基于宿主-客客策略的含有γ-环极的金属-有机框架的表轴生长
Dengke Shen1,2, Gang Wang1, Zhichang Liu1,3
1Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.
Journal of the American Chemical Society
|August 10, 2018
概括
在玻璃上生长的循环基金属有机框架 (CD-MOF) 膜可使质子导电率提高300倍. 这些CD-MOF膜可以在电化学设备中快速,可逆地检测二氧化碳.
科学领域:
- 材料科学
- 纳米技术
- 化学工程
背景情况:
- 金属有机框架 (MOF) 为各种应用提供可调节的特性.
- 基于环氧的MOF (CD-MOF) 可以从天然产品中提取.
- 长生长提供了有序的薄膜,具有增强的功能.
研究的目的:
- 在修改过的玻璃基板上培养CD-MOF膜的方法.
- 研究这些CD-MOF薄膜在二氧化碳传感的电化学装置中的应用.
- 与使用晶体粉末的设备相比,评估CD-MOF薄膜设备的性能提升.
主要方法:
- 用g-cyclodextrin (γ-CD) 自组装单层 (SAM) 修饰的玻璃基板上的CD-MOF薄膜的表层生长.
- 使用CD-MOF薄膜进行二氧化碳传感的电化学装置的制造.
- 膜形态,方向和装置性能的表征,包括质子导电率和CO2反应.
主要成果:
- 连续的多晶CD-MOF薄膜与外平面方向 (厚度∼2μm) 已成功生长.
- 与基于粉末的设备相比,基于CD-MOF薄膜的设备显示了质子导电率的300倍增强.
- 基于薄膜的装置表现出快速 (3秒响应,10秒恢复) 和可逆的CO2传感器,电导率降低了50倍.
结论:
- CD-MOF的表轴生长提供了高导电性和功能性薄膜的途径.
- 主机-客户策略使CD-MOF在各种表面,包括微粒的多功能制造成为可能.
- 基于CD-MOF薄膜的电化学设备显示出有效和灵敏的二氧化碳检测的巨大潜力.
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