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Published on: July 23, 2016
Metal organic frameworks as nitric oxide catalysts.
Jacqueline L Harding1, Melissa M Reynolds
1Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
Journal of the American Chemical Society
|January 24, 2012
Summary
Metal-organic frameworks (MOFs) catalyze nitric oxide (NO) production from S-nitrosocysteine. This reusable Cu(3)(BTC)(2) MOF catalyst achieves high yields of NO, demonstrating its potential in catalytic applications.
Area of Science:
- Materials Science
- Catalysis
- Biochemistry
Background:
- Metal-organic frameworks (MOFs) offer tunable structures for catalytic applications.
- Nitric oxide (NO) is a crucial signaling molecule with diverse biological roles.
- Efficient and controlled NO generation is essential for research and therapeutic applications.
Purpose of the Study:
- To investigate the catalytic potential of a specific MOF, Cu(3)(BTC)(2), for nitric oxide (NO) production.
- To evaluate the MOF's efficacy in generating NO from a biologically relevant substrate, S-nitrosocysteine (CysNO).
- To assess the reusability and structural integrity of the MOF catalyst after reaction.
Main Methods:
- Utilized chemiluminescence to monitor real-time NO evolution.
- Employed S-nitrosocysteine (CysNO) and cysteine (CysH) as substrates for NO generation.
- Characterized the MOF catalyst's structure using powder X-ray diffraction (pXRD) and attenuated total reflectance infrared spectroscopy (ATR-IR).
Main Results:
- The Cu(3)(BTC)(2) MOF efficiently catalyzed NO generation from CysNO.
- Nearly 100% theoretical yield of NO was achieved with catalytic turnover of MOF-Cu(II) sites.
- Control experiments confirmed the necessity of the MOF for NO production.
- The MOF catalyst demonstrated reusability over multiple reaction cycles without loss of activity.
- Structural analysis confirmed the MOF remained intact post-reaction.
Conclusions:
- Cu(3)(BTC)(2) MOFs are effective catalysts for NO production from CysNO.
- The MOF exhibits high catalytic efficiency, yield, and reusability.
- The catalyst's structural stability ensures its suitability for repeated use in NO generation.
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