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Approaches to the preparation of carbon-based conductors.

机译:制备碳基导体的方法。

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Numerous investigations of the preparation of new organic conductors have been carried out since the first organic metal, TTF-TCNQ, was reported in 1973. The light weight, durability and versatility of organic conductors have certain advantages over conventional metals. However, the practical application of organic conductors is limited because of their physical properties. Most organic conductors are not soluble and can not be melted, so they can not be processed like conventional conductors. Some organic conductors are very brittle and unstable in the air which greatly inhibits their potential applications.;The purpose of this thesis is to discuss the attempts to prepare some new, processible organic conductors and interpret their physical properties. In chapter 1, we discuss the preparation of charge transfer salts of 4,4;In chapter 2, we report the synthesis of the charge transfer salts of TTF with 2,4,6-tricyanotriazine. These salts can be made in either powder form or needle form, depending on the solvents chosen for reaction. The room temperature conductivity for these salts is about 10;Attempts to prepare more processible conducting polymers of alkylbenzenes, alkoxybenzenes, and polycyclic hydrocarbons is described in chapter 3. Unfortunately, the side chains on the polymer backbone do not increase the solubility of these polymers in common organic solvents. However, the conductivities of these materials are relatively high and they are stable in the air.;In chapter 4, we report the conversion of hydrocarbons to pyrolytic carbon flakes and films under comparatively mild conditions. These carbon films and flakes are chemically inert, thermally stable, and highly reflective in appearance. The films and flakes are prepared at 800-900
机译:自1973年报道了第一种有机金属TTF-TCNQ以来,已经进行了许多有关制备新有机导体的研究。与传统金属相比,有机导体的轻质,耐用性和多功能性具有某些优势。然而,由于有机导体的物理性质,其实际应用受到限制。大多数有机导体不溶且不能熔化,因此不能像常规导体一样进行加工。一些有机导体在空气中非常脆且不稳定,这极大地限制了其潜在的应用前景。本论文的目的是讨论尝试制备一些新型的,可加工的有机导体并解释其物理性质的尝试。在第一章中,我们讨论了4,4的电荷转移盐的制备;在第二章中,我们报告了TTF与2,4,6-三氰基三嗪的电荷转移盐的合成。这些盐可以粉末形式或针状形式制成,具体取决于为反应选择的溶剂。这些盐的室温电导率约为10;在第3章中描述了尝试制备可加工性更高的烷基苯,烷氧基苯和多环烃的导电聚合物的方法。不幸的是,聚合物主链上的侧链并未增加这些聚合物在水中的溶解度。常见的有机溶剂。但是,这些材料的电导率相对较高,并且在空气中稳定。在第四章​​中,我们报告了在相对温和的条件下碳氢化合物向热解碳薄片和薄膜的转化。这些碳膜和薄片是化学惰性的,热稳定的,并且在外观上具有高度反射性。薄膜和薄片的制备温度为800-900

著录项

  • 作者

    Chang, Pao-Hwa.;

  • 作者单位

    Temple University.;

  • 授予单位 Temple University.;
  • 学科 Chemistry Organic.;Chemistry Physical.
  • 学位 Ph.D.
  • 年度 1989
  • 页码 114 p.
  • 总页数 114
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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