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Rigidification-Induced Emissive Metal-Carbene Complexes for Artificial Light Harvesting

Purba, PC and Maitra, PK and Bhattacharyya, S and Mukherjee, PS (2023) Rigidification-Induced Emissive Metal-Carbene Complexes for Artificial Light Harvesting. In: Inorganic Chemistry .

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Official URL: https://doi.org/10.1021/acs.inorgchem.3c01075


A tetraphenylethylene (TPE)-based flexible imidazolium (L) salt was used to develop a di-nuclear silver(I)-tetracarbene (1) complex. Coordination-induced rigidity upon formation of 1 exhibited a 6-fold increase in emission intensity in acetonitrile compared to starting L. Despite TPE being a well-known aggregation-induced emissive moiety, AgI-N-heterocyclic carbene (NHC) complex 1 had a remarkably higher fluorescence emission (4-fold) in dilute solution when compared with L in its aggregated state. Finally, this enhanced emission was used to institute a new platform for an artificial light-harvesting system. 1 acted as an energy donor and efficiently transferred energy to Eosin Y (ESY) with a high saturation at a 67:1 (1/ESY) molar ratio. Use of rigidification-induced emission of the AgI-NHC complex to fabricate a light-harvesting scaffold is a new approach and can greatly impact the generation of smart materials.

Item Type: Journal Article
Publication: Inorganic Chemistry
Publisher: American Chemical Society
Additional Information: The copyright for this article belongs to the American Chemical Society.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 31 Jul 2023 11:32
Last Modified: 31 Jul 2023 11:32
URI: https://eprints.iisc.ac.in/id/eprint/82765

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