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Synthesis and characterization of polyelectrolytes based on benzotriazole backbone
Shi, Yueqin; Kong, Yaguang; Song, Lihui; Zhang, Jun; Ji, Zhenguo; Ge, Ziyi
2018
发表期刊COLLOID AND POLYMER SCIENCE
卷号296期号:1页码:43109
摘要Suzuki coupling and Ni-catalyzed Yamamoto polymerizations were used to prepare conjugated polyelectrolytes based on n-type benzothiadiazole and benzotriazole unit backbone via a one-step synthesis, which started from their monomers with charged pendant ends. PBTBTz-SO3Na synthesized by Suzuki coupling polymerization showed a high M (n) value of 94 kDa, starting from the bilateral brominated benzotriazole and diboronic ester benzothiadiazole. The PBTBTz-SO3Na revealed aggregation phenomenon at the status of diluted solutions at optical absorption spectroscopy results. Dynamic light scattering (DLS) measurement provided evidence of negative solvatochromic effects of PBTBTz-SO3Na chains in solvents with lower polarity. While, PBTz-PyrBr, PBTz-TMABr, and PBTz-SO3Na which synthesized from Ni-catalyzed Yamamoto polymerizations of bilateral brominated benzotriazole units revealed higher molecular weight with PBTz-PyrBr, M (n) = 112 kDa; PBTz-TMABr, M (n) = 157 kDa; and PBTz-SO3Na, M (n) = 172 kDa, respectively. The ionic pendant groups of monomers have influence on the molecular weight of polymer based on benzotriazole backbone. The optical absorption spectroscopy and DLS measurements presented the negative solvatochromic effects of cationic-CPEs, PBTz-PyrBr, and PBTz-TMABr. Moreover, the UV-vis absorption of PBTz-TMABr displayed higher wavelength of solution (0.0167 mg/mL) than that of film, which was coated from its solution with concentration of 5 mg/mL. These studies displayed insights into the role of pendant ionic functionalities on the molecular weight and optoelectronic properties of the CPEs, which may find application in optoelectronic devices.
关键词Polymer Solar-cells Gap Conjugated Polyelectrolytes Side-chains Layer Diketopyrrolopyrrole Benzothiadiazole Derivatives Copolymers Acceptor Donor
学科领域Polymer Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16938
专题2018专题
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GB/T 7714
Shi, Yueqin,Kong, Yaguang,Song, Lihui,et al. Synthesis and characterization of polyelectrolytes based on benzotriazole backbone[J]. COLLOID AND POLYMER SCIENCE,2018,296(1):43109.
APA Shi, Yueqin,Kong, Yaguang,Song, Lihui,Zhang, Jun,Ji, Zhenguo,&Ge, Ziyi.(2018).Synthesis and characterization of polyelectrolytes based on benzotriazole backbone.COLLOID AND POLYMER SCIENCE,296(1),43109.
MLA Shi, Yueqin,et al."Synthesis and characterization of polyelectrolytes based on benzotriazole backbone".COLLOID AND POLYMER SCIENCE 296.1(2018):43109.
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