Fluorescent sensor based on dimesitylborylthiophene derivative for probing fluoride and cyanide |
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Authors: | Junhui Jia Pengchong Xue Yuan Zhang Qiuxia Xu Gonghe Zhang Tianhao Huang Hanzhuang Zhang Ran Lu |
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Affiliation: | 1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China;2. College of Chemistry, Beijing Normal University, Beijing 100875, China;3. College of Physics, Jilin University, Changchun 130012, PR China |
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Abstract: | A new D-π-A dimesitylboron derivative with terminal phenothiazine bridged by fluorenevinyl (PFTB) has been synthesized. It was found that PFTB could selectively recognize fluoride and cyanide anions by naked eyes. Upon addition of F− and CN−, the color of the solution of PFTB in DCM turned to yellowish-green from yellow and strong green emitting was observed under UV light, while the emission of PFTB in DCM was weak. Moreover, the presence of 10 equiv of tetrabutylammonium salts of other anions, such as Cl−, Br−, I−, AcO−, HSO4−, H2PO4−, could not lead to obvious changes of the UV–vis absorption and the fluorescent emission spectra of PFTB. The detection limits of PFTB towards F− and CN− were 7.52×10−8 mol/L and 6.12×10−8 mol/L in DCM, respectively. Therefore, the D-π-A type triarylborane derivatives can be used as ‘turn on’ fluorescent sensors for detecting F− and CN−. |
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Keywords: | Sensor Dimesitylboron Fluoride Cyanide Two-photon fluoresence |
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