@article { , title = {An efficient ICT-based ratio/colorimetric tripodal azobenzene probe for the recognition/discrimination of F−, AcO− and H2PO4− anions}, 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).}, doi = {10.1016/j.saa.2019.117174}, issn = {1386-1425}, journal = {Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy}, publicationstatus = {Published}, publisher = {Elsevier}, url = {https://hull-repository.worktribe.com/output/2313968}, volume = {221}, keyword = {Specialist Research - Other, Tripodal azobenzene probe, Ratio/colorimetric, Recognition/discrimination, Anion, Instrumentation, Analytical Chemistry, Spectroscopy, Atomic and Molecular Physics, and Optics}, year = {2019}, author = {Liao, Xian and Fang, Jun An and Zhao, Jiang Lin and Ruan, Qin and Zeng, Xi and Luo, Qing Ying and Redshaw, Carl} }