Enantiospecific Response in Cross-Polarization Solid-State Nuclear Magnetic Resonance of Optically Active Metal Organic Frameworks
(2020) In Journal of the American Chemical Society 142(42). p.17989-17996- Abstract
We report herein on a NMR-based enantiospecific response for a family of optically active metal-organic frameworks. Cross-polarization of the 1H-13C couple was performed, and the intensities of the 13C nuclei NMR signals were measured to be different for the two enantiomers. In a direct-pulse experiment, which prevents cross-polarization, the intensity difference of the 13C NMR signals of the two nanostructured enantiomers vanished. This result is due to changes of the nuclear spin relaxation times due to the electron spin spatial asymmetry induced by chemical bond polarization involving a chiral center. These experiments put forward on firm ground that the chiral-induced spin selectivity effect, which induces chemical bond polarization... (More)
We report herein on a NMR-based enantiospecific response for a family of optically active metal-organic frameworks. Cross-polarization of the 1H-13C couple was performed, and the intensities of the 13C nuclei NMR signals were measured to be different for the two enantiomers. In a direct-pulse experiment, which prevents cross-polarization, the intensity difference of the 13C NMR signals of the two nanostructured enantiomers vanished. This result is due to changes of the nuclear spin relaxation times due to the electron spin spatial asymmetry induced by chemical bond polarization involving a chiral center. These experiments put forward on firm ground that the chiral-induced spin selectivity effect, which induces chemical bond polarization in the J-coupling, is the mechanism responsible for the enantiospecific response. The implications of this finding for the theory of this molecular electron spin polarization effect and the development of quantum biosensing and quantum storage devices are discussed.
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- author
- San Sebastian, Eider ; Cepeda, Javier ; Huizi-Rayo, Uxua ; Terenzi, Alessio ; Finkelstein-Shapiro, Daniel LU ; Padro, Daniel ; Santos, Jose Ignacio ; Matxain, Jon M. ; Ugalde, Jesus M. and Mujica, Vladimiro
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the American Chemical Society
- volume
- 142
- issue
- 42
- pages
- 8 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85094220294
- pmid:32941015
- ISSN
- 1520-5126
- DOI
- 10.1021/jacs.0c04537
- language
- English
- LU publication?
- yes
- id
- 5616a547-522f-4fff-957a-da1de5f9c221
- date added to LUP
- 2020-11-06 07:59:41
- date last changed
- 2024-09-19 08:30:09
@article{5616a547-522f-4fff-957a-da1de5f9c221, abstract = {{<p>We report herein on a NMR-based enantiospecific response for a family of optically active metal-organic frameworks. Cross-polarization of the 1H-13C couple was performed, and the intensities of the 13C nuclei NMR signals were measured to be different for the two enantiomers. In a direct-pulse experiment, which prevents cross-polarization, the intensity difference of the 13C NMR signals of the two nanostructured enantiomers vanished. This result is due to changes of the nuclear spin relaxation times due to the electron spin spatial asymmetry induced by chemical bond polarization involving a chiral center. These experiments put forward on firm ground that the chiral-induced spin selectivity effect, which induces chemical bond polarization in the J-coupling, is the mechanism responsible for the enantiospecific response. The implications of this finding for the theory of this molecular electron spin polarization effect and the development of quantum biosensing and quantum storage devices are discussed.</p>}}, author = {{San Sebastian, Eider and Cepeda, Javier and Huizi-Rayo, Uxua and Terenzi, Alessio and Finkelstein-Shapiro, Daniel and Padro, Daniel and Santos, Jose Ignacio and Matxain, Jon M. and Ugalde, Jesus M. and Mujica, Vladimiro}}, issn = {{1520-5126}}, language = {{eng}}, number = {{42}}, pages = {{17989--17996}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Journal of the American Chemical Society}}, title = {{Enantiospecific Response in Cross-Polarization Solid-State Nuclear Magnetic Resonance of Optically Active Metal Organic Frameworks}}, url = {{http://dx.doi.org/10.1021/jacs.0c04537}}, doi = {{10.1021/jacs.0c04537}}, volume = {{142}}, year = {{2020}}, }