Structural geometry variation of 1,4-naphthalene-based co-polymers to tune the device performance of PVK-host-based OLEDs
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Moghe, Dhanashree
Sardar, Gopa
Manzhos, Sergei
Bottle, Steven E
Kyaw, Aung Ko Ko
Kabra, Dinesh
Sonar, Prashant
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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.
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Polymers
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13
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17
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© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
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Chemical sciences
Engineering
Science & Technology
Physical Sciences
Polymer Science
structural geometry
1,4-naphthalene
phenothiazine
triphenylamine substituted fluorene
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Liu, Q; Moghe, D; Sardar, G; Manzhos, S; Bottle, SE; Kyaw, AKK; Kabra, D; Sonar, P, Structural geometry variation of 1,4-naphthalene-based co-polymers to tune the device performance of PVK-host-based OLEDs , Polymers, 2021, 13 (17)