Journal
DALTON TRANSACTIONS
Volume 41, Issue 26, Pages 8077-8085Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt30259d
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Funding
- National Science Foundation [CHE-1055547]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1055547] Funding Source: National Science Foundation
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Presented is the synthesis of an array of 16 heteroleptic phosphorescent diimine complexes of platinum(II) with electronically diverse ligand spheres and their full spectroscopic, photophysical, and electrochemical characterization. The complexes were found to exhibit luminescence (480-500 nm) in deaerated solutions at room temperature from a long-lived (LC)-L-3 state (tau = 2-3 mu s) that exhibits significant metal character perturbed by a low-lying (MLCT)-M-1 state. Interestingly, emission from a (MLCT)-M-3 state was not observed as is the case with many other polypyridine-based d-block complexes. Electrochemical intermediates proved stable as multiple reversible reductions between -1 and -2 V vs. SCE were noted during cyclic voltammetry experiments unveiling the potential of these luminophores for use in a variety of optoelectronic and solar energy conversion applications.
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