期刊
CHEMISTRY OF MATERIALS
卷 32, 期 3, 页码 1111-1119出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.9b04004
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资金
- National Research Foundation (NRF) of Korea - Ministry of Science and ICT, Korea [NRF-2019M3D1A1078296]
- Materials & Components Technology Development Program - Ministry of Trade, Industry & Energy (MOTIE), Korea [20006537]
- National Research Foundation (NRF) of Korea [2019R1A2C2085290, 2019R1A6A1A11044070]
- National Research Foundation of Korea [2019R1A2C2085290] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Replacement of toxic chlorinated solvents with eco- and human-friendly solvents is an important task for the successful implemention of next-generation polymer electronics technology. Herein, we designed and synthesized five aqueous-alcohol-processable conjugated copolymers by incorporating linear or branched oligo(ethylene glycol) side chains and systematically investigated their material and electronic properties. The resulting benzothiadiazole-based donor-acceptor alternating copolymers were well-soluble in both an ethanol/water mixed solvent and a chlorinated solvent, and their thin films showed distinct morphologies and crystalline characteristics that resulted from the self-assembling properties of the engineered side chains. Moreover, the copolymers showed excellent electrical characteristics with high hole mobilities of up to 0.1 cm(2) V-1 s(-1), which is among the highest values reported thus far for polymer field-effect transistors processed using truly eco- and human-friendly solvents without the use of any surfactants. These results clearly demonstrate the immense potential of branched oligo(ethylene glycol) side chains for application in green electronics.
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