A novel dual-channel chemosensor for CN− based on rhodamine B hydrazide derivatives and its application in bitter almond. Issue 74 (4th October 2017)

• Record Type: Journal Article
• Authors: Pei, Peng-Xiang; Hu, Jing-Han; Ni, Peng-Wei; Long, Chen; Su, Jun-Xia; Sun, You
• Is Part Of: RSC advances. Volume 7:Issue 74(2017)
• Page Start: 46832
• Page End: 46838
• Publication Date: 2017-10-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra09174e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We successfully designed and synthesized a novel chemosensorPW bearing rhodamine B hydrazide and 8-formyl-7-hydroxyl-4-methylcoumarin, which displayed both colorimetric and "turn-on" fluorescence responses for CN − in DMSO/H2 O (1 : 1, v/v, pH = 7.20) solution. Abstract : In this article, we successfully designed and synthesized a novel chemosensorPW bearing rhodamine B hydrazide and 8-formyl-7-hydroxyl-4-methylcoumarin, which displayed both colorimetric and "turn-on" fluorescence responses for CN − in DMSO/H2 O (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 1 H NMR titration, ESI-MS and DFT calculations. The detection limit of the sensorPW towards CN − was 1.592 × 10 −7 M. Moreover, the sensorPW was successfully utilized to detect CN − in bitter almond. Test strips containingPW were also prepared, which could act as a colorimetric tool to detect CN − in practical application.