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

摘要

There has been significant interest in the fabrication of 1D single-crystalline building blocks from π-conjugated organic molecules for use in high-performance supramolecular electronics. Control over the single-crystalline supramolecular self-assembly of π-conjugated organic molecules provides great opportunities to fine-tune the molecular ordering of 1D nano- or microstructured building blocks grown by strong π-π interactions, and thus to optimize their electrical properties for applications in organic field-effect transistors (OFETs). Obtaining high-quality single crystals with π-conjugated organic molecules through solution processing is required more than obtaining them through complex vacuum processes. Some research has recently shown that self-assembly through strong π-π stacking is an effective approach to producing well-defined single-crystalline nano- or microstructures for 71-conjugated organic molecules in the solution phase.