期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 199, 期 -, 页码 369-376出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.04.005
关键词
Anion recognition; Cyanide selective chemosensor; CO2 sensing; Colorimetric sensor; Fluorescence sensor
资金
- National Research Foundation of Korea (NRF) - Korea Government (MSIP) [2012R1A3A2048814]
- NRF - MEST [2007-0056343]
- National Research Foundation of Korea [2012R1A3A2048814] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In the present study, we report the solvent controlled selectivity of cyanide. A newly synthesized bis-pyrene derivative 1 exhibited large off-on fluorescence enhancement with fluoride and cyanide in CH3CN-DMSO (99:1, v/v), which was accompanied by unique colorimetric changes. Likewise, in CH3CN-DMSO-EtOH (98:1:1, v/v) or CH3CN-DMSO-H2O (94:1:5, v/v), selective fluorescence enhancement with cyanide was observed among the various anions, which was attributed to a favourable interaction between the fluoride ion with ethanol or water. The binding modes, UV absorption and fluorescence changes of 1 upon CN- binding are also explained by DFT calculations. Probe 1 was successfully applied for imaging cyanide in the HeLa cells. Finally, anion-activated CO2 sensing via colour and fluorescence changes is demonstrated using chemosensor 1. (C) 2014 Published by Elsevier B.V.
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