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Zhang, Y; Garg, J A; Michelin, C; Fox, T; Blacque, O; Venkatesan, K (2011). Synthesis and luminescent properties of cis bis-n-heterocyclic carbene platinum(II) bis-arylacetylide complexes. Inorganic Chemistry, 50(4):1220-1228.

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Abstract

A series of luminescent N-heterocyclic carbene platinum(II) complexes, (pmim)Pt(C C-R)(2)] (R = C(6)H(5) (2), C(6)H(4)OMe (3), C(6)H(2)(OMe)(3) (4), C(6)H(4)NMe(2) (5), C(4)H(3)S (6), C(6)H(4)C CC(6)H(5) (7). 1-pyrenyl (8), and C(6)H(4)F (9)), were successfully synthesized using the precursor (pmim)PtI(2), 1 (pmim = 1,1'-dipentyl-3,3'-methylene-diimidazoline-2,2'-diylidene). The X-ray crystal structures of 1, 4, 5, and 7 have been determined. These complexes showed long-lived emission in solution at room temperature. The emission origin of the complexes is tentatively assigned to be from triplet states of predominantly intraligand (IL) character with some mixing of metal-to-ligand charge-transfer (MLCT) character. TD-DFT and DFT calculations have been performed on most of the complexes to ascertain the nature of the excited state. Changes in the alkynyl ligands lead to a change in the absorption and emission maxima seen for these complexes in a potentially predictable way.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
DDC:540 Chemistry
Language:English
Date:February 2011
Deposited On:12 Mar 2012 17:04
Last Modified:27 Nov 2013 17:25
Publisher:American Chemical Society
ISSN:0020-1669
Publisher DOI:10.1021/ic101632v
Other Identification Number:ISI:000287175600011

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