A tricolor-switchable stimuli-responsive luminescent binuclear Cu(i) complex with switchable NH⋯O interactions

Color regulation of solid-state luminescence is desirable and challenging. We report herein a new 1,2,4-triazole-based bimetallic cuprous complex exhibiting blue-green-yellow tricolor luminescence conversion and thermally activated delayed fluorescence, and the origin and possible application of thi...

Full description

Saved in:
Bibliographic Details
Published in:Inorganic chemistry frontiers 2022-05, Vol.9 (10), p.2305-2314
Main Authors: Ju, Peng, Huang, Qin, Zhang, Rui, Jing-Lin, Chen, Zhao, Feng, Sui-Jun, Liu, He-Rui, Wen
Format: Article
Language:English
Subjects:
Bimetals
Conversion
Crystal lattices
Crystal structure
Dichloromethane
Hydrogen bonds
Inorganic chemistry
Luminescence
NMR
Nuclear magnetic resonance
Single crystals
Structural analysis
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Color regulation of solid-state luminescence is desirable and challenging. We report herein a new 1,2,4-triazole-based bimetallic cuprous complex exhibiting blue-green-yellow tricolor luminescence conversion and thermally activated delayed fluorescence, and the origin and possible application of this tricolor luminescence conversion are also studied. It is shown that blue-green bicolor luminescence conversion is ascribed to the loss and recovery of CH2Cl2 solvent molecules, as supported by the CH2Cl2-filled pore channel structure present in the crystal lattice revealed by single-crystal structural analysis and the variation of CH2Cl2 signal in the 1H NMR spectra. Green-yellow bicolor luminescence conversion is attributed to the destruction and restoration of the packing mode caused by the breaking and rebuilding of NH⋯O hydrogen bonds under grinding and CH2Cl2 vapor, as confirmed by PXRD and FT-IR analyses in various solid states.
ISSN:2052-1545
2052-1553
DOI:10.1039/d2qi00359g