New candidates composed of anthracene and 4-alkylethynylbenzene end-capped oligomers for OTFTs were synthesized under Sonogashira coupling reaction conditions. All oligomers were characterized by FT-IR, mass, UV-visible, and PL emission spectrum analyses, cyclic voltammetry (CV), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), $^1H$-NMR, and $^13}C$-NMR. Investigation of their physical properties showed that the oligomers had high oxidation potential and thermal stability. Thin films of DHPEAnt and DDPEAnt were characterized by spin coating them onto Si/$SiO_2$ to fabricate top-contact OTFTs. The devices prepared using DHPEAnt and DDPEAnt showed hole field-effect mobilities of $4.0\times}10^-3}cm^2$/Vs and $2.0\times}10^-3}cm^2$/Vs, respectively, for solution-processed OTFTs.
在 Sonogashira 偶联反应条件下合成了由
蒽和 4-烷基
乙炔基苯端帽低聚物组成的新的 OTFT 候选材料。通过傅立叶变换红外光谱、质量、紫外可见光和聚光发射光谱分析、循环伏安法(CV)、差示扫描量热法(
DSC)、热重分析(TGA)、
$^1H$-NMR 和
$^13}C$-NMR,对所有低聚物进行了表征。对其物理性质的研究表明,这些低聚物具有较高的氧化电位和热稳定性。通过在
硅/
$SiO_2$上旋涂
DHPEAnt 和 DD
PEAnt 薄膜,制备了顶接触 OTFT。使用
DHPEAnt和DD
PEAnt制备的器件显示,溶液加工的OTFT的空穴场效应迁移率分别为
$4.0\times}10^-3}cm^^2$/Vs和
$2.0\times}10^-3}cm^^2$/Vs。