Switching phase separation mode by varying the hydrophobicity of polymer additives in solution-processed semiconducting small-molecule/polymer blends
Switching phase separation mode by varying the hydrophobicity of polymer additives in solution-processed semiconducting small-molecule/polymer blends
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DOI：
10.1063/1.4820588
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发表时间：
2013-09-09
影响因子：
4
通讯作者：
Chen, Jihua
中科院分区：
文献类型：
--
作者：
He, Zhengran;Li, Dawen;Chen, Jihua
横向和垂直相分离在下一代有机和混合电子器件的性能中起着关键作用。在这里展示了一种方法，通过简单地改变聚丙烯酸酯聚合物组分的烷基长度，在半导体6，13-双（三异丙基甲硅烷基乙炔基）并五苯（TIPSE并五苯）/聚合物共混物膜中在横向和垂直相分离之间切换。相分离模式取决于小分子TIPSE戊烯和聚合物添加剂之间的分子间相互作用。具有主导垂直相分离的共混物膜表现出显著的有机薄膜晶体管的平均迁移率和性能一致性的增强。(C)2013 AIP Publishing LLC.
Lateral and vertical phase separations play critical roles in the performance of the next-generation organic and hybrid electronic devices. A method is demonstrated here to switch between lateral and vertical phase separations in semiconducting 6,13-bis(triisopropylsilylethynyl)pentacene (TIPSE pentacene)/polymer blend films by simply varying the alkyl length of the polyacrylate polymer component. The phase separation modes depend on intermolecular interactions between small molecule TIPSE pentancene and polymer additives. The blend film with a dominant vertical phase separation exhibits a significant enhancement in average mobility and performance consistency of organic thin-film transistors. (C) 2013 AIP Publishing LLC.