Polarized Blue Emission Based on a Side Chain Liquid Crystalline Polyacrylate Containing Bis-tolane Side Groups

15 March 2002

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 41 (Part 1, No) , 1374-1378
https://doi.org/10.1143/jjap.41.1374

Abstract

A novel side chain liquid crystalline (LC) polyacrylate (1P) containing highly conjugated bis-tolane side groups was synthesized and used for polymer light emitting diodes application. Polymer 1P shows a nematic phase at room temperature. It exhibits a UV absorption peak at 330 nm and emits a blue light at 425 nm. Polyimide (PI), polyaniline (PA) and poly(3,4-diethylenedioxythiophene) (PEDOT) were used as alignment materials for polymer 1P. The photoluminescence dichroic ratios of 1P on rubbed PI, PA and PEDOT films are 10.4, 8.3 and 7.3, respectively. The electroluminescence dichroic ratio of 1P aligned on a PEDOT film is 6.1.

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