期刊
POLYMER BULLETIN
卷 78, 期 2, 页码 965-979出版社
SPRINGER
DOI: 10.1007/s00289-020-03146-y
关键词
Oxidative coupling polymerization; 2-Naphthol; Triarylamine; Regiocontrolled polymer
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea government (MOTIE) [20191510301070]
- Korea Institute of Energy Technology Evaluation & Planning (KETEP) [20191510301070] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A novel regiocontrolled triarylamine-based polymer with 2-naphthol units was synthesized via oxidative coupling polymerization, showing good solubility and thermal stability, suggesting promising applications in optoelectronic devices.
Redox-active polytriarylamine with hydroxyl groups is a useful material for optoelectronic applications, especially in the solution-processable multilayer devices. A novel regiocontrolled triarylamine-based polymer, poly(di-5-naphthyl-2-ol)phenylamine, with 2-naphthol units was synthesized via oxidative coupling polymerization. Polymerization in tetrahydrofuran using a Cu-amine complex oxidant under O-2 atmosphere produced polymers with number-averaged molecular weights as high as 11,300 g mol(-1). The structure of the polymer was characterized by H-1 and C-13 NMR spectroscopy, showing that the oxidative coupling polymerization occurred at the outer ortho position of the 2-naphthols, preserving the hydroxyl groups. The polymer exhibited good solubility in polar aprotic solvents, with a high thermal stability of 446 degrees C that corresponded to 5% weight loss. The UV-vis absorption of the polymer was similar to that of DNPA, indicating that the kinked-structured polymer hindered the formation of charge-transfer complexes. These results suggest promising applications of the developed polymer in optoelectronic devices.
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