Synthesis and electrical properties of novel oligomer semiconductors for organic field-effect transistors (OFETs): Asymmetrically end-capped acene-heteroacene conjugated oligomers

被引:25
作者
Back, Jang Yeol [1 ,2 ]
Kim, Yebyeol [3 ]
An, Tae Kyu [3 ]
Kang, Moon Seong [4 ,5 ]
Kwon, Soon-Ki [1 ,2 ]
Park, Chan Eon [3 ]
Kim, Yun-Hi [4 ,5 ]
机构
[1] Gyeongsang Natl Univ, Sch Mat Sci & Engn, Jinju 660701, South Korea
[2] Gyeongsang Natl Univ, Res Inst Green Energy Convergence Technol REGET, Jinju 660701, South Korea
[3] Pohang Univ Sci & Technol, Polymer Res Inst, Dept Chem Engn, POSTECH Organ Elect Lab, Pohang 790784, South Korea
[4] Gyeongsang Natl Univ, Dept Chem, Jinju 660701, South Korea
[5] Gyeongsang Natl Univ, ERI, Jinju 660701, South Korea
关键词
Organic field-effect transistor; Small molecule semiconductor; Solubility; Conjugated core modification; End-group; THIN-FILM TRANSISTORS; HIGH-PERFORMANCE; MOLECULAR-STRUCTURE; DESIGN; MOBILITY;
D O I
10.1016/j.dyepig.2014.07.008
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Noble small molecules composed of an aromatic phenylene-trithiophene and naphthalene-trithiophene conjugated core were synthesized and examined for their property in p-type OFET devices. The phenylene and naphthalene moieties were combined with a trithiophene to introduce torsional structures into the conjugated core and improve the solubility compared with the solubility of the quaterthiophene core containing molecule. Although phenylene-trithiophene and naphthalene-trithiophene containing molecules showed lower mobilities (2.9 x 10(-3) and 1.04 x 10(-2) cm(2)/V, respectively) than quaterthiophene containing molecule (3.21 x 10(-2) cm(2)/V), they showed more film uniformity caused by improved solubility. The thermal stability, photochemical properties, and morphological characteristics were investigated using TGA, DSC, cyclic voltammetry, and XRD techniques. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:220 / 226
页数:7
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