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Controlling the Uptake and Regulating the Release of Nitric Oxide in Microporous Solids
- Source :
- ACS Applied Materials & Interfaces; December 2017, Vol. 9 Issue: 50 p43520-43528, 9p
- Publication Year :
- 2017
-
Abstract
- Representative compounds from three classes of microporous solids, namely, metal–organic frameworks (MOFs), hybrid ultra-microporous materials (HUMs), and porous-organic polymers (POPs), were investigated for their nitric oxide gas uptake and release behavior. Low-pressure sorption studies indicated strong chemisorption of NO on the free amine groups decorating the MOF UiO-66-NH2when compared to its non-amine-functionalized parent. The HUMs demonstrated reversible physisorption within the low-pressure regime, but interestingly in one case there was evidence for chemisorption following pressurization with NO at 10 bar. Significant release of chemisorbed NO from the UiO-66-NH2and one of the HUMs was triggered by addition of acid to the medium, a pH change from 7.4 to 5.4 being sufficient to trigger NO release. An imidazole-based POP exhibited chemisorption of NO at high pressure wherein the ring basicity facilitated both NO uptake and spontaneous release upon contact with the aqueous release medium.
Details
- Language :
- English
- ISSN :
- 19448244
- Volume :
- 9
- Issue :
- 50
- Database :
- Supplemental Index
- Journal :
- ACS Applied Materials & Interfaces
- Publication Type :
- Periodical
- Accession number :
- ejs44229837
- Full Text :
- https://doi.org/10.1021/acsami.7b15095