Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Velencia J. Witherspoon"'
Autor:
Nathan H. Williamson, Velencia J. Witherspoon, Teddy X. Cai, Rea Ravin, Ferenc Horkay, Peter J. Basser
Publikováno v:
Magnetic Resonance Letters, Vol 3, Iss 2, Pp 90-107 (2023)
Nuclear magnetic resonance (NMR) measurements of water diffusion have been extensively used to probe microstructure in porous materials, such as biological tissue, however primarily using pulsed gradient spin echo (PGSE) methods. Low-field single-sid
Externí odkaz:
https://doaj.org/article/3a95559052ef4e5fa36a141cffd3a59a
Autor:
Velencia J. Witherspoon, Kanae Ito, Chad R. Snyder, Madhusudan Tyagi, Tyler B. Martin, Peter A. Beaucage, Ryan C. Nieuwendaal, Richard S. Vallery, David W. Gidley, Jeffrey D. Wilbur, Dean Welsh, Christopher M. Stafford, Christopher L. Soles
Publikováno v:
Journal of Membrane Science. 678:121670
Autor:
Velencia J. Witherspoon, Michal E Komlosh, Dan Benjamini, Evren Özarslan, Nickolay Lavrik, Peter J. Basser
Diffusion magnetic resonance imaging (dMRI) methods are commonly employed to infer changes in tissue microstructure. Quantities like the apparent diffusion coefficient (mADC), and the fractional anisotropy (FA), derived from diffusion tensor imaging
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff0f60fc6e93e190310047b2f694f33e
https://doi.org/10.1101/2022.10.10.511634
https://doi.org/10.1101/2022.10.10.511634
Autor:
Rocío Mercado, Bernhard Blümich, Velencia J. Witherspoon, Amber Mace, Efrem Braun, Berend Smit, Jonathan E. Bachman, Jeffrey R. Long, Jeffrey A. Reimer
Publikováno v:
The Journal of Physical Chemistry C. 123:12286-12295
We examine the diffusion of methane in the metal–organic frameworks M2(dobdc) (M = Mg, Ni, Zn; dobdc4– = 2,5-dioxido-1,4-benzenedicarboxylate) as a function of methane loading through a combination...
Publikováno v:
J Chem Phys
Time-dependent diffusion behavior is probed over sub-millisecond timescales in a single shot using an NMR static gradient, time-incremented echo train acquisition (SG-TIETA) framework. The method extends the Carr-Purcell-Meiboom-Gill (CPMG) cycle und
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1d06bdfccfc4159e741a772e27b8abf
Publikováno v:
The Journal of Physical Chemistry C. 122:8295-8305
We assign 1H and 13C NMR resonances emanating from acetone, methanol, and cyclohexane adsorbed inside the pores of UiO-66(Zr). These results are informed by density functional theory (DFT) calculations, which probe the role of two competing effects i
Autor:
Miguel I. Gonzalez, Phillip J. Milner, Velencia J. Witherspoon, Bernhard Blümich, Alexander C. Forse, Rocío Mercado, Jeffrey A. Reimer, Jeffrey D. Martell, Berend Smit, Rebecca L. Siegelman, Jeffrey R. Long, Sudi Jawahery
Publikováno v:
Journal of the American Chemical Society. 140:1663-1673
Metal-organic frameworks are promising materials for energy-efficient gas separations, but little is known about the diffusion of adsorbates in materials featuring one-dimensional porosity at the nanoscale. An understanding of the interplay between f
Publikováno v:
Witherspoon, Velencia J; Xu, Jun; & Reimer, Jeffrey A. (2018). Solid-State NMR Investigations of Carbon Dioxide Gas in Metal-Organic Frameworks: Insights into Molecular Motion and Adsorptive Behavior.. Chemical reviews, 118(20), 10033-10048. doi: 10.1021/acs.chemrev.7b00695. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/04b4v68q
Chemical reviews, vol 118, iss 20
Chemical reviews, vol 118, iss 20
Solid-state nuclear magnetic resonance (SSNMR) methods have been routinely used for the characterization of both the structure and the dynamics of metal organic frameworks (MOFs), a collection of porous media investigated for potential applications i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af132b9dc14844135963d3c20d3f84c7
http://www.escholarship.org/uc/item/04b4v68q
http://www.escholarship.org/uc/item/04b4v68q
Autor:
Alexander C, Forse, Miguel I, Gonzalez, Rebecca L, Siegelman, Velencia J, Witherspoon, Sudi, Jawahery, Rocio, Mercado, Phillip J, Milner, Jeffrey D, Martell, Berend, Smit, Bernhard, Blümich, Jeffrey R, Long, Jeffrey A, Reimer
Publikováno v:
J Am Chem Soc
Metal–organic frameworks are promising materials for energy-efficient gas separations, but little is known about the diffusion of adsorbates in materials featuring one-dimensional porosity at the nanoscale. An understanding of the interplay between
Autor:
Lucy M. Yu, Sondre K. Schnell, Seyed Mohamad Moosavi, Efrem Braun, Sudi Jawahery, Jeffrey A. Reimer, Velencia J. Witherspoon, Berend Smit
Publikováno v:
The Journal of Physical Chemistry C, vol 121, iss 28
Journal of Physical Chemistry C, vol 121, iss 28
15456-15462
Journal of Physical Chemistry C
Witherspoon, VJ; Yu, LM; Jawahery, S; Braun, E; Moosavi, SM; Schnell, SK; et al.(2017). Translational and Rotational Motion of C8 Aromatics Adsorbed in Isotropic Porous Media (MOF-5): NMR Studies and MD Simulations. Journal of Physical Chemistry C, 121(28), 15456-15462. doi: 10.1021/acs.jpcc.7b03181. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/1x5920fh
Journal of Physical Chemistry C, vol 121, iss 28
15456-15462
Journal of Physical Chemistry C
Witherspoon, VJ; Yu, LM; Jawahery, S; Braun, E; Moosavi, SM; Schnell, SK; et al.(2017). Translational and Rotational Motion of C8 Aromatics Adsorbed in Isotropic Porous Media (MOF-5): NMR Studies and MD Simulations. Journal of Physical Chemistry C, 121(28), 15456-15462. doi: 10.1021/acs.jpcc.7b03181. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/1x5920fh
We combined nuclear magnetic resonance (NMR) and molecular dynamics (MD) simulation to study xylene behavior in MOF-5, probing the effects of adsorbate geometry in a weakly interacting model isotropic metal organic framework (MOF) system. We employed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62b2f65def83489389e63a2166d7d299
https://escholarship.org/uc/item/1x5920fh
https://escholarship.org/uc/item/1x5920fh