@article {1476, title = {Optically detected cross-relaxation spectroscopy of electron spins in diamonds}, journal = {Nature Communication}, volume = {5}, year = {2014}, month = {06/2014}, pages = {4135}, doi = {10.1038/ncomms5135}, author = {Wang, H. J. and Shin, C. S. and Seltzer, S. J. and Avalos, C. E. and Pines, A. and Bajaj, V. S.} } @article {1477, title = {Optically-detected nuclear quadrupolar interaction of 14N in nitrogen-vacancy centers in diamond}, journal = {Physical Review B}, volume = {89}, year = {2014}, pages = {205202}, doi = {10.1103/PhysRevB.89.205202}, author = {Shin, C. S. and Butler, M. C. and Wang, H. J. and Avalos, C. E. and Seltzer, S. J. and Liu, R. and Pines, A. and Bajaj, V.S.} } @article {268, title = {Optical detection of NMR J-spectra at zero magnetic field}, journal = {Journal of Magnetic Resonance}, volume = {199}, year = {2009}, note = {J Magn Reson456YJTimes Cited:19Cited References Count:26}, month = {Jul}, pages = {25-29}, abstract = {

Scalar couplings of the form JI(1) . I(2) between nuclei impart valuable information about molecular structure to nuclear magnetic-resonance spectra. Here we demonstrate direct detection of J-spectra due to both heteronuclear and homonuclear J-coupling in a zero-field environment where the Zeeman interaction is completely absent. We show that characteristic functional groups exhibit distinct spectra with straightforward interpretation for chemical identification. Detection is performed with a microfabricated optical atomic magnetometer, providing high sensitivity to samples of microliter volumes. We obtain 0.1 Hz linewidths and measure scalar-coupling parameters with 4-mHz statistical uncertainty. We anticipate that the technique described here will provide a new modality for high-precision\" J spectroscopy\" using small samples oil microchip devices for multiplexed Screening, assaying, and sample identification in chemistry and biomedicine. (C) 2009 Elsevier Inc. All rights reserved.

}, keywords = {cells}, isbn = {1090-7807}, doi = {Doi 10.1016/J.Jmr.2009.03.008}, url = {://WOS:000266890300004}, author = {Ledbetter, M. P. and Crawford, C. W. and Pines, A. and Wemmer, D. E. and Knappe, S. and Kitching, J. and Budker, D.} } @article {299, title = {Optimization of xenon biosensors for detection of protein interactions}, journal = {Chembiochem}, volume = {7}, year = {2006}, note = {Chembiochem003SDTimes Cited:39Cited References Count:25}, month = {Jan}, pages = {65-73}, abstract = {

Hyperpolarized Xe-129 NMR spectroscopy can detect the presence of specific low-concentration biomolecular analytes by means of a xenon biosensor that consists of a water-soluble, targeted cryptophane-A cage that encapsulates the xenon. In this work, we use the prototypical biotinylated xenon biosensor to determine the relationship between the molecular composition of the xenon biosensor and the characteristics of protein-bound resonances. The effects of diastereomer overlap, dipole-dipole coupling, chemical-shift anisotropy, xenon exchange, and biosensor conformotional exchange on the protein-bound biosensor signal were assessed. It was found that an optimal protein-bound biosensor signal can be obtained by minimizing the number of biosensor diastereomers and using a flexible linker of appropriate length. Both the line width and sensitivity of chemical shift to protein binding of the xenon biosensor were found to be inversely proportional to linker length.

}, keywords = {complexes}, isbn = {1439-4227}, doi = {Doi 10.1002/Cbic.200500327}, url = {://WOS:000234701000012}, author = {Lowery, T. J. and Garcia, S. and Chavez, L. and Ruiz, E. J. and Wu, T. and Brotin, T. and Dutasta, J. P. and King, D. S. and Schultz, P. G. and Pines, A. and Wemmer, D. E.} } @article {410, title = {Optical magnetic resonance imaging of Rb vapor in low magnetic fields}, journal = {Physics Letters A}, volume = {226}, year = {1997}, note = {Phys Lett AWf939Times Cited:12Cited References Count:19}, month = {Feb 10}, pages = {69-74}, abstract = {

By applying magnetic field gradients to alkali vapor cells, images of the spatial distribution of spin-polarized Rb atoms were obtained. Optical pumping is used to produce precessing spin-polarization in the ground state. Detection of the coherent spin transients is performed in the time-domain by a single optical probe beam covering the whole sample cell. Spatial resolution of better than 1 mm has been achieved by a projection-reconstruction method.

