https://scholars.lib.ntu.edu.tw/handle/123456789/576893
標題: | Atom-economical synthesis and characterization of poly(Oxindolidene thienylene vinylene) based on aldol polycondensation reaction | 作者: | Sato S Lin P.-S Wu W.-N Liu C.-L Higashihara T. CHENG-LIANG LIU |
公開日期: | 2020 | 卷: | 10 | 期: | 4 | 來源出版物: | Catalysts | 摘要: | It is known that π-conjugated polymers can be easily synthesized using monomers which possess metals or halogen atoms as well as transition-metal catalysts. However, in the polymer materials synthesized by such reactions, small amounts of halogens and transition-metal-catalysts remain, often negatively affecting their optoelectronic device performances. Herein, we report a new polycondensation method based on the aldol condensation reaction utilizing the intramolecular resonance effect of the anionic monomer through π-conjugation. We have designed a novel AB type monomer to synthesize the semiconducting poly(oxindolidene thienylene vinylene) (POTV) using the proposed system. Indeed, the polymerization readily proceeded by adding 5-nitro-2-thiophenecarbaldehyde as an initiator after the α-proton abstraction of the oxindole group by the reaction of the monomer precursor with lithium hexamethylsilazide (LiHMDS)/12-crown-4. As a result, the objective POTV with Mn = 3700 and ?M = 1.47 could be obtained with a good yield (65%). In addition, an organic field effect transistor (OFET) was based on POTV exhibited p-type characteristics, with a hole mobility of 2.24 × 10?4 cm2 V?1 s?1. ? 2020 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083007227&doi=10.3390%2fcatal10040364&partnerID=40&md5=2654320e9ab70b7682fe3a34c8f3b259 https://scholars.lib.ntu.edu.tw/handle/123456789/576893 |
ISSN: | 20734344 | DOI: | 10.3390/catal10040364 |
顯示於: | 材料科學與工程學系 |
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