Highly red-shifted NIR emission from a novel anthracene conjugated polymer backbone containing Pt(II) porphyrins

D.M.E. Freeman, A. Minotto, W. Duffy, K.J. Fallon, I. McCulloch, F. Cacialli, H. Bronstein
Polym. Chem., 7, 722-730, (2016)

Highly red-shifted NIR emission from a novel anthracene conjugated polymer backbone containing Pt(II) porphyrins

Keywords

Diphenylanthracene (DPA), semiconducting polymer

Abstract

​We present the synthesis of a novel diphenylanthracene (DPA) based semiconducting polymer. The polymer is solubilised by alkoxy groups attached directly to a DPA monomer, meaning the choice of co-monomer is not limited to exclusively highly solubilising moieties. Interestingly, the polymer shows a red-shifted elecroluminescence maximum (510 nm) when compared to its photoluminescence maximum (450 nm) which we attribute to excimer formation. The novel polymer was utilised as a host for a covalently-linked platinum(II) complexed porphyrin dopant. Emission from these polymers was observed in the NIR and again showed almost a 100 nm red shift from photoluminescence to electroluminescence. This work demonstrates that utilising highly aggregating host materials is an effective tool for inducing red-shifted emission in OLEDs.

Code

DOI: 10.1039/C5PY01473E

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