Robert J Levis

Robert J Levis

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Robert J Levis

Robert J Levis

Publications by authors named "Robert J Levis"

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Formation of Copper(I) Oxide- and Copper(I) Cyanide-Polyacetonitrile Nanocomposites through Strong-Field Laser Processing of Acetonitrile Solutions of Copper(II) Acetate Dimer.

J Phys Chem A 2019 Aug 18;123(30):6430-6438. Epub 2019 Jul 18.

Department of Chemistry and the Center for Advanced Photonics Research , Temple University , Philadelphia , Pennsylvania 19122 , United States.

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http://dx.doi.org/10.1021/acs.jpca.9b04206DOI Listing
August 2019

Quantification of Protein-Ligand Interactions by Laser Electrospray Mass Spectrometry.

J Am Soc Mass Spectrom 2018 07 13;29(7):1484-1492. Epub 2018 Apr 13.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-018-1935-9DOI Listing
July 2018

Direct Analysis of Proteins from Solutions with High Salt Concentration Using Laser Electrospray Mass Spectrometry.

J Am Soc Mass Spectrom 2018 05 8;29(5):1002-1011. Epub 2018 Mar 8.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-018-1893-2DOI Listing
May 2018

Conserving Coherence and Storing Energy during Internal Conversion: Photoinduced Dynamics of cis- and trans-Azobenzene Radical Cations.

J Phys Chem A 2017 Nov 7;121(45):8642-8651. Epub 2017 Nov 7.

Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen Ø, Denmark.

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http://dx.doi.org/10.1021/acs.jpca.7b09185DOI Listing
November 2017

Assessment of Reproducibility of Laser Electrospray Mass Spectrometry using Electrospray Deposition of Analyte.

J Am Soc Mass Spectrom 2017 May 15;28(5):880-886. Epub 2017 Mar 15.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-017-1622-2DOI Listing
May 2017

Reactive Pendant Mn═O in a Synthetic Structural Model of a Proposed S State in the Photosynthetic Oxygen Evolving Complex.

J Am Chem Soc 2017 04 24;139(13):4675-4681. Epub 2017 Mar 24.

Department of Chemistry, Temple University , 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States.

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http://pubs.acs.org/doi/10.1021/jacs.6b05906
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http://dx.doi.org/10.1021/jacs.6b05906DOI Listing
April 2017

Isolating Protein Charge State Reduction in Electrospray Droplets Using Femtosecond Laser Vaporization.

J Am Soc Mass Spectrom 2017 Mar 6;28(3):470-478. Epub 2017 Jan 6.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-016-1576-9DOI Listing
March 2017

Gold Nanotriangle Formation through Strong-Field Laser Processing of Aqueous KAuCl and Postirradiation Reduction by Hydrogen Peroxide.

Langmuir 2017 01 16;33(1):243-252. Epub 2016 Dec 16.

Department of Chemistry and the Center for Advanced Photonics Research, Temple University , Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/acs.langmuir.6b03812DOI Listing
January 2017

Classification of Gunshot Residue Using Laser Electrospray Mass Spectrometry and Offline Multivariate Statistical Analysis.

Anal Chem 2016 12 22;88(23):11390-11398. Epub 2016 Nov 22.

Center for Advanced Photonics Research, Department of Chemistry, Temple University , 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/acs.analchem.6b01438DOI Listing
December 2016

Nonresonant, femtosecond laser vaporization and electrospray post-ionization mass spectrometry as a tool for biological tissue imaging.

Methods 2016 07 27;104:79-85. Epub 2016 Feb 27.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, 1901 N. 13th St., Philadelphia, PA 19122, United States. Electronic address:

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http://dx.doi.org/10.1016/j.ymeth.2016.02.016DOI Listing
July 2016

Elucidating Strong Field Photochemical Reduction Mechanisms of Aqueous [AuCl4](-): Kinetics of Multiphoton Photolysis and Radical-Mediated Reduction.

