Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Joel H. Parks"'
Publikováno v:
Physical Chemistry Chemical Physics. 18:743-748
Exploring the reactivity of metal clusters is an important task in cluster science, while only a few previous studies involve the reactions of nano-sized ones. Here we report a kinetic measurement on reactions of Ag(n)(-) (n = 6-69) with O2 using a f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bead397e3874af35de842536c3c2a64f
https://doi.org/10.1039/c5cp06116d
https://doi.org/10.1039/c5cp06116d
Publikováno v:
International Journal of Mass Spectrometry. 377:393-402
This paper presents mass spectrometry measurements of the saturated adsorption of CO in the presence of coadsorbed H2O on gas phase gold cluster cations, Aun+, n = 3–20, stored in a quadrupole ion trap. Initial mass spectra obtained at 150 K for sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4542a06f2934aafa514f12068611797
Autor:
Joel H. Parks, Xiangguo Shi
Publikováno v:
Journal of the American Society for Mass Spectrometry. 21:707-718
Methods have been developed to measure the fluorescence lifetime versus temperature of trapped biomolecular ions derivatized with a fluorescent dye. Previous measurements for different sequences of polyproline peptides demonstrated that quenching rat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bd1d2548d33cdc03bd8d49c749b495d
https://doi.org/10.1016/j.jasms.2010.01.009
https://doi.org/10.1016/j.jasms.2010.01.009
Publikováno v:
Journal of the American Chemical Society. 129:6726-6735
Measurements of protein unfolding in the absence of solvent, when combined with unfolding studies in solution, offer a unique opportunity to measure the effects of solvent on protein structure and dynamics. The experiments presented here rely on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe903d13a2c675d772fb6eabda681044
https://doi.org/10.1021/ja065092s
https://doi.org/10.1021/ja065092s
Publikováno v:
The Journal of Physical Chemistry A. 110:12714-12727
Biomolecule conformational change has been widely investigated in solution using several methods; however, much less experimental data about structural changes are available for completely isolated, gas-phase biomolecules. Studies of conformational c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26ec956f919196ea189122c29a174b11
https://doi.org/10.1021/jp064933e
https://doi.org/10.1021/jp064933e
Publikováno v:
International Journal of Mass Spectrometry. 253:172-180
Fluorescence measurements of polypeptides derivatized with the fluorescent dye BODIPY TMR have been used to probe the polypeptide conformational dynamics as a function of temperature and charge state. Measurements of (BODIPY TMR)-[Pro]n-Arg-Trp and (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0b1bac3d8097c2efde0e1064a6ca327
https://doi.org/10.1016/j.ijms.2005.11.026
https://doi.org/10.1016/j.ijms.2005.11.026
Autor:
Martine N. Blom, Manfred M. Kappes, Detlef Schooss, H. Haberland, Joel H. Parks, Bernd V. Issendorff
Publikováno v:
Nano Letters. 5:1972-1977
We report the experimental structure determination of cold, mass selected Ag(55)(+/-) cluster ions using the recently developed technique of trapped ion electron diffraction. By comparison of experimental and theoretical molecular scattering function
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c3955dba3dde7d19f19bc950d6684c5
https://doi.org/10.1021/nl0513434
https://doi.org/10.1021/nl0513434
Autor:
Daniel Löffler, Allison S. Danell, Ilya N. Ioffe, J. Mathias Weber, Oli T. Ehrler, Jochen Friedrich, Joel H. Parks, Manfred M. Kappes, Katerina M. Berndt
Publikováno v:
Journal of the American Chemical Society. 126:8585-8589
Ultraviolet photoelectron spectroscopy in an ion beam was used to investigate the electronic properties of isolated DNA oligonucleotides [dA(5)-4H](4-) and [dT(5)-4H](4-), carrying four excess negative charges. We find the fourth adiabatic electron a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57590bba966d7cd74e67fae160e87ab2
https://doi.org/10.1021/ja049736c
https://doi.org/10.1021/ja049736c
Autor:
Allison S. Danell, Joel H. Parks
Publikováno v:
International Journal of Mass Spectrometry. 229:35-45
Sensitive methods developed to measure laser-induced fluorescence from trapped ions have been applied to study the intermediate states of the dissociation of oligonucleotide duplexes. Double-stranded oligonucleotide anions were prepared with FRET don
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59f83b90fd71f4ad0d5c657fa662ce04
https://doi.org/10.1016/s1387-3806(03)00253-7
https://doi.org/10.1016/s1387-3806(03)00253-7
Publikováno v:
Journal of the American Society for Mass Spectrometry. 13:696-708
Sensitive methods have been developed to measure laser-induced fluorescence from trapped ions by reducing the detection of background scattering to zero levels during the laser excitation pulse. The laser beam diameter has been reduced to 150 m to el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c7268b3d5636b7ad116f28ec5102969
https://doi.org/10.1016/s1044-0305(02)00364-1
https://doi.org/10.1016/s1044-0305(02)00364-1