Highly sensitive fluorescent sensor targeting CuCl2 based on thiophene attached anthracene compound (TA) |
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Authors: | Thuy Van Thi Nguyen Young Jun Seo |
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Institution: | 1. Department of Bioactive Material Sciences, Chonbuk National University, South Korea;2. Department of Chemistry, Chonbuk National University, South Korea |
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Abstract: | A novel thiophene attached anthracene (TA) based fluorescent compound was designed and synthesized. The TA showed a high quantum yield (Qy = 0.34) in regard to fluorescence. We applied this TA compound to detect specific metal compound and found that it could identify CuCl2 from other metals through dramatic fluorescence change at λmax = 460 nm. It showed strong quenching fluorescence property with CuCl2 while with other metal compounds it exhibited strong blue fluorescence emission. UV/Vis absorption spectroscopy clearly demonstrated that the quenching property of TA at λmax = 460 nm was due to overlapping of the fluorescence peak of TA at λmax = 460 nm and the absorption band of CuCl2 (from 190 nm to 525 nm). Binding constant (K′), which was 0.0895 mM?2, indicated a complexation ratio between TA and CuCl2 as 1:2 and this interaction induced quenching property. |
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Keywords: | Fluorophore Thiophene attached anthracene Sensor Binding constant |
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