Development of Solution Processable Thioalkylated Fused Thiophenes Derivatives for Organic Optoelectronic Applications

• Main Authors: Bo-Chun Yu, 游博鈞
• Other Authors: Ming-Chou Chen
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/52076723966043053951

碩士 === 國立中央大學 === 化學學系 === 105 === New small molecules based on BSTT, DSDTT, and SBT(T,T) cores have been developed for organic thin film transistors (OTFTs). Two p-type and one n-type materials were synthesized and characterized. The highly planar DSDTT core was confirmed by single crystal structure and DSDTTQ-8 (3) exhibits the mobility up to 0.01 cm2/V-1s-1. Three new regio-specific ((H,H), (T,T), and (H,T)) SBT-based polymers were developed which bearing thioalkyl chains (C20H41) in different positions of the SBT core. Furthermore, five new FFBT-SBT based polymers were developed where the SBT units were connected with different thioalkyl chains or alkyl chains. pffBT-SBT(T,T)-20 (4) exhibits a PCE up to 6.4% and pffBT-S16-C16 (7) exhibits a high PCE up to 9.43% in OPV. The optimization of FFBT-based polymer is still in progress. The optical and electrochemical (HOMO and LUMO) properties of these materials were characterized by UV-vis and DPV. Thermal properties were investigated by TGA.