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Temperature Response Of 129 Xe Depolarization Transfer And Its Application For Ultrasensitive Nmr Detection, Leif Schröder, Tyler Meldrum, Monica Smith, Thomas J. Lowery, David E. Wemmer, Alexander Pines Jun 2008

Temperature Response Of 129 Xe Depolarization Transfer And Its Application For Ultrasensitive Nmr Detection, Leif Schröder, Tyler Meldrum, Monica Smith, Thomas J. Lowery, David E. Wemmer, Alexander Pines

Arts & Sciences Articles

Trapping xenon in functionalized cryptophane cages makes the sensitivity of hyperpolarized (HP) 129Xe available for specific NMR detection of biomolecules. Here, we study the signal transfer onto a reservoir of unbound HP xenon by gating the residence time of the nuclei in the cage through the temperature-dependant exchange rate. Temperature changes larger than ∼0.6  K are detectable as an altered reservoir signal. The temperature response is adjustable with lower concentrations of caged xenon providing more sensitivity at higher temperatures. Ultrasensitive detection of functionalized cryptophane at 310 K is demonstrated with a concentration of 10 nM, corresponding to a ∼4000 ...


Broadening, Shifting, And Line Asymmetries In The 2←0 Band Of Co And Co–N2: Experimental Results And Theoretical Calculations, Adriana Predoi-Cross, J. P. Bouanich, D. Chris Benner, A. D. May, J. R. Drummond Jan 2000

Broadening, Shifting, And Line Asymmetries In The 2←0 Band Of Co And Co–N2: Experimental Results And Theoretical Calculations, Adriana Predoi-Cross, J. P. Bouanich, D. Chris Benner, A. D. May, J. R. Drummond

Arts & Sciences Articles

We have measured the room temperature, widths, pressure shifts, and line asymmetry coefficients for many transitions of the first overtone band of CO and CO perturbed by N2." role="presentation" style="display: inline; line-height: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px 2px 0px 0px; margin: 0px; position: relative;">N2.N2. The broadening coefficients were obtained with an accuracy of about 1%. The pure CO profiles have been fitted by a Voigt profile while the CO–N2" role="presentation" style="display: inline; line-height: normal; word-spacing ...


Slow Down, D. Chris Benner, Rodelle A. Benner Oct 1996

Slow Down, D. Chris Benner, Rodelle A. Benner

Arts & Sciences Articles

No abstract provided.


Atlas Of High Resolution Infrared Spectra Of Carbon Dioxide: February 1984 Edition, D. Chris Benner Jan 1984

Atlas Of High Resolution Infrared Spectra Of Carbon Dioxide: February 1984 Edition, D. Chris Benner

Arts & Sciences Articles

Long-path, low-pressure laboratory absorption spectra of carbon dioxide i are presented in an atlas format for the spectral regions 1830 to 2100 cm" , 2395 to 2680 cm-I i , and 3140 to 3235 cm- . The data were recorded at 0.01 cm"I resolution and room temperature with the Fourier transform spectrometer in the McMath solar telescope complex of the National Solar Observatory at Kitt Peak. A list of positions and assignments is given for the 3336 lines observed. A total of 52 bands of 12C1602, 13C1602, 12C160180, 12C160170, and 13C160180 have been identified.


Atlas Of High Resolution Infrared Spectra Of Carbon Dioxide: February 1983 Edition, D. Chris Benner Jan 1983

Atlas Of High Resolution Infrared Spectra Of Carbon Dioxide: February 1983 Edition, D. Chris Benner

Arts & Sciences Articles

No abstract provided.