J Phys Chem A 2016 May 12;120(20):3562-9. Epub 2016 May 12.

Department of Chemistry and Center for Advanced Photonics Research, Temple University , Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/acs.jpca.6b03163DOI Listing
May 2016

Ambient Molecular Analysis of Biological Tissue Using Low-Energy, Femtosecond Laser Vaporization and Nanospray Postionization Mass Spectrometry.

J Am Soc Mass Spectrom 2016 Mar 14;27(3):542-51. Epub 2015 Dec 14.

Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-015-1302-zDOI Listing
March 2016

Filament-Assisted Impulsive Raman Spectroscopy of Ozone and Nitrogen Oxides.

J Phys Chem A 2015 Sep 25;119(35):9272-80. Epub 2015 Aug 25.

Department of Chemistry, ‡Department of Physics, and §Center for Advanced Photonics Research, Temple University Philadelphia , Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/acs.jpca.5b06319DOI Listing
September 2015

Internal energy deposition for low energy, femtosecond laser vaporization and nanospray post-ionization mass spectrometry using thermometer ions.

J Am Soc Mass Spectrom 2015 May 28;26(5):716-24. Epub 2015 Feb 28.

Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-015-1081-6DOI Listing
May 2015

Increasing protein charge state when using laser electrospray mass spectrometry.

J Am Soc Mass Spectrom 2015 May 10;26(5):706-15. Epub 2015 Mar 10.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-015-1084-3DOI Listing
May 2015

Triangular gold nanoplate growth by oriented attachment of Au seeds generated by strong field laser reduction.

Nano Lett 2015 May 8;15(5):3377-82. Epub 2015 Apr 8.

†Department of Chemistry and ‡Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/acs.nanolett.5b00709DOI Listing
May 2015

Direct analysis of intact biological macromolecules by low-energy, fiber-based femtosecond laser vaporization at 1042 nm wavelength with nanospray postionization mass spectrometry.

Anal Chem 2015 Mar 26;87(6):3187-94. Epub 2015 Feb 26.

†Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/ac502563cDOI Listing
March 2015

Strong Field Adiabatic Ionization Prepares a Launch State for Coherent Control.

J Phys Chem Lett 2014 Dec 3;5(24):4305-9. Epub 2014 Dec 3.

†Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/jz502313fDOI Listing
December 2014

Determination of internal energy distributions of laser electrospray mass spectrometry using thermometer ions and other biomolecules.

J Am Soc Mass Spectrom 2014 Sep 11;25(9):1572-82. Epub 2014 Jul 11.

Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA.

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http://dx.doi.org/10.1007/s13361-014-0936-6DOI Listing
September 2014

Higher-order nonlinearity of refractive index: the case of argon.

J Chem Phys 2014 Jun;140(21):214316

Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1063/1.4880716DOI Listing
June 2014

Spectral-to-temporal amplitude mapping polarization spectroscopy of rotational transients.

J Phys Chem A 2013 Jul 16;117(29):6354-61. Epub 2013 May 16.

Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1021/jp402135tDOI Listing
July 2013

Laser electrospray mass spectrometry minimizes ion suppression facilitating quantitative mass spectral response for multicomponent mixtures of proteins.

Anal Chem 2013 Jul 27;85(14):6667-73. Epub 2013 Jun 27.

Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/ac400401hDOI Listing
July 2013

Measurement of an Electronic Resonance in a Ground-State, Gas-Phase Acetophenone Cation via Strong-Field Mass Spectrometry.

J Phys Chem Lett 2013 May 24;4(10):1587-91. Epub 2013 Apr 24.

Department of Chemistry, Department of Physics, and Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/jz400516hDOI Listing
May 2013

Quantitative measurements of small molecule mixtures using laser electrospray mass spectrometry.

