Details

Autor(en) / Beteiligte

• El Sayed Moussa, Mehdi
• Khalil, Ali Moustafa
• Evariste, Sloane
• Wong, Hok-Lai
• Delmas, Vincent
• Le Guennic, Boris
• Calvez, Guillaume
• Costuas, Karine
• Yam, Vivian Wing-Wah
• Lescop, Christophe

Titel

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

Ist Teil von

• Inorganic chemistry frontiers, 2020-03, Vol.7 (6), p.1334-1344

Ort / Verlag

London: Royal Society of Chemistry

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 Au 2 Cu 4 and Pt 2 Cu 8 assemblies led to the unexpected and ready formation of the Au 2 Cu 10 and Pt 4 Cu 11 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. Highly luminescent solid-state Cu 6 , Au 2 Cu 10 and Pt 4 Cu 11 derivatives are obtained in one step reaction thanks to adaptive coordination-driven supramolecular chemistry using pre-assembled flexible Cu( i ) precursors.