@article { , title = {A multifunctional tripodal fluorescent probe for the recognition of Cr3+, Al3+, Zn2+ and F− with controllable ESIPT processes}, abstract = {Three 4-(benzo[d]thiazol-2-yl)-2,5-dihydroxybenzaldehyde fluorophores were introduced to construct a tripodal multifunctional ESPIT fluorescence probe L. The fluorescent analysis revealed that probe L exhibited excellent recognition capabilities towards Cr3+, Al3+, Zn2+ and F− ions with large Stokes shifts. Furthermore, under optimal conditions, the detection limit of probe L towards Cr3+, Al3+, Zn2+ and F− were low, of the order of 10−8 M, which indicated that probe L was sensitive to these four ions. Interestingly, the fluorescent and 1H NMR titration experiments revealed that the recognition mechanism of probe L towards the ions Cr3+, Al3+, Zn2+ and F− were different. The presence of Cr3+ and Al3+ recovered the ESIPT, but the presence of Zn2+ trigger a moderate deprotonation of the phenolic OH and induced an ESIPT red-shifted (60 nm) emission wavelength. Finally, the presence of F− completely deprotonated the free phenolic OH and a remarkable red-shifted (130 nm) ESIPT emission was observed. In other words, the ESIPT process of probe L is controllable. Furthermore, the utility of probe L as a biosensor in living cells (PC3 cells) towards Cr3+, Al3+ and Zn2+ ions has been demonstrated.}, doi = {10.1016/j.dyepig.2018.10.025}, eissn = {1873-3743}, issn = {0143-7208}, journal = {Dyes and Pigments}, pages = {257-265}, publicationstatus = {Published}, publisher = {Elsevier}, url = {https://hull-repository.worktribe.com/output/1134671}, volume = {162}, keyword = {Specialist Research - Other, Process chemistry and technology, General chemical engineering, Fluorescent probe, ESIPT, Recognition, Cr3+, Al3+, Zn2+ and F−, Living cell}, year = {2019}, author = {Zhang, Hong and Sun, Tao and Ruan, Qin and Zhao, Jiang-Lin and Mu, Lan and Zeng, Xi and Jin, Zongwen and Su, Shaobo and Luo, Qingying and Yan, Yiyong and Redshaw, Carl} }