Search Results - "Parks, Joel H"

Conformational Change in Unsolvated Trp-cage Protein Probed by Fluorescence by Iavarone, Anthony T, Parks, Joel H

“…We report the first direct measurements of the unfolding of a protein, Trp-cage, in the gas phase using laser-induced fluorescence of protein ions in a heated…”
Get full text

Fluorescence Quenching Induced by Conformational Fluctuations in Unsolvated Polypeptides by Shi, Xiangguo, Duft, Denis, Parks, Joel H

“…Time-resolved measurements were conducted to relate the fluorescence lifetimes of dye-derivatized polypeptides to local conformational dynamics in trapped,…”
Get full text

Fluorescence Probe of Trp-Cage Protein Conformation in Solution and in Gas Phase by Iavarone, Anthony T, Patriksson, Alexandra, van der Spoel, David, Parks, Joel H

“…Measurements of protein unfolding in the absence of solvent, when combined with unfolding studies in solution, offer a unique opportunity to measure the…”
Get full text

Shedding Light on Biomolecule Conformational Dynamics Using Fluorescence Measurements of Trapped Ions by Iavarone, Anthony T, Duft, Denis, Parks, Joel H

“…Biomolecule conformational change has been widely investigated in solution using several methods; however, much less experimental data about structural changes…”
Get full text

Structural evolution of Au nanoclusters: From planar to cage to tubular motifs by Xing, Xiaopeng, Yoon, Bokwon, Landman, Uzi, Parks, Joel H.

“…The evolution of structural motifs of gold cluster anions, Au{sub n}{sup -}, in the size range n=11-24 has been determined through a comparison of electron…”
Get full text

Photoelectron Spectroscopy of Isolated Multiply Negatively Charged Oligonucleotides by Weber, J. Mathias, Ioffe, Ilya N, Berndt, Katerina M, Löffler, Daniel, Friedrich, Jochen, Ehrler, Oli T, Danell, Allison S, Parks, Joel H, Kappes, Manfred M

“…Ultraviolet photoelectron spectroscopy in an ion beam was used to investigate the electronic properties of isolated DNA oligonucleotides [dA5-4H]4- and…”
Get full text

Dynamic fluxionality and enhanced CO adsorption in the presence of coadsorbed H2O on free gold cluster cations by Xing, Xiaopeng, Li, Xi, Yoon, Bokwon, Landman, Uzi, Parks, Joel H.

“…[Display omitted] •Saturated adsorption of CO on Aun+ measured by mass spectrometry.•Abrupt changes in CO adsorption after coadsorption of single H2O is…”
Get full text

Relationship between Conformational Dynamics and Electron Transfer in a Desolvated Peptide. Part I. Structures by Semrouni, David, Clavaguéra, Carine, Ohanessian, Gilles, Parks, Joel H

“…The structures, dynamics and energetics of the protonated, derivatized peptide DyeX-(Pro)4-Arg+-Trp, where “Dye” stands for the BODIPY analogue of…”
Get full text

Fluorescence Lifetime Probe of Biomolecular Conformations by Shi, Xiangguo, Parks, Joel H.

“…Methods have been developed to measure the fluorescence lifetime versus temperature of trapped biomolecular ions derivatized with a fluorescent dye. Previous…”
Get full text

Aldehyde Complexes with Protonated Peptides in the Gas Phase by Shi, Xiangguo, Ren, Jianhua, Parks, Joel H

“…This Article presents a study of aldehyde complexes with peptide ions formed by bimolecular collisions in the gas phase. Desolvated ions generated by…”
Get full text

Relationship between Conformational Dynamics and Electron Transfer in a Desolvated Peptide. Part II. Temperature Dependence by Parks, Joel H, Semrouni, David, Clavaguéra, Carine, Ohanessian, Gilles

“…Recent time-resolved lifetime measurements studied the quenching of the fluorescence emitted by a dye covalently bound to the desolvated peptide…”
Get full text

FRET measurements of trapped oligonucleotide duplexes by Danell, Allison S., Parks, Joel H.

“…Sensitive methods developed to measure laser-induced fluorescence from trapped ions have been applied to study the intermediate states of the dissociation of…”
Get full text

Fraying and electron autodetachment dynamics of trapped gas phase oligonucleotides by Danell, Allison S, Parks, Joel H

“…Sensitive methods recently developed to measure laser-induced fluorescence from trapped ions have been applied to study the dynamics of double- and…”
Get full text

Pulsed fluorescence measurements of trapped molecular ions with zero background detection by Khoury, Joseph T., Rodriguez-Cruz, Sandra E., Parks, Joel H.

“…Sensitive methods have been developed to measure laser-induced fluorescence from trapped ions by reducing the detection of background scattering to zero levels…”
Get full text

Size-dependent fivefold and icosahedral symmetry in silver clusters by XIAOPENG XING, DANELL, Ryan M, GARZON, Ignacio L, MICHAELIAN, Karo, BLOM, Martine N, BUMS, Michael M, PARKS, Joel H

Get full text

The Structures of Ag55 + and Ag55 -:  Trapped Ion Electron Diffraction and Density Functional Theory by Schooss, Detlef, Blom, Martine N, Parks, Joel H, Issendorff, Bernd v, Haberland, Hellmut, Kappes, Manfred M

“…We report the experimental structure determination of cold, mass selected Ag55 +/- cluster ions using the recently developed technique of trapped ion electron…”
Get full text

Protein fluorescence measurements within electrospray droplets by Rodriguez-Cruz, Sandra E., Khoury, Joseph T., Parks, Joel H.

“…The conformation of cytochrome c molecules within electrospray droplets is investigated by monitoring the laser induced fluorescence of its single tryptophan…”
Get full text

Photophysical studies on the benzophenones. Prompt and delayed fluorescences and self-quenching by Wolf, Monte W, Legg, Kenneth D, Brown, Ronald E, Singer, Lawrence A, Parks, Joel H

Get full text

The Structures of Ag 55 + and Ag 55 - :  Trapped Ion Electron Diffraction and Density Functional Theory by Schooss, Detlef, Blom, Martine N., Parks, Joel H., Issendorff, Bernd v., Haberland, Hellmut, Kappes, Manfred M.

Get full text

Evolution of the collective-mode resonance in small adsorbed sodium clusters by PARKS, J. H, MCDONALD, S. A

Get full text