An intramolecular charge transfer fluorescent probe: synthesis and selective fluorescent sensing of Ag+.
An intramolecular charge transfer (ICT) fluorescent probe, in which the thiourea derivative moiety is linked to the fluorescent 4-(dimethylamino) benzamide, has been designed and synthesized. The ions-selective signaling behaviors of the probe were investigated. Upon the addition of Ag+, an overall emission enhancement of 14-fold was observed. Compound 1 displayed highly selective chelation enhanced fluorescence (CHEF) effect with Ag+ over alkali, alkali earth metal ions and some transition metal ions in aqueous methanol solutions. The prominent selective and efficient fluorescent enhancing behavior could be utilized as a new chemosensing probe for the analysis of Ag+ ion in aqueous environment.
Hubei Key Laboratory on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, PR China.
Honglei
H
Mu
Rui
R
Gong
Lin
L
Ren
Cheng
C
Zhong
Yimin
Y
Sun
Enqin
E
Fu
D002412:Cations / Q000737:chemistry; D005456:Fluorescent Dyes / Q000032:analysis* / Q000138:chemical synthesis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D012834:Silver / Q000032:analysis* / Q000737:chemistry*; D013053:Spectrophotometry
D002412:Cations; D005456:Fluorescent Dyes; D012834:Silver