A 5.3 nm giant metal-organic cage and its supramolecular gel for the formation of dye molecular ionic pairs
Journal
Dalton transactions (Cambridge, England : 2003)
Journal Volume
52
Journal Issue
15
Pages
4980
Date Issued
2023-04-11
Author(s)
Li, Kaixiu
Huang, Jian
Wang, Shi-Cheng
Li, Zhengguang
Wang, Jun
Li, Yiming
Chen, Mingzhao
Liu, Die
Wang, Pingshan
Abstract
A terpyridine-based supramolecular cage was successfully synthesized by the self-assembly of a hexapodal metal-organic ligand with Zn2+. This metallo-cage exhibited two large parallel planes on the top and bottom with diameters close to 6 nm and a face-to-face distance close to 3.5 nm, thus possessing a large cavity. Electrospray ionization mass spectrometry (ESI-MS), nuclear magnetic resonance (NMR), two-dimensional nuclear Overhauser (2D-NOESY), and diffusion-ordered (DOSY) spectroscopies as well as transmission electron microscopy (TEM) and atomic force microscopy (AFM) measurements, unambiguously supported the formation of a supramolecular cage. Furthermore, the corresponding metal-organic gel was felicitously prepared in CH3CN/H2O and displayed good adsorption performance for dye molecules.
Publisher
ROYAL SOC CHEMISTRY
Type
journal article