Chain Length Effect of Dialkoxynaphthalene End-Capped Divinylbenzene for OTFT

Bulletin of the Korean chemical society

Soon-Ki Kwon¹  Yun-Hi Kim¹  Sung Chul Shin¹  Mi Hye Yi¹  Ran Kim¹  Hui-Jun Yun¹ 

关键词: Organic semiconductor;    TFT (thin film transistor);    Hole mobility;    Chain length;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The new organic semiconductors which are composed of divinylbenzene core unit and alkoxynaphthalene on both sides, 1,4-bis-2-(6-octyloxy)naphthalen-2-ylvinylbenzene (BONVB), 1,4-bis-2-(6-decyloxy)naphthalen- 2-ylvinylbenzene (BDNVB) and 1,4-bis-2-(6-dodecyloxy)naphthalen-2-ylvinylbenzene (BDDNVB) were synthesized by Wittig reaction. The structures of obtained BONVB, BDNVB and BDDNVB were confirmed by FT-IR and mass spectroscopy. UV-absorption of thin film showed H-aggregates and J-aggregates due to closely packed structure between adjacent molecules. The characterization of vacuum-evaporated films by Xray diffraction (XRD) and atomic force microscopy (AFM) showed that the chain length of alkoxy group affects the crystallinity and morphology. BONVB with octyloxy group showed the mobility of 0.011 cm2/V·s, on/off ratio of 1.31 × 105, and a subthreshold slope of 0.93 V.

【 授权许可】

Unknown