Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy · 2016
A highly selective fluorescent probe based on Michael addition for fast detection of hydrogen sulfide.
СтатьяНазвание и аннотация: Перевод в очереди
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Gao Baozhen, Cui Lixia, Pan Yong, Xue Minjie, Zhu Boyu, Zhang Guomei, Zhang Caihong, Shuang Shaomin, Dong Chuan
Аннотация
A new 4-hydroxy-1,8-naphthalimide-based compound (probe 1) has been designed and synthesized. The colorimetric and fluorescent properties of probe 1 towards hydrogen sulfide (H2S) were investigated in detail. The results show that the probe 1 could selectively and sensitively recognize H2S rather than other reactive sulfur species. The reaction mechanism of this probe is an intramolecular cyclization caused by the Michael addition of H2S to give 4-hydroxy-1,8-naphthalimide. The intramolecular charge transfer of 4-hydroxy-1,8-naphthalimide is significant. Probe 1 quickly responded to H2S and showed a 75-fold fluorescence enhancement in 5min. Moreover, probe 1 could detect H2S quantitatively with a detection limit as low as 0.23μM.