Intramolecular rearrangements guided by adaptive coordination-driven reactions toward highly luminescent polynuclear Cu(i) assemblies

Adaptive coordination-driven supramolecular chemistry based on conformationally flexible pre-organized luminescent Cu(i) precursors paves the way to the ready formation of an intricate supramolecular scaffold possessing intrinsic luminescence properties. A formal ring extension of a tetrametallic Cu...

Full description

Saved in:
Bibliographic Details
Published in:Inorganic chemistry frontiers 2020-03, Vol.7 (6), p.1334-1344
Main Authors: Mehdi El Sayed Moussa, Ali Moustafa Khalil, Sloane Evariste, Wong, Hok-Lai, Delmas, Vincent, Boris Le Guennic, Calvez, Guillaume, Costuas, Karine, Yam, Vivian Wing-Wah, Lescop, Christophe
Format: Article
Language:English
Subjects:
Assemblies
Coordination
Copper
Crystallography
Fluorescence
Heavy metals
Inorganic chemistry
Luminescence
Optical properties
Organometallic compounds
Scaffolds
Solid state
Spin-orbit interactions
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:Adaptive coordination-driven supramolecular chemistry based on conformationally flexible pre-organized luminescent Cu(i) precursors paves the way to the ready formation of an intricate supramolecular scaffold possessing intrinsic luminescence properties. A formal ring extension of a tetrametallic Cu(i) metallacycle bearing Thermally Activated Delayed Fluorescence (TADF) properties can thus be carried out, affording a new hexametallic Cu(i) metallacycle 1 bearing modulated solid-state TADF properties. Attempts to adapt this ring extension process to the formation of targeted heterometallic Au2Cu4 and Pt2Cu8 assemblies led to the unexpected and ready formation of the Au2Cu10 and Pt4Cu11 derivatives 2 and 3, respectively. These outcomes strengthen the scope and perspectives of adaptive coordination-driven supramolecular chemistry compared to those of conventional coordination-driven supramolecular chemistry. Indeed, it guides concerted intramolecular fragmentation and redistribution of the particular building blocks used, affording selectively supramolecular scaffolds of higher nuclearity and complexity. The study of the solid-state photophysical properties of the assemblies 2 and 3 highlights enhanced and original behaviors, in which the heavy metal spin–orbit coupling values significantly influence the relaxation processes centered on the Cu(i) metal centers.
ISSN:2052-1545
2052-1553
DOI:10.1039/c9qi01595g