}, keywords = {xe-129}, isbn = {0375-9601}, doi = {Doi 10.1016/S0375-9601(96)00927-9}, url = {://WOS:A1997WF93900012}, author = {Skalla, J. and Wackerle, G. and Mehring, M. and Pines, A.} } @article {440, title = {Orientation and Motion of Tetrahydrofuran in Graphite-Intercalation Compounds - Proton Nmr-Studies of Cs(Thf)(1.3)C-24 and K(Thf)(2.5)C-24}, journal = {Journal of Physical Chemistry}, volume = {99}, year = {1995}, note = {J Phys Chem-UsRg562Times Cited:5Cited References Count:31}, month = {Jun 29}, pages = {10565-10572}, abstract = {

The orientation and motion of tetrahydrofuran (THF) in the ternary graphite intercalation compounds Cs-(THF)(1.3)C-24 and K(THF)(2.5)C-24 have been studied by proton NMR. Simulations of the NMR spectra indicate that the THF molecules in CS(THF)(1.3)C-24 have their mean planes oriented parallel to the layers of the host lattice, while the THF molecules in K(THF)(2.5)C-24 have their mean planes oriented at an angle between 50 degrees and 75 degrees from the graphite layers. The proton NMR spectra of both compounds show evidence that the THF molecules rotate about the normal to the graphite layers and confirm X-ray diffraction studies showing a degree of orientational disorder in the samples, corresponding to a mosaic spread in the graphite layer orientation. The conformation of the intercalated THF was studied by simulating the experimental NMR spectra using models for the conformational motion of THF. Simulations indicate that the conformation of intercalated THF is different than gas or liquid phase THF, which has been found to have a ring puckering amplitude of 0.38-0.44 Angstrom and to undergo nearly free pseudorotation through a series of conformations. Best agreement between simulated and experimental NMR spectra of Cs(THF)(1.3)C-24 was Obtained with THF interconverting between two conformations of C-s symmetry and a puckering amplitude of 0.30 Angstrom. Free or slightly hindered pseudorotation of THF (observed in liquid or gaseous THF) in this compound produces simulated spectra that differ significantly from the experimental spectra. Simulated proton NMR spectra of K(THF)(2.5)C-24 using conformations of C-s symmetry or free or slightly hindered pseudorotation of THF do not fit the experimental spectra sufficiently well to allow distinction between the conformational motions or to exclude other possible motions.

}, keywords = {system}, isbn = {0022-3654}, doi = {Doi 10.1021/J100026a020}, url = {://WOS:A1995RG56200020}, author = {Schmidt, C. and Rosen, M. E. and Caplan, D. F. and Pines, A. and Quinton, M. F.} } @article {554, title = {O-17 Nmr in Solids by Dynamic-Angle Spinning and Double Rotation}, journal = {Nature}, volume = {339}, year = {1989}, note = {NatureU4451Times Cited:177Cited References Count:15}, month = {May 4}, pages = {42-43}, isbn = {0028-0836}, doi = {Doi 10.1038/339042a0}, url = {://WOS:A1989U445100054}, author = {Chmelka, B. F. and Mueller, K. T. and Pines, A. and Stebbins, J. and Wu, Y. and Zwanziger, J. W.} } @article {558, title = {Observation of Molecular-Reorientation in Ice by Proton and Deuterium Magnetic-Resonance}, journal = {Journal of the American Chemical Society}, volume = {110}, year = {1988}, note = {J Am Chem SocP7649Times Cited:80Cited References Count:16}, month = {Aug 17}, pages = {5668-5671}, isbn = {0002-7863}, doi = {Doi 10.1021/Ja00225a013}, url = {://WOS:A1988P764900013}, author = {Wittebort, R. J. and Usha, M. G. and Ruben, D. J. and Wemmer, D. E. and Pines, A.} } @article {578, title = {Observation of Spin Diffusion in Zero-Field Magnetic-Resonance}, journal = {Physical Review Letters}, volume = {59}, year = {1987}, note = {Phys Rev LettH9613Times Cited:4Cited References Count:15}, month = {Jul 6}, pages = {106-108}, isbn = {0031-9007}, doi = {Doi 10.1103/Physrevlett.59.106}, url = {://WOS:A1987H961300028}, author = {Suter, D. and Jarvie, T. P. and Sun, B. and Pines, A.} } @article {681, title = {Operator Formalism for Double Quantum Nmr}, journal = {Journal of Chemical Physics}, volume = {66}, year = {1977}, note = {J Chem PhysDl332Times Cited:348Cited References Count:20}, pages = {5624-5644}, isbn = {0021-9606}, doi = {Doi 10.1063/1.433884}, url = {://WOS:A1977DL33200046}, author = {Vega, S. and Pines, A.} } @article {688, title = {Observation of C-13-N-14 Dipolar Couplings in Single-Crystals of Glycine}, journal = {Journal of Chemical Physics}, volume = {63}, year = {1975}, note = {J Chem PhysAt263Times Cited:24Cited References Count:10}, pages = {3676-3677}, isbn = {0021-9606}, doi = {Doi 10.1063/1.431768}, url = {://WOS:A1975AT26300072}, author = {Griffin, R. G. and Pines, A. and Waugh, J. S.} } @article {712, title = {Optically Detected Electron-Spin Echoes and Free Precession in Molecular Excited-States}, journal = {Physical Review Letters}, volume = {30}, year = {1973}, note = {Phys Rev LettO5544Times Cited:56Cited References Count:25}, pages = {158-161}, isbn = {0031-9007}, doi = {Doi 10.1103/Physrevlett.30.158}, url = {://WOS:A1973O554400002}, author = {Breiland, W. G. and Harris, C. B. and Pines, A.} }