期刊
CHEMISTRY OF MATERIALS
卷 24, 期 14, 页码 2752-2756出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm3009573
关键词
one-dimensional microtubular architectures; single-crystal self-assembly; soluble pentacene; pi-pi interaction; high field-effect mobility
资金
- Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Education, Science and Technology, Korea [2011-0031628]
We report a facile but very effective solution phase method for the self-assembly of one-dimensional (1D) single-crystal organic microtubes with hollow tetragonal structures using triisopropylsilylethynyl pentacene (TIPS_PEN). We found that the self-assembled TIPS_PEN microtubes are formed by self-etching of microsolid by residual toluene solvent. The self-etching commences at the ends of the solid rectangular microribbons and then continues toward the interiors along their length axes. The resultant microtubes showed completely well-defined single-crystalline nature. The transistor devices based on individual microtube yielded a hip field-effect mobility of 1.73 cm(2)/V s and an on/off ratio of similar to 10(6), which are among the best values reported up to date for solution-processed micro-TFTs with organic single crystals. We believe that these well-defined microtubular structures of an organic semiconductor will be useful in the fields of p/nheterojunction photovoltaics, optical waveguides, and biological research.
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