Effects of anions on the structural regulation of Zn‑salen‑modified metal‑organic cage

作     者：GUO Qiaojia CAI Junkai DUAN Chunying 郭乔佳;蔡俊凯;段春迎

作者机构：State Key Laboratory of Fine ChemicalsDalian University of TechnologyDalianLiaoning 116024China 

出 版 物：《无机化学学报》 (Chinese Journal of Inorganic Chemistry)

年 卷 期：2024年第40卷第11期

页      面：2203-2211页

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：国家自然科学基金(No.92361201,22201129) 江苏省自然科学基金(No.BK20220033)资助 

主　　题：metal-organic cage Zn-salen host-guest electrostatic interaction anions structural regulation 

摘      要：By virtue of a 3∶1 complementary coordination strategy,a chiral heteroleptic metal-organic cage that con-tains divergent functional units,Pd‑R(Zn),was precisely constructed via self-assembly of monodentate variational Zn-salen ligands RZn and NADH(reduced nicotinamide adenine dinucleotide)mimic modified tridentate ligands with square-planar Pd ***-Vis and luminescence spectra experiments reveal that different anions could selec-tively interact with different sites of Zn-salen modified metal-organic cages to achieve the structural regulation of cage compound,by using the differentiated host-guest electrostatic interactions of counter ions with metal-organic *** to other anions,the presence of chloride ions caused the most significant fluorescence emission enhancement of Pd‑R(Zn),meanwhile,the UV-Vis absorption band attributed to the salen aromatic backbone showed an absorption decrease,and the metal-to-ligand induced peak displayed a blue shift *** dichro-ism and ^(1)H NMR spectra further demonstrate that the introduction of chloride anions is beneficial to keeping a more rigid scaffold.