Novel nematic and glassy liquid crystalline oligomers as electroluminescent organic semiconductors. Issue 5 (9th April 2021)

• Record Type: Journal Article
• Authors: Hu, Guang; Kelly, Stephen M.; Kitney, Stuart P.; Harrison, William; Lambert, Brian
• Is Part Of: Liquid crystals. Volume 48:Issue 5(2021)
• Page Start: 626
• Page End: 640
• Publication Date: 2021-04-09
• Subjects: Nematic and glassy liquid crystalline -- oligomers -- electroluminescence -- organic semiconductors; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2020.1800847
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: Several oligomers (MWs > 1000 g mol −1 ) with highly rigid and conjugated aromatic cores, incorporating 1, 4-disubstituted phenylene, 2, 7-disubstituted fluorene, 1, 4-disubstituted thiophene and/or 2, 7-disubstituted carbazole rings with lateral and terminal substituents were synthesised as novel organic semiconductors. These novel liquid crystalline oligomers exhibit glass transition temperatures above room temperature, high clearing points and a broad nematic temperature range as well as electroluminescent behaviour in solution-processed devices. Abstract :