Abstract
Three derivatives of thieno[3,2-b]thiophene end-capped with phenyl units have been synthesized and characterized by MALDI TOF mass spectroscopy, elemental analysis, UV-vis absorption spectroscopy and thermogravimetric analysis (TGA). All compounds were prepared using Pd-catalyzed Stille or Suzuki coupling reactions. Optical measurements and thermal analysis revealed that these compounds are promising candidates for p-type organic semiconductor applications.
Highlights
In recent years, there has been growing interest in conjugated organic materials due to their interesting electronic properties [1,2,3,4,5,6,7,8]
Many studies on small molecules have been focused on pentacene, which has been used as an effective p-type semiconductor for organic field-effect transistors (OFETs) [9,10,11]
High stability as well as high charge carrier mobility of the OFET is desirable. It was an aim of the present work to design and synthesize some new organic materials with good air and thermal stability as semiconductors, using a straightforward synthetic route
Summary
There has been growing interest in conjugated organic materials due to their interesting electronic properties [1,2,3,4,5,6,7,8]. Many studies on small molecules have been focused on pentacene, which has been used as an effective p-type semiconductor for organic field-effect transistors (OFETs) [9,10,11]. Devices based on oligothiophenes have poor air stability and show rapid device-performance. High stability as well as high charge carrier mobility of the OFET is desirable. It was an aim of the present work to design and synthesize some new organic materials with good air and thermal stability as semiconductors, using a straightforward synthetic route. We report the synthesis and characterization of a series of small compounds based on thieno[3,2-b]thiophene for thin-film trasistor (TFT) applications
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