Synthesis and Transistor Properties of Asymmetric Oligothiophenes: Relationship between Molecular Structure and Device Performance
作者:Tae Kyu An、Sang Hun Jang、Seul-Ong Kim、Jaeyoung Jang、Jihun Hwang、Hyojung Cha、Young Ri Noh、Soon Byung Yoon、Yong Jin Yoon、Lae Ho Kim、Dae Sung Chung、Soon-Ki Kwon、Yun-Hi Kim、Sang-Gyeong Lee、Chan Eon Park
DOI:10.1002/chem.201302588
日期:2013.10.11
H‐type aggregates with a face‐to‐face packing structure. In addition, the three oligomers were found to adopt vertically aligned crystalline structures in films deposited on substrates, as revealed by grazing‐incidence wide‐angle X‐ray scattering. These oligomers were used as the active layers of p‐type organic field‐effect transistors, and the resulting devices showed field‐effect mobilities of 3.3×10−3 cm2 V−1 s−1
一系列三个基于噻吩-萘的不对称低聚物—5-癸基-2,2′:5′,2′′:5′′,2′′′-四噻吩(DtT),5癸基-5′′ (萘-2-基)-2,2':5',2''-噻吩(D3TN)和5-(4-癸基苯基)-5'-(萘-2-基)-2,2'- Bithiophene(DP2TN)-是通过Suzuki交叉偶联反应合成的。烷基长链提高了低聚物在溶剂中的溶解度和自组装趋势。UV / Vis吸收测量表明DtT,D3TN和DP2TN形成了具有面对面堆积结构的H型聚集体。此外,发现这三种低聚物在沉积在基材上的薄膜中采用垂直排列的晶体结构,这通过掠入射广角X射线散射可以看出。这些低聚物被用作p型有机场效应晶体管的有源层,DtT为-3 cm 2 V -1 s -1,D3TN为1.6×10 -2 cm 2 V -1 s -1,DP2TN为3.7×10 -2 cm 2 V -1 s -1。晶体管性
Symmetric Long Alkyl Chain End-Capped Anthracene Derivatives for Solution-Processed Organic Thin-Film Transistors
作者:Sang Hun Jang、Dae Sung Chung、Jin Young An、II Kang、Hyunjin Kim、Chan Eon Park、Yun-Hi Kim、Soon-Ki Kwon、Sang-Gyeong Lee
DOI:10.1166/jnn.2012.5909
日期:2012.5.1
Three new anthracene derivatives, 2,6-bis(4-decylphenyl)anthracene (DDPAnt), 2-decyl-5-(2-(5-decylthiophen-2-yl)anthracen-6-yl)thiophene (DDTAnt), and 2,6-bis(4-decyloxy phenyl) anthracene (DDPXAnt) were synthesized by Suzuki cross-coupling reaction. The obtained oligomers were characterized by 1H NMR, FT-IR, Mass, UV-visible spectroscopy, cyclovotammetry, differencial scanning calorimetry, and thermogravimetric analysis. The thermal studies show that these oligomers are stable up to 400 °C. The solution processed OTFTs were fabricated using synthesized oligomers by spin-coating and drop casting processes on Si/SiO2. OTFTs based on DDPAnt showed the mobility of 7.6 × 10−3 cm2/Vs and on/off ratio of 105.