Hyperpolarized orthohydrogen (
- Home
- Search Results
- Page 1 of 1
Search for: All records
-
Total Resources2
- Resource Type
-
00020
- Availability
-
20
- Author / Contributor
- Filter by Author / Creator
-
-
Alam, Md Shahabuddin (2)
-
Brittin, Drew O. (2)
-
Chekmenev, Eduard Y. (2)
-
Deria, Pravas (2)
-
Goodson, Boyd M. (2)
-
Islam, Saiful (2)
-
Li, Xinlin (2)
-
#Tyler Phillips, Kenneth E. (0)
-
#Willis, Ciara (0)
-
& Abreu-Ramos, E. D. (0)
-
& Abramson, C. I. (0)
-
& Abreu-Ramos, E. D. (0)
-
& Adams, S.G. (0)
-
& Ahmed, K. (0)
-
& Ahmed, Khadija. (0)
-
& Akcil-Okan, O. (0)
-
& Akuom, D. (0)
-
& Aleven, V. (0)
-
& Andrews-Larson, C. (0)
-
& Archibald, J. (0)
-
- Filter by Editor
-
-
& Spizer, S. M. (0)
-
& . Spizer, S. (0)
-
& Ahn, J. (0)
-
& Bateiha, S. (0)
-
& Bosch, N. (0)
-
& Brennan K. (0)
-
& Brennan, K. (0)
-
& Chen, B. (0)
-
& Chen, Bodong (0)
-
& Drown, S. (0)
-
& Ferretti, F. (0)
-
& Higgins, A. (0)
-
& J. Peters (0)
-
& Kali, Y. (0)
-
& Ruiz-Arias, P.M. (0)
-
& S. Spitzer (0)
-
& Spitzer, S. (0)
-
& Spitzer, S.M. (0)
-
(submitted - in Review for IEEE ICASSP-2024) (0)
-
- (0)
-
-
Have feedback or suggestions for a way to improve these results?
!
Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher.
Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
-
Abstract o ‐H2) is a frequent product of parahydrogen‐based hyperpolarization approaches like signal amplification by reversible exchange (SABRE), where the hyperpolarizedo ‐H2signal is usually absorptive. We describe a novel manifestation of this effect wherein large antiphaseo ‐H2signals are observed, with1H enhancements up to ≈500‐fold (effective polarizationP H≈1.6 %). This anomalous effect is attained only when using an intact heterogeneous catalyst constructed using a metal–organic framework (MOF) and is qualitatively independent of substrate nature. This seemingly paradoxical observation is analogous to the “partial negative line” (PNL) effect recently explained in the context of Parahydrogen Induced Polarization (PHIP) by Ivanov and co‐workers. The two‐spin order of theo ‐H2resonance is manifested by a two‐fold higher Rabi frequency, and the lifetime of the antiphase HPo ‐H2resonance is extended by several‐fold. -
Alam, Md Shahabuddin ; Li, Xinlin ; Brittin, Drew O. ; Islam, Saiful ; Deria, Pravas ; Chekmenev, Eduard Y. ; Goodson, Boyd M. ( , Angewandte Chemie)
Abstract Hyperpolarized orthohydrogen (
o ‐H2) is a frequent product of parahydrogen‐based hyperpolarization approaches like signal amplification by reversible exchange (SABRE), where the hyperpolarizedo ‐H2signal is usually absorptive. We describe a novel manifestation of this effect wherein large antiphaseo ‐H2signals are observed, with1H enhancements up to ≈500‐fold (effective polarizationP H≈1.6 %). This anomalous effect is attained only when using an intact heterogeneous catalyst constructed using a metal–organic framework (MOF) and is qualitatively independent of substrate nature. This seemingly paradoxical observation is analogous to the “partial negative line” (PNL) effect recently explained in the context of Parahydrogen Induced Polarization (PHIP) by Ivanov and co‐workers. The two‐spin order of theo ‐H2resonance is manifested by a two‐fold higher Rabi frequency, and the lifetime of the antiphase HPo ‐H2resonance is extended by several‐fold.