Anal Chem 2013 Apr 20;85(7):3629-37. Epub 2013 Mar 20.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/ac303443qDOI Listing
April 2013

Classification of smokeless powders using laser electrospray mass spectrometry and offline multivariate statistical analysis.

Anal Chem 2013 Jan 18;85(1):296-302. Epub 2012 Dec 18.

Center for Advanced Photonics Research, Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/ac302661kDOI Listing
January 2013

Direct phase and amplitude characterization of femtosecond laser pulses undergoing filamentation in air.

Opt Lett 2012 May;37(10):1775-7

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1364/OL.37.001775DOI Listing
May 2012

Filament-driven impulsive Raman spectroscopy.

J Phys Chem A 2011 Nov 2;115(46):13407-12. Epub 2011 Nov 2.

Department of Chemistry and Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/jp207253zDOI Listing
November 2011

Determination of inorganic improvised explosive device signatures using laser electrospray mass spectrometry detection with offline classification.

Anal Chem 2011 Sep 18;83(18):7115-22. Epub 2011 Aug 18.

Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States.

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http://dx.doi.org/10.1021/ac2014299DOI Listing
September 2011

Nonresonant femtosecond laser vaporization of aqueous protein preserves folded structure.

Proc Natl Acad Sci U S A 2011 Jul 11;108(30):12217-22. Epub 2011 Jul 11.

Department of Chemistry, Temple University, Philadelphia, PA 19122, USA.

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http://dx.doi.org/10.1073/pnas.1105673108DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3145716PMC
July 2011

Analysis of amphiphilic lipids and hydrophobic proteins using nonresonant femtosecond laser vaporization with electrospray post-ionization.

J Am Soc Mass Spectrom 2011 Apr 8;22(4):762-72. Epub 2011 Feb 8.

Center for Advanced Photonics Research, Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, PA 19122, USA.

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http://dx.doi.org/10.1007/s13361-010-0066-8DOI Listing
April 2011

Nonresonant femtosecond laser vaporization with electrospray postionization for ex vivo plant tissue typing using compressive linear classification.

Anal Chem 2011 Mar 25;83(6):2145-51. Epub 2011 Feb 25.

Temple University, Department of Chemistry, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States.

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https://www.temple.edu/capr/publications/PDFs/judge_2011_Non
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http://pubs.acs.org/doi/abs/10.1021/ac102978f
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http://dx.doi.org/10.1021/ac102978fDOI Listing
March 2011

Mass analysis of biological macromolecules at atmospheric pressure using nonresonant femtosecond laser vaporization and electrospray ionization.

Anal Chem 2010 Dec 15;82(24):10203-7. Epub 2010 Nov 15.

Temple University Department of Chemistry, 1901 N 13th Street, Philadelphia, Pennsylvania 19122, United States.

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http://pubs.acs.org/doi/abs/10.1021/ac102409k
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http://dx.doi.org/10.1021/ac102409kDOI Listing
December 2010

Spatio-temporal and -spectral coupling of shaped laser pulses in a focusing geometry.

Opt Express 2010 Nov;18(23):23973-86

Department of Chemistry, Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1364/OE.18.023973DOI Listing
November 2010

Identification of explosives and explosive formulations using laser electrospray mass spectrometry.

Rapid Commun Mass Spectrom 2010 Jun;24(11):1659-64

Department of Chemistry, Temple University, Philadelphia, PA 19122, USA.

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http://dx.doi.org/10.1002/rcm.4566DOI Listing
June 2010

Numerical bound state electron dynamics of carbon dioxide in the strong-field regime.

J Phys Chem A 2010 Feb;114(7):2576-87

Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1021/jp904549dDOI Listing
February 2010

Observation of broadband time-dependent Rabi shifting in microplasmas.

Phys Rev Lett 2009 Nov 10;103(20):205001. Epub 2009 Nov 10.

