Effect of semiconductor polymer backbone structures and side-chain parameters on the facile separation of semiconducting single-walled carbon nanotubes from as-synthesized mixtures
- 주제(키워드) SWNT separation , sc-SWNT , Semiconductor polymer , Side chain , Backbone structure
- 주제(기타) Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter
- 설명문(일반) [Lee, Dennis T.; Park, Geonhee; Kim, Woo-Jae] Gachon Univ, Dept Chem & Biol Engn, Seongnam 13120, Gyeonggi Do, South Korea; [Lee, Dennis T.] North Carolina State Univ, Dept Chem & Biomol Engn, 911 Partners Way, Raleigh, NC 27695 USA; [Chung, Jong Won; Cho, Yeonchoo; Shin, Hyeon-Jin] Samsung Adv Inst Technol, Suwon 443803, South Korea; [Kim, Yun-Tae; Lee, Chang Young] UNIST, Sch Energy & Chem Engn, Ulsan 44919, South Korea; [Yoo, Pil J.] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, Gyeonggi Do, South Korea; [Han, Jae-Hee] Gachon Univ, Dept Energy IT, Seongnam 13120, Gyeonggi Do, South Korea
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS
- 발행기관 ELSEVIER SCIENCE BV
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000160547
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.apsusc.2017.06.137
초록/요약
Semiconducting single-walled carbon nanotubes (SWNTs) show promise as core materials for next generation solar cells and nanoelectronic devices. However, most commercial SWNT production methods generate mixtures of metallic SWNTs (m-SWNTs) and semiconducting SWNT (sc-SWNTs). Therefore, sc-SWNTs must be separated from their original mixtures before use. In this study, we investigated a polymer-based, noncovalent sc-SWNT separation approach, which is simple to perform and does not disrupt the electrical properties of the SWNTs, thus improving the performance of the corresponding sc-SWNT-based applications. By systematically investigating the effect that different structural features of the semiconductor polymer have on the separation of sc-SWNTs, we discovered that the length and configuration of the alkyl side chains and the rigidity of the backbone structure exert significant effects on the efficiency of sc-SWNT separation. We also found that electron transfer between the semiconductor polymers and sc-SWNTs is strongly affected by their energy-level alignment, which can be tailored by controlling the donor-acceptor configuration in the polymer backbone structures. Among the polymers investigated, the highly planar P8T2Z-C12 semiconductor polymer showed the best sc-SWNT separation efficiency and unprecedentedly strong electronic interaction with the sc-SWNTs, which is important for improving their performance in applications. (C) 2017 Elsevier B.V. All rights reserved.
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