期刊
RSC ADVANCES
卷 7, 期 74, 页码 46832-46838出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra09174e
关键词
-
资金
- National Nature Science Foundation of China [21467012]
In this article, we successfully designed and synthesized a novel chemosensor PW bearing rhodamine B hydrazide and 8-formyl-7-hydroxyl-4-methylcoumarin, which displayed both colorimetric and turn-on fluorescence responses for CN- in DMSO/H2O (1 : 1, v/v, pH = 7.20) solution. The probe could distinguish CN- via a deprotonation process and the mechanism of intramolecular charge transfer (ICT), which was proved by H-1 NMR titration, ESI-MS and DFT calculations. The detection limit of the sensor PW towards CN- was 1.592 x 10(-7) M. Moreover, the sensor PW was successfully utilized to detect CN- in bitter almond. Test strips containing PW were also prepared, which could act as a colorimetric tool to detect CN- in practical application.
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