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An efficient ICT-based ratio/colorimetric tripodal azobenzene probe for the recognition/discrimination of F−, AcO− and H2PO4− anions

Liao, Xian; Fang, Jun An; Zhao, Jiang Lin; Ruan, Qin; Zeng, Xi; Luo, Qing Ying; Redshaw, Carl

Authors

Xian Liao

Jun An Fang

Jiang Lin Zhao

Qin Ruan

Xi Zeng

Qing Ying Luo

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Professor Carl Redshaw C.Redshaw@hull.ac.uk
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry



Abstract

The tripodal probe L was readily prepared via introducing rhodamine and azobenzene groups in a two-step procedure. Studies of the recognition properties indicated that probe L exhibited high sensitivity and selectivity towards F−, AcO− and H2PO4− through a ratiometric colorimetric response with low detection limits of the order of 10−7 M. The complexation behaviour was fully investigated by spectral titration, 1H NMR spectroscopic titration and mass spectrometry. Probe L not only recognizes F−, AcO− and H2PO4−, but can also distinguish between these three anions via the different ratiometric behaviour in their UV–vis spectra (387/505 nm for L-H2PO4−, 387/530 nm for L-AcO− and 387/575 nm for L-F− complex) or via different colour changes (light coral for L-H2PO4−, light pink for L-AcO− and violet for the L-F− complex). Additionally, given the presence of NH and OH groups in probe L, which can be protonated and deprotonated, probe L further exhibited an excellent pH response over a wide pH range (pH 3 to pH 12).

Citation

Liao, X., Fang, J. A., Zhao, J. L., Ruan, Q., Zeng, X., Luo, Q. Y., & Redshaw, C. (2019). An efficient ICT-based ratio/colorimetric tripodal azobenzene probe for the recognition/discrimination of F−, AcO− and H2PO4− anions. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 221, Article 117174. https://doi.org/10.1016/j.saa.2019.117174

Journal Article Type Article
Acceptance Date May 26, 2019
Online Publication Date May 28, 2019
Publication Date Oct 5, 2019
Deposit Date Aug 6, 2019
Publicly Available Date May 29, 2020
Journal Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Print ISSN 1386-1425
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 221
Article Number 117174
DOI https://doi.org/10.1016/j.saa.2019.117174
Keywords Tripodal azobenzene probe; Ratio/colorimetric; Recognition/discrimination; Anion; Instrumentation; Analytical Chemistry; Spectroscopy; Atomic and Molecular Physics, and Optics
Public URL https://hull-repository.worktribe.com/output/2313968
Publisher URL https://www.sciencedirect.com/science/article/pii/S1386142519305645?via%3Dihub
Additional Information ©2019, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

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