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|Sureshraju Vegiraju and Chen Ming-Chou|
|National Central University, Taiwan|
|ScientificTracks Abstracts: J Material Sci Eng|
|New 3,3’-dithioalkyl-2,2’-bithiophene (SBT) based small molecular and polymeric semiconductors are synthesized by endcapping or co-polymerization with dithienothiophen-2-yl (DTT) units. Single crystal, molecular orbital computations, and optical/electrochemical data indicate that the SBT core is completely planar likely via S(alkyl)∙∙S(thiophene) intramolecular locks. Therefore, compared to semiconductors based on the conventional 3,3’-dialkyl-2,2’-bithiophene (BT), the resulting SBT systems are planar (torsional angle<1o) and highly π-conjugated. Charge transport was investigated for solution-sheared films in field-effect transistors demonstrating that SBT can enable good semiconducting materials with hole mobilities ranging from ~0.03 to 1.7 cm2 V-1 s-1. Transport difference within this family was rationalized by film morphology as accessed by grazing incidence X-ray diffraction (GIXRD) experiments.|
Sureshraju Vegiraju has his expertise in Synthetic Organic Chemistry. He develops conjugated organic materials for the applications in organic electronics and studies the opto- electronic properties.
Email: [email protected]
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