2024-03-28T12:13:13Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00054058
2022-04-27T09:28:08Z
117:1221
117:500
3:62:5598:1648
Synthesis of conjugated polymers via direct C–H/C–Cl coupling reactions using a Pd/Cu binary catalytic system
桑原, 純平
クワバラ, ジュンペイ
KUWABARA, Junpei
神原, 貴樹
カンバラ, タカキ
KANBARA, Takaki
Tsuchida, Wataru
Guo, Shuyang
Hu, Ziwei
Yasuda, Takeshi
Direct arylation polycondensation is regarded as an efficient synthetic method for conjugated polymers. This methodology is difficult to apply to dichloroaryl monomers because of the low reactivity of the C–Cl bonds compared to that of the C–Br bonds in dibromoaryl monomers, which have been widely used in direct arylation polycondensation. In this research, direct arylation polycondensation of dichloroaryl monomers was achieved by the use of a Pd/Cu binary catalytic system. Optimisation of the molar ratio of the Pd and Cu catalyst resulted in the formation of high-molecular-weight polymers in good yields. Structural defects of the polymer at the terminal unit were minimised by logical choice of the monomer ratio on the basis of the reaction mechanism. The obtained polymer with relatively low structural defects showed a higher quantum efficiency of photoluminescence and electroluminescence than that of the polymer with irregular terminal structures.
journal article
Royal Society of Chemistry
2019-05
application/pdf
Polymer Chemistry
18
10
2298
2304
1759-9954
https://tsukuba.repo.nii.ac.jp/record/54058/files/PC_10-18.pdf
eng
10.1039/C9PY00232D