期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 12, 页码 5472-5475出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja300122r
关键词
-
资金
- JASRI/SPring-8
- JSPS [21.4405]
- [20350030]
- [22108526]
- Grants-in-Aid for Scientific Research [23245012, 22750053, 09J04405, 22108526] Funding Source: KAKEN
We controlled the hydrophilicity of metal-organic frameworks (MOFs) to achieve high proton conductivity and high adsorption of water under low humidity conditions, by employing novel class of MOFs, {NR3(CH2COOH)}[MCr(ox)(3)]center dot nH(2)O (abbreviated as R-MCr, where R = Me (methyl), Et (ethyl), or Bu (n-butyl), and M = Mn or Fe): Me-FeCr, Et-MnCr, Bu-MnCr, and Bu-FeCr. The cationic components have a carboxyl group that functions as the proton carrier. The hydrophilicity of the cationic ions was tuned by the NR3 residue to decrease with increasing bulkiness of the residue: {NMe3(CH2COOH)}(+) > {NEt3(CH2COOH)}(+) > {NBu3(CH2COOH)}(+). The proton conduction of the MOFs increased with increasing hydrophilicity of the cationic ions. The most hydrophilic sample, Me-FeCr, adsorbed a large number of water molecules and showed a high proton conductivity of similar to 10(-4) S cm(-1), even at a low humidity of 65% relative humidity (RH), at ambient temperature. Notably, this is the highest conductivity among the previously reported proton-conducting MOFs that operate under low RH conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据