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基于MOF纳米粒子的ChemFET离子传感器

Douglas H Banning¹, Audrey M Davenport¹, Natalie M Lakanen¹

¹Department of Chemistry & Biochemistry and Materials Science Institute, University of Oregon, 97403-1253, Eugene, OR, USA.

|November 11, 2024

概括

金属有机框架纳米粒子表现出霍夫迈斯特行为,显示用于传感应用的离子选择性. 这一发现强调了基于孔的相互作用,用于设计先进的MOF技术.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
超分子化学超分子化学

背景情况:

金属有机框架 (MOF) 是具有显著内部表面积的多孔材料.
金属有机框架 (nanoMOFs) 的纳米颗粒的外部表面化学在很大程度上尚未被探索.
了解纳米MOF外表面对于开发新应用至关重要.

研究的目的:

为了研究Cu(1,2,3-三酸盐) 2 (Cu(TA) 2) 纳米粒子与外部表面的离子相互作用.
探索Cu(TA) 2纳米MOF作为化学场效应晶体管 (ChemFET) 离子传感器的潜力.
阐明在基于纳米MOF的传感中控制离子选择性的原则.

主要方法:

合成的Cu ((1,2,3-三酸盐) 2 (Cu ((TA) 2)) 纳米粒子.
研究了与纳米MOF外表面的离子相互作用,观察了类似霍夫迈斯特的行为.
在离子传感的ChemFET设备中制造和测试Cu(TA) 2纳米MOF.

主要成果:

观察到与Cu(TA) 2纳米MOF的离子相互作用模仿了在蛋白质和宏分子中观察到的霍夫迈斯特效应.
证明了基于Cu(TA) 2纳米MOF的ChemFET传感器具有离子选择性.
发现传感器灵敏度遵循霍夫迈斯特趋势,对酸盐,化物和酸盐离子的灵敏度最高.

结论:

纳米MOF的外部表面化学是关键的,并表现出霍夫迈斯特行为.
Cu(TA) 2纳米MOF是有效的离子传感器,其选择性是由超分子相互作用驱动的.
基于毛孔的超分子相互作用是设计基于MOF的传感技术的关键,而不是局部相互作用.

关键词:

的识别方式在ChemFET的基础上,ChemFET可以霍夫迈斯特 (Hofmeister) 是一个高官.金属有机框架的框架.传感器传感器传感器

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