A novel reaction-based colorimetric and ratiometric fluorescent sensor for cyanide anion with a large emission shift and high selectivity.
作者： Shaodan Wang , Xiaoliang Fei , Jing Guo , Qingbiao Yang , Yaoxian Li
DOI: 10.1016/J.TALANTA.2015.10.058
关键词:
摘要: A hybrid carbazole-hemicyanine dye (Cac) has been developed as a novel colorimetric and ratiometric fluorescent sensor for cyanide detection. Upon treatment with cyanide, Cac displayed remarkable fluorescence response, the emission wavelength displaying very large shift (214 nm). The detection of was performed via nucleophilic addition anion to indolium group sensor, which resulted in blocking intramolecular charge transfer (ICT) process inducing change simultaneously an obvious color change. Furthermore, competitive anions did not showed any significant changes both intensity ratio (I381/I595), indicating high selectivity CN(-).
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