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Revealing High-Lying Intersystem Crossing in Brightly Luminescent Cyclic Trinuclear Cu/Ag Complexes. | LitMetric

Revealing High-Lying Intersystem Crossing in Brightly Luminescent Cyclic Trinuclear Cu/Ag Complexes.

J Phys Chem Lett

College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China.

Published: March 2020

AI Article Synopsis

Article Abstract

The increased attention to luminescent copper(I) complexes, mostly mononuclear and dinuclear ones, in the past few years was mainly due to the new pathways established in the intersystem crossing (ISC) for highly efficient singlet/triplet harvesting, which showed great potential in light-emitting devices. Governing the photophysical processes of planar cyclic trinuclear complexes is more challenging owing to the rich intra- and intermolecular metal-metal interactions involved, but new opportunities also accompany this. Herein reported is a hidden route to the ultra-long-lived, highly efficient phosphorescence of cyclic trinuclear two-coordinate Cu-pyrazolate complexes through pushing the unfavorable metal-to-ligand charge transfer events to the high-lying ISC pathways. Moreover, an anomaly of much higher quantum yields of a trinuclear Ag-pyrazolate complex relative to its Cu analogue is observed.

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Source
http://dx.doi.org/10.1021/acs.jpclett.9b03382DOI Listing

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