Magnetic-field cycling instrumentation for dynamic nuclear polarization-nuclear magnetic resonance using photoexcited triplets

Kagawa, Akinori; Negoro, Makoto; Takeda, Kazuyuki; Kitagawa, Masahiro
April 2009
Review of Scientific Instruments;Apr2009, Vol. 80 Issue 4, p044705
Academic Journal
To advance static solid-state NMR with hyperpolarized nuclear spins, a system has been developed enabling dynamic nuclear polarization (DNP) using electron spins in the photoexcited triplet state with X-band microwave apparatus, followed by static solid-state nuclear magnetic resonance (NMR) experiments using the polarized nuclear-spin system with a goniometer. In order to perform the DNP and NMR procedures in different magnetic fields, the DNP system and the NMR system are spatially separated, between which the sample can be shuttled while its orientation is controlled in a reproducible fashion. We demonstrate that the system developed in this work is operational for solid-state NMR with hyperpolarized nuclear-spin systems in static organic materials, and also discuss the application of our system.


Related Articles

  • Spin Decoherence in Quantum Dots. Bhaktavatsala Rao, D. D.; Ravishankar, V.; Subrahmanyam, V. // AIP Conference Proceedings;2006, Vol. 864 Issue 1, p104 

    The decoherence of a spin-1/2 particle (qubit) interacting with a nuclear spin bath in quantum dots has been studied using an isotropic Heisenberg model. An effective magnetic field (a feature of unitary evolution) and an effective temperature (a non-unitary feature) describe the effective...

  • One-electron versus electron–electron interaction contributions to the spin–spin coupling mechanism in nuclear magnetic resonance spectroscopy: Analysis of basic electronic effects. Gräfenstein, Jürgen; Cremer, Dieter // Journal of Chemical Physics;12/22/2004, Vol. 121 Issue 24, p12217 

    For the first time, the nuclear magnetic resonance (NMR) spin–spin coupling mechanism is decomposed into one-electron and electron–electron interaction contributions to demonstrate that spin-information transport between different orbitals is not exclusively an electron-exchange...

  • Towards uniform enhancement in solid-state cross polarization magnetic angle spinning NMR: A scheme incorporating cross polarization with rotational resonance. Guangjin Hou; Feng Deng; Chaohui Ye; Shangwu Ding // Journal of Chemical Physics;6/21/2006, Vol. 124 Issue 23, p234512 

    A recently proposed experimental scheme for achieving uniform cross polarization enhancement of low-γ nuclear species in solids under magic angle spinning, termed quantitative cross polarization (QUCP) [Hou et al., Chem. Phys. Lett. 421, 356 (2006)], is described, supported with comprehensive...

  • Considerations For The Optimal Polarization of 3He Targets. Brown, Brielin // AIP Conference Proceedings;8/4/2009, Vol. 1149 Issue 1, p895 

    The main characteristics of a polarized 3He are maximum polarization, spin-up time, and cell lifetime. New hybrid K-Rb cells have higher polarization and shorter spin-up times. However, operating conditions also have a large impact on the operational characteristics of a cell. Here, hybrid K-Rb...

  • Coherent transfer of hyperpolarization in coupled spin systems at variable magnetic field. Ivanov, Konstantin L.; Yurkovskaya, Alexandra V.; Vieth, Hans-Martin // Journal of Chemical Physics;4/21/2008, Vol. 128 Issue 15, p154701 

    A general theoretical approach to coherent transfer of hyperpolarization (HP) among coupled spins is suggested and applied to field-cycling experiments where the polarized spin system is prepared at low magnetic field while observation is performed at high field. The formalism works for an...

  • Dissolution dynamic nuclear polarization of deuterated molecules enhanced by cross-polarization. Kurzbach, Dennis; Weber, Emmanuelle M. M.; Jhajharia, Aditya; Cousin, Samuel F.; Sadet, Aude; Marhabaie, Sina; Canet, Estel; Birlirakis, Nicolas; Milani, Jonas; Jannin, Sami; Eshchenko, Dmitry; Hassan, Alia; Melzi, Roberto; Luetolf, Stephan; Sacher, Marco; Rossire, Marc; Kempf, James; Lohman, Joost A. B.; Weller, Matthias; Bodenhausen, Geoffrey // Journal of Chemical Physics;2016, Vol. 145 Issue 19, p194203-1 

    We present novel means to hyperpolarize deuterium nuclei in 13CD2 groups at cryogenic temperatures. The method is based on cross-polarization from 1H to 13C and does not require any radio-frequency fields applied to the deuterium nuclei. After rapid dissolution, a new class of longlived spin...

  • The heart of matter. Lee, Andrew // Engineer (00137758);6/11/2004, Vol. 293 Issue 7653, p14 

    No abstract available.

  • Design and performance of a microsecond time-resolved photo-chemically induced dynamic nuclear polarization add-on for a high-field nuclear magnetic resonance spectrometer. Kuprov, I.; Goez, M.; Abbott, P. A.; Hore, P. J. // Review of Scientific Instruments;Aug2005, Vol. 76 Issue 8, p084103 

    We describe the design and operation of microsecond time-resolved photo-chemically induced dynamic nuclear polarization hardware, designed to go with a commercial 600 MHz nuclear magnetic resonance (NMR) spectrometer. A frequency-tripled neodymium-doped yttrium/aluminum garnet (Nd:YAG) laser is...

  • Optically pumped nuclear magnetic resonance of semiconductors. Hayes, Sophia E.; Mui, Stacy; Ramaswamy, Kannan // Journal of Chemical Physics;2/7/2008, Vol. 128 Issue 5, p052203 

    Optically pumped NMR (OPNMR) of direct gap and indirect gap semiconductors has been an area of active research interest, motivated by both basic science and technological perspectives. Proposals to enhance and to spatially localize nuclear polarization have stimulated interest in this area....


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics