![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
Two novel receptors HL-1 and HL-2 without and with hydroxyl groups were designed and synthesised. Both receptors showed highly selective coordination towards Zn2+ and exhibited diverse sensing behaviour due to the structural variations. HL-1 showed monotonous ‘turn-on’ response towards Zn2+ while HL-2 displayed highly Zn2+ sensitive ‘turn on’ and ‘ratiometric’ properties. Detailed Job plot experiment, single crystal data, 1H NMR, ESI-MS, UV–vis and density functional theory calculation studies were conducted to understand the binding modes of HL-1 and HL-2 with Zn2+. These results revealed the binding stoichiometric ratio between receptors and Zn2+ were 1:1 with low detection limits and high binding constants.
Two novel receptors HL-1 and HL-2 without and with hydroxyl groups were designed and synthesised via TCR reaction. Both of them showed selective coordination to Zn2+ ions but exhibited incongruent sensing mode due to structural variations. HL-1 showed monotonous ‘turn-on’ whereas HL-2 displayed highly sensitive ‘turn on’ and ‘ratiometric’ properties towards Zn2+.
Acknowledgements
The authors are grateful for financial support from the National Natural Science Foundation of China (NO.21206016) and the Fundamental Research Funds for the Central Universities (DUT14LK08).
