A novel dual-channel chemosensor for CN− based on rhodamine B hydrazide derivatives and its application in bitter almond
| Autor: | You Sun, Chen Long, Peng-Xiang Pei, Jun-Xia Su, Jing-Han Hu, Peng-Wei Ni |
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| Rok vydání: | 2017 |
| Předmět: |
Detection limit
010405 organic chemistry Chemistry General Chemical Engineering General Chemistry 010402 general chemistry 01 natural sciences Fluorescence 0104 chemical sciences Test strips Deprotonation Intramolecular force Proton NMR Organic chemistry Rhodamine B hydrazide Titration Nuclear chemistry |
| Zdroj: | RSC Adv.. 7:46832-46838 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra09174e |
| Popis: | 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 1H NMR titration, ESI-MS and DFT calculations. The detection limit of the sensor PW towards CN− was 1.592 × 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. |
| Databáze: | OpenAIRE |
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