Center for Advanced Photonics Research, Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1103/PhysRevLett.103.205001DOI Listing
November 2009

Mass spectrometry of intact neutral macromolecules using intense non-resonant femtosecond laser vaporization with electrospray post-ionization.

Rapid Commun Mass Spectrom 2009 Oct;23(19):3151-7

Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://www.temple.edu/capr/publications/PDFs/Brady_MassSpec_
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http://doi.wiley.com/10.1002/rcm.4226
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http://dx.doi.org/10.1002/rcm.4226DOI Listing
October 2009

Parametric spatio-temporal control of focusing laser pulses.

Opt Express 2009 Aug;17(18):15808-20

Department of Chemistry, Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1364/OE.17.015808DOI Listing
August 2009

Discrimination of composite graphite samples using remote filament-induced breakdown spectroscopy.

Anal Chem 2009 Apr;81(7):2658-63

Temple University Department of Chemistry, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1021/ac802080qDOI Listing
April 2009

Adaptive reshaping of objects in (multiparameter) Hilbert space for enhanced detection and classification: an application of receiver operating curve statistics to laser-based mass spectroscopy.

J Opt Soc Am A Opt Image Sci Vis 2008 May;25(5):1039-50

Center for Advanced Photonics Research, Temple University, Philadelphia, PA 19122, USA.

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http://dx.doi.org/10.1364/josaa.25.001039DOI Listing
May 2008

Numerical simulation of nonadiabatic electron excitation in the strong-field regime. 3. Polyacene neutrals and cations.

J Phys Chem A 2007 Aug 11;111(30):6920-32. Epub 2007 Jul 11.

Department of Chemistry, Wayne State University, Detroit, MI 48202, USA.

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http://pubs.acs.org/doi/abs/10.1021/jp070380b
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http://dx.doi.org/10.1021/jp070380bDOI Listing
August 2007

Control goal selection through anticorrelation analysis in the detection space.

J Phys Chem A 2006 Sep;110(36):10558-63

Center for Advanced Photonics Research, Department of Chemistry, Temple University, Philadelphia, PA 19122, USA.

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http://pubs.acs.org/doi/abs/10.1021/jp062570c
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http://dx.doi.org/10.1021/jp062570cDOI Listing
September 2006

Rapid proton transfer mediated by a strong laser field.

Phys Rev Lett 2006 Apr 25;96(16):163002. Epub 2006 Apr 25.

Department of Chemistry, Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1103/PhysRevLett.96.163002DOI Listing
April 2006

Numerical simulation of nonadiabatic electron excitation in the strong field regime. 2. Linear polyene cations.

J Phys Chem A 2005 Nov;109(46):10527-34

Department of Chemistry, Wayne State University, Detroit, MI 48202, USA.

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http://pubs.acs.org/doi/abs/10.1021/jp053696x
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http://dx.doi.org/10.1021/jp053696xDOI Listing
November 2005

A numerical simulation of nonadiabatic electron excitation in the strong field regime: Linear polyenes.

J Phys Chem A 2005 Jun;109(23):5176-85

Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.

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http://pubs.acs.org/doi/abs/10.1021/jp050968n
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http://dx.doi.org/10.1021/jp050968nDOI Listing
June 2005

A time-dependent Hartree-Fock approach for studying the electronic optical response of molecules in intense fields.

Phys Chem Chem Phys 2005 Jan;7(2):233-9

Department of Chemistry, Wayne State University, Detroit, MI 48202, USA.

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http://dx.doi.org/10.1039/b415849kDOI Listing
January 2005

Coulomb explosion of large polyatomic molecules assisted by nonadiabatic charge localization.

Phys Rev Lett 2004 Feb 12;92(6):063001. Epub 2004 Feb 12.

Department of Chemistry, Center for Advanced Photonics Research, Temple University, Philadelphia, Pennsylvania 19122, USA.

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http://dx.doi.org/10.1103/PhysRevLett.92.063001DOI Listing
February 2004