A BODIPY derivative as a highly selective "Off-On" fluorescent chemosensor for hydrogen sulfate anion |
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| Authors: | Qian Li Yong Guo Shijun Shao |
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| Institution: | Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China. sjshao@licp.cas.cn. |
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| Abstract: | A new fluorescent receptor for anions has been synthesized by the combination of BODIPY dye and indole moiety. The binding and sensing abilities of receptor toward various anions have been studied by absorption, emission and (1)H NMR titrations spectroscopies. Receptor could act as a highly selective "Off-On" fluorescent sensor for hydrogen sulfate anion in CH(3)CN solvent and CH(3)CN-H(2)O medium. The fluorescence response of receptor toward HSO(4)(-) in CH(3)CN solvent could be due to the suppressed PET (photo-induced electron transfer) process induced by the multiple hydrogen bonding interactions between receptor and HSO(4)(-). In CH(3)CN-H(2)O medium, the HSO(4)(-)-induced change is mainly the consequence of a simple protonation of the CHdouble bond, length as m-dash]N- moiety of receptor , which inhibited the PET process and "turned on" the fluorescence of . |
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