Intramolecular locked dithioalkyl bithiophene based semiconductors for high performance organic field effect transistors

2^nd International Conference and Exhibition on Materials Science and Chemistry

July 13-14, 2017 Berlin, Germany

Sureshraju Vegiraju and Chen Ming-Chou

National Central University, Taiwan

Scientific Tracks Abstracts: J Material Sci Eng

Abstract :

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 �?-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.

Biography :

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: suresh.vegiraju@gmail.com