High-Mobility Organic Transistors Based on Single-Crystalline Microribbons of Triisopropylsilylethynyl Pentacene via Solution-Phase Self-Assembly


  • This work was supported by the ERC Program (R11-2003-006-03005-0) of the MOST/KOSEF, a grant (F0004022) from the Information Display R&D Center under the 21st Century Frontier R&D Program of the MOCIE, the Core Research Program of POSTECH, the BK21 Program, and the Pohang Acceleratory Laboratory who provided the synchrotron radiation source at the 4C2, 3C2, and 8C1 beam lines used in this study. Supporting Information is available online from Wiley InterScience or from the author.


original image

Single-crystalline triisopropylsilylethynyl pentacene (TIPS-PEN) microribbons (see figure) with well-defined facets and unprecedented electrical characteristics, such as a field-effect mobility as high as 1.4 cm2 V–1 s–1, are fabricated through the self-assembly of individual TIPS-PEN molecules as a result of solvophobic interactions in the solution phase adopting preferential well-ordered intermolecular π–π stacking along the ribbon axis.