From red to near infra-red OLEDs: the remarkable effect of changing from X = -Cl to -NCS in a cyclometallated [Pt(N^C^N)X] complex {N^C^N = 5-mesityl-1,3-di-(2-pyridyl)benzene}

Ester Rossi; Alessia Colombo; Claudia Dragonetti; Dominique Roberto; Francesco Demartin; Massimo Cocchi; Pierpaolo Brulatti; Valeria Fattori; J A Gareth Williams

doi:10.1039/c2cc16399c

From red to near infra-red OLEDs: the remarkable effect of changing from X = -Cl to -NCS in a cyclometallated [Pt(N^C^N)X] complex {N^C^N = 5-mesityl-1,3-di-(2-pyridyl)benzene}

Chem Commun (Camb). 2012 Mar 28;48(26):3182-4. doi: 10.1039/c2cc16399c. Epub 2012 Feb 20.

Authors

Ester Rossi¹, Alessia Colombo, Claudia Dragonetti, Dominique Roberto, Francesco Demartin, Massimo Cocchi, Pierpaolo Brulatti, Valeria Fattori, J A Gareth Williams

Affiliation

¹ Dip.CIMA L. Malatesta, via Venezian 21, 20133 Milano, Italy.

PMID: 22349220
DOI: 10.1039/c2cc16399c

Abstract

[PtL(6)X] {X = Cl or NCS and L(6) = 5-mesityl-1,3-di(2-pyridyl)-benzene} display similar luminescence in solution but, in the solid state, the packing of the molecules is different, with short PtPt interactions for X = NCS, leading to a red-shifted emission band. The effect has been used to generate OLEDs that emit squarely in the NIR region (855 nm).