title: A highly selective ratiometric bifunctional fluorescence probe for Hg(2+) and F(-) ions.
abstract: A triarylborane derivative BN-S, which contains a Hg(2+)-responsive dithioacetal group and a F(-)-responsive boryl group, has been designed and synthesized via the functionalization of 2-dimesitylboryl-2'-(N,N-dimethylamino)biphenyl core skeleton with a dithioacetal substituent. This compound displays intense intramolecular charge transfer fluorescence, even for its nano-aggregates in water. The Hg(2+)-promoted deprotection of the dithioacetal group and complexation of F(-) with the tri-coordinate boron center cause hypochromism of fluorescence to different extents. And thus BN-S behaves as a promising ratiometric bifunctional fluorescence probe to detect Hg(2+) and F(-) simultaneously. In addition, the detection of Hg(2+) is performable in aqueous medium using its nano-aggregates.
authors.affiliation: School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, People's Republic of China. chzhao@sdu.edu.cn.
authors.forename: Qing-Wen
authors.initials: QW
authors.lastname: Xu
authors.forename: Chen
authors.initials: C
authors.lastname: Wang
authors.forename: Zuo-Bang
authors.initials: ZB
authors.lastname: Sun
authors.forename: Cui-Hua
authors.initials: CH
authors.lastname: Zhao
mesh_terms: D001895:Boron / Q000737:chemistry; D004581:Electronics; D005456:Fluorescent Dyes / Q000737:chemistry*; D005461:Fluorine / Q000737:chemistry*; D007477:Ions; D009682:Magnetic Resonance Spectroscopy; D008628:Mercury / Q000737:chemistry*; D055095:Optics and Photonics; D010777:Photochemistry; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry
chemical_list: D005456:Fluorescent Dyes; D007477:Ions; D014867:Water; D005461:Fluorine; D008628:Mercury; D001895:Boron