A long-term air-stable n-type organic semiconductor, 2,5-difluoro-1,4-phenylene-bis{2-[4-(trifluoromethyl)phenyl]acrylonitrile}, was synthesized by a high-yield simple procedure of Knoevenagel condensation with aldehyde and acetonitrile derivatives. A fabricated organic thin-film transistor (OTFT) using this compound exhibited good n-channel OTFT properties with a high electron mobility of 0.17 cm² V^–1 s^–1 and an on/off current ratio of 10⁶ under both vacuum and ambient air operation. After storage in ambient air for 1 year, a stored n-channel OTFT still shows good n-channel OTFT performance with little degradation in ambient air operation.

中文翻译：

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使用2,5-二氟-1,4-亚苯基-双{2- [4- [4-（三氟甲基）苯基]丙烯腈}的长期稳定的n沟道有机薄膜晶体管

通过高产率的简单方法合成了长期稳定的n型有机半导体2,5,2-二氟-1,4-亚苯基-双{2- [4-（4-（三氟甲基）苯基]丙烯腈} Knoevenagel与醛和乙腈衍生物的缩合反应。使用该化合物制成的有机薄膜晶体管（OTFT）具有良好的n沟道OTFT性能，在真空和环境下均具有0.17 cm ² V ^–1 s ^–1的高电子迁移率和10 ⁶的开/关电流比空中操作。在环境空气中存储1年后，存储的n通道OTFT仍显示良好的n通道的OTFT性能，在环境空气操作中几乎不降低性能。