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Electrochemical preparation and physicochemical study of polymers obtained from carbazole and N-((methoxycarbonyl)methyl)carbazole
Synthetic Metals ( IF 4.4 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.synthmet.2020.116584
S. Lakard , E. Contal , K. Mougin , C. Magnenet , B. Lakard

Abstract The polymerization of carbazole (Cz) and N-((methoxycarbonyl)methyl)carbazole (CzE) was carried out by electrochemical oxidation in acetonitrile solution. Different feed ratios of monomers were used to deposit polymer thin films with different compositions and study the influence of the ratio of monomers on the electrochemical, morphological, mechanical and adhesive properties of the polymer films. The electrochemical oxidation led to the deposition of a polymer film whatever the feed ratio but the thickness of the film increased with the portion of unmodified carbazole. On the contrary, the composition of the monomer mixture had a low influence on the AFM adhesion forces between the AFM tip and the polymer film. Depending on the feed monomer ratio, the morphology was either globular or columnar (when the portion of CzE was comprised between 10% and 70%). The stiffness of the polymer films was also found to be strongly dependent on the feed ratio since it varied from 2 to 115 GPa depending on the monomer ratio. The polymer films prepared from the ratios 90:10 and 70:30 in Cz:CzE monomer solutions were found to be the most interesting ones since they led to thick and conducting polymer films with a good adhesion and a low stiffness. Moreover, these coatings were uniform and exhibited an original columnar structure.

中文翻译:

咔唑与N-((甲氧基羰基)甲基)咔唑聚合物的电化学制备及理化研究

摘要 咔唑(Cz)和N-((甲氧基羰基)甲基)咔唑(CzE)在乙腈溶液中通过电化学氧化进行聚合。采用不同的单体进料比沉积不同组成的聚合物薄膜,研究单体配比对聚合物薄膜电化学、形貌、力学和粘合性能的影响。无论进料比如何,电化学氧化都会导致聚合物膜的沉积,但膜的厚度随着未改性咔唑的部分而增加。相反,单体混合物的组成对 AFM 尖端和聚合物膜之间的 AFM 粘附力的影响很小。根据进料单体比例,形态是球状或柱状(当 CzE 的部分包含在 10% 和 70% 之间时)。还发现聚合物薄膜的刚度强烈依赖于进料比,因为它根据单体比从 2 到 115 GPa 不等。发现在 Cz:CzE 单体溶液中以 90:10 和 70:30 的比例制备的聚合物薄膜是最有趣的,因为它们导致厚且导电的聚合物薄膜具有良好的附着力和低刚度。此外,这些涂层均匀并呈现出原始的柱状结构。发现 CzE 单体溶液是最有趣的溶液,因为它们会产生具有良好附着力和低刚度的厚导电聚合物薄膜。此外,这些涂层均匀并呈现出原始的柱状结构。发现 CzE 单体溶液是最有趣的溶液,因为它们会产生具有良好附着力和低刚度的厚导电聚合物薄膜。此外,这些涂层均匀并呈现出原始的柱状结构。
更新日期:2020-12-01
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