9,10-Bis(phenylethynyl)anthracene-based organic semiconducting molecules for annealing-free thin film transistors

被引:18
作者
Bae, Suk Young [1 ]
Jung, Ki Hwa [1 ]
Hoang, Mai Ha [1 ]
Kim, Kyung Hwan [1 ]
Lee, Tae Wan [1 ]
Cho, Min Ju [1 ]
Jin, Jung-Il [1 ]
Lee, Dong Hoon [2 ]
Chung, Dae Sung [2 ]
Park, Chan Eon [2 ]
Choi, Dong Hoon [1 ]
机构
[1] Korea Univ, Dept Chem, Adv Mat Chem Res Ctr, Seoul 136701, South Korea
[2] Pohang Univ Sci & Technol, Dept Chem Engn, Organ Elect Lab, Pohang 790784, South Korea
关键词
X-shaped conjugated molecules; Anthracene; Absorption; Semiconductor; Mobility; Organic thin film transistor; FIELD-EFFECT TRANSISTORS; HIGH-PERFORMANCE; HIGH-MOBILITY; DERIVATIVES; TRANSPORT; OLIGOMERS; POLYMER;
D O I
10.1016/j.synthmet.2010.02.020
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
New anthracene-containing conjugated molecules have been synthesized through Stille coupling reaction. 2,6-Dibromoanthracene-9,10-dione was reacted with ethynylbenzene or 1-ethynyl-4-hexylbenzene to yield 2,6-dibromo-9,10-bis(phenylethynyl)anthracene 4 and 2,6-dibromo-9,10-bis((4-hexylphenyl) ethynyl)anthracene 5. Tributyl(5-hexylthiophen-2-yl)stannane was coupled through Stille reaction to generate two anthracene-based X-shaped molecules. They exhibit good solubility in common organic solvents and good self-film-forming properties. The semiconducting properties of the two molecules were evaluated in organic thin film transistors (OTFTs). Two conjugated molecules 7 and 8 exhibit fairly high charge carrier mobilities-as high as 0.010-0.014 cm(2) V-1 s(-1) (I-on/I-off=1.27 x 10(7) to 4.38 x 10(6)) without thermal annealing process. The X-shaped molecules result in easy crystallization and densely cover the surface of a dielectric layer. This helps in attaining good network interconnection for the carrier transport channel, which is responsible for the relatively high carrier mobility in solution-processed OTFT. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:1022 / 1029
页数:8
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