Structural Geometry Variation of 1,4-Naphthalene-Based Co-Polymers to Tune the Device Performance of PVK-Host-Based OLEDs

Qian Liu; Dhanashree Moghe; Gopa Sardar; Sergei Manzhos; Steven E Bottle; Aung Ko Ko Kyaw; Dinesh Kabra; Prashant Sonar

doi:10.3390/polym13172914

Structural Geometry Variation of 1,4-Naphthalene-Based Co-Polymers to Tune the Device Performance of PVK-Host-Based OLEDs

Polymers (Basel). 2021 Aug 30;13(17):2914. doi: 10.3390/polym13172914.

Authors

Qian Liu^{1

2}, Dhanashree Moghe³, Gopa Sardar³, Sergei Manzhos⁴, Steven E Bottle¹, Aung Ko Ko Kyaw², Dinesh Kabra³, Prashant Sonar¹

Affiliations

¹ Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia.
² Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
³ Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, India.
⁴ Centre Énergie Matériaux Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, QC J3X1S2, Canada.

Abstract

Blue-color-emitting organic semiconductors are of significance for organic light-emitting diodes (OLEDs). In this study, through Suzuki coupling polymerization, three 1,4-naphthalene-based copolymers-namely, PNP(1,4)-PT, PNP(1,4)-TF, and PNP(1,4)-ANT-were designed and synthesized. The variation of comonomers, phenothiazine (PT), triphenylamine substituted fluorene (TF), and anthanthrene (ANT), effectively tuned the emitting color and device performance of poly(9-vinyl carbazole) (PVK)-based OLEDs. Especially, the polymer PNP(1,4)-TF, bearing perpendicular aryl side groups, showed a most twisted structural geometry, which enabled an ultra-high thermal stability and a best performance with blue emitting in PVK-host-based OLEDs. Overall, in this work, we demonstrate a promising blue-color-emitting polymer through structural geometry manipulation.

Keywords: 1,4-naphthalene; anthanthrene; organic light-emitting diodes; phenothiazine; poly(9-vinyl carbazole); polymers; structural geometry; triphenylamine substituted fluorene.

Abstract

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