acids, along with a low detection limit of 36.7 nM.
Keywords :
mercury , Squaraine , Fluorescent chemosensor , Cysteine
