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| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
POLY.P-17 |
| Subject |
Diketopyrrolopyrrole-Based Conjugated Polymers bearing Branched Alkyl Ester-Labeled Side Chains and their Thin Film Transistors |
| Authors |
Hyung Jong Kim, Su Hong Park, Cheol Hun Jeong, Nayeon Kwon, Ji Hye Lee, Min Ju Cho*, Dong Hoon Choi*
Department of Chemistry, Korea University, Korea
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| Abstract |
Recently, many studies have focused on improving the carrier mobility in organic thin film transistors (OTFTs) by optimizing the size and bifurcation points of bulky branched alkyl chains on the conjugated backbone segments. However, it is difficult to prepare these alkyl groups because of their complicated synthesis routes. Additionally, there are limited studies related to the structures of DPP-based copolymers including alkyl side chains with polar functional units, which can induce other interactions besides van der walls interactions.
In this study, we synthesized six different DPP-based copolymers including DPP and bithiophene (BT) as electron-acceptor and donor backbone units, respectively, containing branched alkyl side chains, which were either directly coupled to the N-positions of DPP or separated by an alkyl ester group. It was found that the ester moieties form pseudo-hydrogen bonds with the nearest side chains in comparison to the alkyl-only system. The optimal DPP-based copolymer film showed the highest μ value of 2.30 cm2V-1s-1 in an OTFT, with a high on/off current ratio (Ion/Ioff >106). |
| E-mail |
cd204207@korea.ac.kr |
|
123rd General Meeting of the KCS