在多孔协调聚合物中对质子导电性的广泛控制
Akihito Shigematsu1, Teppei Yamada, Hiroshi Kitagawa
1Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
Journal of the American Chemical Society
|February 3, 2011
概括
在多孔协调聚合物中的质子导电性可以通过改变连接体功能组来调整. 具体来说,Fe ((OH) ((bdc- ((COOH) ((2)) 具有优越的质子导电性,这是由于其碳基团和低的pK ((a)).
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 纳米技术 纳米技术
背景情况:
- 多孔协调聚合物 (PCP) 是具有可调节结构的先进材料.
- 材料中的质子导电性对于燃料电池等能源应用至关重要.
- 在PCP中控制质子运输仍然是一个重大挑战.
研究的目的:
- 为了研究同结构多孔协调聚合物的质子导电性M(OH) ((bdc-R).
- 探索连接体功能组,pK(a) 和质子导电性之间的关系.
- 确定增强PCP中的质子运输的策略.
主要方法:
- 同结构的多孔协调聚合物M(OH) ((bdc-R) 的合成,具有不同的功能组 (R = H,NH2),OH, (COOH) 2).
- 在潮湿条件下测量质子导电性.
- 对pK (a) 的相关性分析,质子导电性和激活能量.
主要成果:
- 在pK(a),质子导电性和激活能量之间观察到良好的相关性.
- 铁 (Fe) (bdc) (COOH) (2)),具有碳基团和最低的pK (a),显示出最高的质子导电性.
- 这种材料还在研究系列中表现出最低的激活能量.
结论:
- 连接体功能组置换有效地控制了PCP在这个同结构系列中的质子导电性.
- 碳组的存在和低的pK (a) 是高质子导电性的关键因素.
- 这项研究为设计各种应用的质子导电材料提供了新的途径.
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