Chromophore Fluorination Enhances Crystallization and Stability of Soluble Anthradithiophene Semiconductors
作者:Sankar Subramanian、Sung Kyu Park、Sean R. Parkin、Vitaly Podzorov、Thomas N. Jackson、John E. Anthony
DOI:10.1021/ja073235k
日期:2008.3.1
We report dramatic improvements in the stability and crystallinity arising from partial fluorination of soluble anthradithiophene derivatives. These fluorinated materials still behave as p-type semiconductors but with dramatic increases in thermal and photostability compared to the non-fluorinated derivatives. The triethylsilyl-substituted material forms highly crystalline films even from spincast solutions, leading to devices with maximum hole mobility greater than 1.0 cm(2)N s. In contrast, the triisopropylsilyl derivative forms large, high-quality crystals that could serve as the substrate for transistor fabrication. For this compound, mobility as high as 0.1 cm(2)N S Was measured on the freestanding crystal.
Structural and Electronic Properties of Crystalline, Isomerically Pure Anthradithiophene Derivatives
作者:Rawad K. Hallani、Karl J. Thorley、Yaochuan Mei、Sean R. Parkin、Oana D. Jurchescu、John E. Anthony
DOI:10.1002/adfm.201502440
日期:2016.4
materials are typically synthesized as an inseparable mixture of syn and antiisomers. Recent syntheses of pure syn anthradithiophenes have shown no improvement in performance for the more homogeneous system, but similar studies on the pure antiisomer have not been reported. In this work, a simple protocol is described to prepare the pure antiisomer of fluorinated, functionalized anthradithiophenes, and perform