Synthesis and Transistor Properties of Asymmetric Oligothiophenes: Relationship between Molecular Structure and Device Performance

被引：39

作者：

An, Tae Kyu ^{[1
]}

Jang, Sang Hun ^{[1
,2
]}

Kim, Seul-Ong ^{[3
]}

Jang, Jaeyoung

Hwang, Jihun ^{[1
]}

Cha, Hyojung ^{[1
]}

Noh, Young Ri ^{[2
]}

Yoon, Soon Byung ^{[2
]}

Yoon, Yong Jin ^{[2
]}

Kim, Lae Ho ^{[1
]}

Chung, Dae Sung ^{[4
]}

Kwon, Soon-Ki ^{[3
]}

Kim, Yun-Hi ^{[2
]}

Lee, Sang-Gyeong ^{[2
]}

Park, Chan Eon ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, POSTECH Organ Elect Lab, Polymer Res Inst, Pohang 790784, South Korea

[2] Gyeongsang Natl Univ, RINS, Grad Sch Mol Mat & Nanochem, Dept Chem, Jinju 660701, South Korea

[3] Gyeongsang Natl Univ, Res Inst Green Energy Convergence Technol REGET, Sch Mat Sci & Engn, Jinju 660701, South Korea

[4] Chung Ang Univ, Sch Chem Engn & Mat Sci, Seoul 156756, South Korea

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2013年 / 19卷 / 42期

基金：

新加坡国家研究基金会;

关键词：

aggregation; oligothiophenes; semiconductors; thin films; transistors; THIN-FILM TRANSISTORS; FIELD-EFFECT TRANSISTORS; ORGANIC SEMICONDUCTORS; END; MOBILITY; DESIGN; QUATERTHIOPHENES; DERIVATIVES; STABILITY; PRECURSOR;

D O I：

10.1002/chem.201302588

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of three thiophene-naphthalene-based asymmetric oligomers5-decyl-2,2:5,2:5,2-quaterthiophene (DtT), 5-decyl-5-(naphthalen-2-yl)-2,2:5,2-terthiophene (D3TN), and 5-(4-decylphenyl)-5-(naphthalen-2-yl)-2,2-bithiophene (DP2TN)was synthesized by Suzuki cross-coupling reactions. The long alkyl side chains improved both the solubility of the oligomers in solvents and their tendency to self-assemble. UV/Vis absorption measurements suggested that DtT, D3TN, and DP2TN form 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 3.3x10(-3)cm(2)V(-1)s(-1) for DtT, 1.6x10(-2)cm(2)V(-1)s(-1) for D3TN, and 3.7x10(-2)cm(2)V(-1)s(-1) for DP2TN. The differences in transistor performances were attributed to the degree of overlap and the morphological differences determined by the molecular structures.

引用

页码：14052 / 14060

页数：9

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