A Close View of the Organic Linker in a MOF: Structural Insights from a Combined 1H NMR Relaxometry and Computational Investigation Full article
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PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084 |
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| Output data | Year: 2020, Volume: 22, Number: 27, Pages: 15222-15230 Pages count : 9 DOI: 10.1039/d0cp01863e | ||||||
| Tags | TEREPHTHALATE PHENYLENES; ROTATIONAL-DYNAMICS; HEAT TRANSFORMATION; FRAMEWORKS; N-14; RELAXATION; MOBILITY; SEPARATION; STORAGE | ||||||
| Authors |
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| Affiliations |
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Funding (4)
| 1 | Russian Foundation for Basic Research | 18-29-04033 |
| 2 | European Cooperation in Science and Technology | CA15209 |
| 3 | Tuscany Region | 2014-2020 FELIX project |
| 4 | BENEFICENTIA Stiftung |
Abstract:
The organic linker in a metal organic framework (MOF) affects its adsorption behavior and performance, and its structure and dynamics play a role in the modulation of the adsorption properties. In this work, the combination of 1H nuclear magnetic resonance (NMR) longitudinal relaxometry and theoretical calculations allowed details of the structure and dynamics of the organic linker in the NH2-MIL-125 MOF to be obtained. In particular, fast field cycling (FFC) NMR, applied here for the first time on MOFs, was used to disclose the dynamics of the amino group and its electronic environment through the analysis of the 14N quadrupole relaxation peaks, observed in the frequency interval 0.5–5 MHz, at different temperatures from 25 to 110 °C. The line width of the peaks allowed a lower boundary on the rotational correlation time of the N–H bonds to be set, whereas relevant changes in the amplitudes were interpreted in terms of a change in the orientation of the 14N averaged electric field gradient tensor. The experimental findings were complemented by quantum chemistry calculations and classical molecular dynamics simulations.
Cite:
Pizzanelli S.
, Monti S.
, Gordeeva L.G.
, Solovyeva M.V.
, Freni A.
, Forte C.
A Close View of the Organic Linker in a MOF: Structural Insights from a Combined 1H NMR Relaxometry and Computational Investigation
PCCP: Physical Chemistry Chemical Physics. 2020.
V.22. N27. P.15222-15230. DOI: 10.1039/d0cp01863e
WOS
Scopus
РИНЦ
AN
PMID
OpenAlex
A Close View of the Organic Linker in a MOF: Structural Insights from a Combined 1H NMR Relaxometry and Computational Investigation
PCCP: Physical Chemistry Chemical Physics. 2020.
V.22. N27. P.15222-15230. DOI: 10.1039/d0cp01863e
WOS
Scopus
РИНЦ
AN
PMID
OpenAlex
Files:
Full text from publisher
Dates:
| Submitted: | Apr 6, 2020 |
| Accepted: | Jun 17, 2020 |
| Published online: | Jun 17, 2020 |
| Published print: | Jul 21, 2020 |
Identifiers:
| Web of science: | WOS:000549894000005 |
| Scopus: | 2-s2.0-85088246709 |
| Elibrary: | 45401345 |
| Chemical Abstracts: | 2020:1179533 |
| PMID: | 32601632 |
| OpenAlex: | W3036639434 |