Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE

A novel diamine named (2,2′-bibenzoxazole)-5,5′-diamine (DBOA) and derived polyimides (PIs) were successfully synthesized. The rigid, linear, symmetrical molecular structure and the strong charge transfer complex (CTC) were considered to be the reasons for the improved molecular packing and enhanced...

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Detalles Bibliográficos
Autores principales: Chen, Haiquan, Dai, Fengna, Wang, Mengxia, Chen, Chunhai, Qian, Guangtao, Yu, Youhai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9031778/
https://www.ncbi.nlm.nih.gov/pubmed/35479694
http://dx.doi.org/10.1039/d1ra02218k
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author Chen, Haiquan
Dai, Fengna
Wang, Mengxia
Chen, Chunhai
Qian, Guangtao
Yu, Youhai
author_facet Chen, Haiquan
Dai, Fengna
Wang, Mengxia
Chen, Chunhai
Qian, Guangtao
Yu, Youhai
author_sort Chen, Haiquan
collection PubMed
description A novel diamine named (2,2′-bibenzoxazole)-5,5′-diamine (DBOA) and derived polyimides (PIs) were successfully synthesized. The rigid, linear, symmetrical molecular structure and the strong charge transfer complex (CTC) were considered to be the reasons for the improved molecular packing and enhanced thermal properties of the polymers. These DBOA based PIs exhibited a higher glass transition temperature (T(g)) and lower coefficient of thermal expansion (CTE) than traditional benzoxazole (BOA) based PIs. Meanwhile, the PI derived from DBOA and BPDA (3,3′,4,4′-biphenyltetracarboxylic dianhydride) exhibited high T(g) (395 °C) and low CTE (8.9 ppm per °C), and is expected to be applied in organic light-emitting diode (OLED) displays.
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spelling pubmed-90317782022-04-26 Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE Chen, Haiquan Dai, Fengna Wang, Mengxia Chen, Chunhai Qian, Guangtao Yu, Youhai RSC Adv Chemistry A novel diamine named (2,2′-bibenzoxazole)-5,5′-diamine (DBOA) and derived polyimides (PIs) were successfully synthesized. The rigid, linear, symmetrical molecular structure and the strong charge transfer complex (CTC) were considered to be the reasons for the improved molecular packing and enhanced thermal properties of the polymers. These DBOA based PIs exhibited a higher glass transition temperature (T(g)) and lower coefficient of thermal expansion (CTE) than traditional benzoxazole (BOA) based PIs. Meanwhile, the PI derived from DBOA and BPDA (3,3′,4,4′-biphenyltetracarboxylic dianhydride) exhibited high T(g) (395 °C) and low CTE (8.9 ppm per °C), and is expected to be applied in organic light-emitting diode (OLED) displays. The Royal Society of Chemistry 2021-05-07 /pmc/articles/PMC9031778/ /pubmed/35479694 http://dx.doi.org/10.1039/d1ra02218k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Chen, Haiquan
Dai, Fengna
Wang, Mengxia
Chen, Chunhai
Qian, Guangtao
Yu, Youhai
Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE
title Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE
title_full Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE
title_fullStr Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE
title_full_unstemmed Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE
title_short Polyimides containing a novel bisbenzoxazole with high T(g) and low CTE
title_sort polyimides containing a novel bisbenzoxazole with high t(g) and low cte
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9031778/
https://www.ncbi.nlm.nih.gov/pubmed/35479694
http://dx.doi.org/10.1039/d1ra02218k
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