Tuning the Phosphorescence and Solid State Luminescence of Triarylborane-Functionalized Acetylacetonato Platinum Complexes

Kumar, George Rajendra and Thilagar, Pakkirisamy (2016) Tuning the Phosphorescence and Solid State Luminescence of Triarylborane-Functionalized Acetylacetonato Platinum Complexes. In: INORGANIC CHEMISTRY, 55 (23). pp. 12220-12229.

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Abstract

A new series of luminescent cyclometalated platinum complexes with triarylborane-functionalized acetylacetonate ligands is reported. The complexes exhibit solid state luminescence and phosphorescence under ambient conditions. The luminescence color can be tuned from green to red by varying the cyclometalating ligand 2-phenylpyridine (for 1 and 2), 2-thiophenylpyridine (for 3 and 4), 2-thianapthenylpyridine (for 5 and 6)]. The luminescence originates from mixed (MLCT)-M-3/(IL)-I-3 MLCT, metal to ligand charge transfer; IL, intraligand] states of square planar platinum and borane moieties. The pi spacer (phenyl or duryl) which connects the boryl and platinum entities has a significant role in determining the photoluminescence efficiency. The bulky duryl spacer in 2, 4, and 6 significantly reduces pi-pi. stacking of the square planar platinum moiety in the solid state and provides a rigid backbone, thereby increasing their quantum yield significantly. The role of Lewis-acidic borane on the photoluminescence features is evaluated by fluoride binding experiments.

Item Type:	Journal Article
Publication:	INORGANIC CHEMISTRY
Additional Information:	Copy right for this article belongs to theAMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	31 Jan 2017 04:37
Last Modified:	31 Jan 2017 04:37
URI:	http://eprints.iisc.ac.in/id/eprint/55965

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