Novel Thiophene鈥揚henylene鈥揟hiophene Fused Bislactam-Based Donor鈥揂cceptor Type Conjugate Polymers: Synthesis by Direct Arylation and Properties

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• 作者：Mithrabinda K. Poduval ; Paula Mayorga Burrezo ; Juan Casado ; J. Teodomiro L贸pez Navarrete ; Roc铆o Ponce Ortiz ; Tae-Hyun Kim
• 刊名：Macromolecules
• 出版年：2013
• 出版时间：December 10, 2013
• 年：2013
• 卷：46
• 期：23
• 页码：9220-9230
• 全文大小：660K
• 年卷期：v.46,no.23(December 10, 2013)
• ISSN：1520-5835

文摘

Three new donor鈥揳cceptor copolymers based on thiophene鈥損henylene鈥搕hiophene fused bislactam and various donors (3,4-dodecylthiophene, 4,4鈥?didodecyl-2,2鈥?bithiophene, and ethylenedioxythiophene) were synthesized, characterized, and used in field-effect transistors. Polycondensation was performed using nonactivated thiophene derivatives by employing palladium-catalyzed direct arylation under phosphine-free conditions. This method is superior to traditional cross-coupling polymerization because it requires fewer synthetic operations and does not employ toxic organometallic intermediates. Regioselective polymers can also be generated by using 尾-substituted thiophene derivatives. The studied polymers were tested in a bottom gate top contact thin film transistor (OTFT) architecture. The best electronic performance was shown by polymer P3, with enhanced 蟺-conjugation due to the appearance of intramolecular attractive interactions.