Results 51 to 60 of about 2,750 (239)
, 2023 The aim of this thesis is to study the metal-free activation of parahydrogen and the subsequent effects of parahydrogen-induced polarization (PHIP). PHIP is a nuclear spin hyperpolarization method that dramatically increases the sensitivity in NMR by ...
Zakharov, Danila O.
core +1 more source
Parahydrogen Hyperpolarization Allows Direct NMR Detection of α‐Amino Acids in Complex (Bio)mixtures
Angewandte Chemie, 2021 The scope of non‐hydrogenative parahydrogen hyperpolarization (nhPHIP) techniques has been expanding over the last years, with the continuous addition of important classes of substrates.
Lisanne Sellies +4 more
semanticscholar +1 more source
Parahydrogen-induced polarization with a metal-free P–P biradicaloid [PDF]
, 2019 Metal-free H₂ activations are unusual but interesting for catalytic transformations, particularly in parahydrogen-based nuclear spin hyperpolarization techniques.
Igor V. Koptyug +7 more
core +3 more sources
Adsorption of parahydrogen on graphene [PDF]
Physical Review B, 2018 Replaced with published ...
Dusseault, Marisa, Boninsegni, Massimo
openaire +2 more sources
, 2022 Hyperpolarized (i.e., polarized far beyond the thermal equilibrium) nuclear spins can result in radiofrequency amplification by stimulated emission of radiation (RASER) effect.
Oleg G., Salnikov +6 more
core +1 more source
Hyperpolarization of Nitrile Compounds Using Signal Amplification by Reversible Exchange
Molecules, 2020 Signal Amplification by Reversible Exchange (SABRE), a hyperpolarization technique, has been harnessed as a powerful tool to achieve useful hyperpolarized materials by polarization transfer from parahydrogen.
Sarah Kim +6 more
doaj +1 more source
Analytical Chemistry, 2021 Due to the extensive chemical, physical and biomedical applications of parahydrogen, the need exists for the development of highly enriched parahydrogen in a robust and efficient manner.
Shiraz Nantogma +3 more
semanticscholar +1 more source
Chinese Journal of Magnetic Resonance, 2022 The selective hydrogenation of 1, 3-butadiene over Pd-Sn/Al2O3 bimetallic catalysts was investigated by heterogeneous parahydrogen-induced polarization (PHIP). A series of Pd1-Snx/Al2O3 bimetallic catalysts with different Pd/Sn ratios were synthesized by
Han HU, Wei-yu WANG, Jun XU, Feng DENG
doaj +1 more source
Symmetry Constraints on Spin Order Transfer in Parahydrogen-Induced Polarization (PHIP) [PDF]
Symmetry, 2021 It is well known that the association of parahydrogen (pH2) with an unsaturated molecule or a transient metalorganic complex can enhance the intensity of NMR signals; the effect is known as parahydrogen-induced polarization (PHIP). During recent decades,
Andrey N. Pravdivtsev +3 more
semanticscholar +1 more source
Parahydrogen-Induced Magnetization of Jovian Planets?
, 2020 A long-overdue hypothesis on the origin of the magnetic field of Jovian planets is presented. It is proposed that rapid parahydrogen ↔ orthohydrogen exchange catalyzed by aerosol clouds of parahydrogen-rich planetary layers renders a hyperpolarized ...
Eduard Y. Chekmenev (1290312) +1 more
core +1 more source