Conjugated Polymer-Mediated Polymorphism of a High Performance, Small-Molecule Organic Semiconductor with Tuned Intermolecular Interactions, Enhanced Long-Range Order, and Charge Transport
作者： Jihua Chen , Ming Shao , Kai Xiao , Zhengran He , Dawen Li
DOI: 10.1021/CM403039Y
关键词: Organic semiconductor 、 Polymer blend 、 Pentacene 、 Conjugated system 、 Chemical physics 、 Polymer 、 Materials science 、 Semiconductor 、 Organic chemistry 、 Intermolecular force 、 Small molecule
摘要: We use 6,13-bis(triisopropylsilylethynyl)pentacene as a model small molecule organic semiconductor and two conjugated polymer additives to demonstrate polymer-mediated polymorphism of for the first time. The additives, used with slow solution crystallization approach, yield crystal structures that are not accessible by nonconjugated impart excellent long-range order. In both semiconductor/conjugated blends studied here, previously unreported polymorphs have been identified which also leads improved charge transport in absence external alignment. These results open up new exciting avenue manipulate unit cell structure, order, high performance, solution-processed, semiconductors.
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