Random styrenic copolymers with pendant pyrene moieties: Synthesis and applications in organic field‐effect transistor memory

Three random copolymers comprised pendant styrene and 4‐(1‐pyrenyl)‐styrene (PyS) moieties in different molar ratios (21.4:1 (P1), 3.9:1 (P2), and 1.4:1 (P3)) were synthesized and employed as charge storage polymeric electret for nonvolatile organic field‐effect transistor (OFET) memory application....

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Bibliographic Details
Published in:Journal of polymer science. Part A, Polymer chemistry Polymer chemistry, 2016-04, Vol.54 (7), p.910-917
Main Authors: Chung, Fei-Jan, Liu, Hsin-Yu, Jiang, Bo-Yi, He, Guan-Yu, Wang, Shi-Hao, Wu, Wen-Chung, Liu, Cheng-Liang
Format: Article
Language:English
Subjects:
Copolymers
Data storage
donor
electret
Electrets
Field effect transistors
Jewelry
memory
pendant copolymers
Semiconductor devices
Styrenes
transistor
Trapping
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Summary:Three random copolymers comprised pendant styrene and 4‐(1‐pyrenyl)‐styrene (PyS) moieties in different molar ratios (21.4:1 (P1), 3.9:1 (P2), and 1.4:1 (P3)) were synthesized and employed as charge storage polymeric electret for nonvolatile organic field‐effect transistor (OFET) memory application. The impact of varying the molar ratio in side‐chain electron‐donating pyrene moieties on the thermal, optical, photophysical, electrochemical, and electrical properties of the resulting pendant copolymers was evaluated to establish structure–property relationship. The OFET memory with P3 electret layer exhibits a largest memory window of 41.8 V, long retention time of 10⁴ s with memory ratio of 10⁵, and stable reversibility of at least 100 cycles due to enhanced field‐induced holes trapping ability from higher PyS composition ratio. Therefore, polymer electret with pendant functional moieties shows potential for use as trapping layer in OFET memory devices. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016, 54, 910–917
ISSN:0887-624X
1099-0518
DOI:10.1002/pola.27995