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Christopher J Shaffer

Explore the profile of Christopher J Shaffer including associated specialties, affiliations and a list of published articles. Areas
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Articles 23
Citations 117
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Recent Articles
1.
Ascenzi D, Romanzin C, Lopes A, Tosi P, Zabka J, Polasek M, et al.
Front Chem . 2019 Aug; 7:537. PMID: 31428598
The reactivity of with CD has been experimentally investigated for its relevance in the chemistry of plasmas used for the conversion of CO in carbon-neutral fuels. Non-equilibrium plasmas are currently...
2.
Nguyen H, Andrikopoulos P, Rulisek L, Shaffer C, Turecek F
J Am Soc Mass Spectrom . 2018 May; 29(8):1706-1720. PMID: 29736598
We report a gas-phase UV photodissociation study investigating non-covalent interactions between neutral hydrophobic pentapeptides and peptide ions incorporating a diazirine-tagged photoleucine residue. Phenylalanine (Phe) and proline (Pro) were chosen as...
3.
Dang A, Shaffer C, Bim D, Lawler J, Lesslie M, Ryzhov V, et al.
J Phys Chem A . 2018 Feb; 122(8):2069-2078. PMID: 29425439
(2,2'-Bipyridine)M═O ions (M = Cu, Ni, Co) were generated by collision-induced dissociation and near-UV photodissociation of readily available [(2,2'-bipyridine)M(NO)] ions in the gas phase, and their structure was confirmed by...
4.
Pepin R, Shaffer C, Turecek F
J Mass Spectrom . 2017 Jun; 52(8):557-560. PMID: 28633192
No abstract available.
5.
Viglino E, Shaffer C, Turecek F
Angew Chem Int Ed Engl . 2016 May; 55(26):7469-73. PMID: 27159034
We report the first application of UV/Vis photodissociation action spectroscopy for the structure elucidation of tyrosine peptide cation radicals produced by oxidative intramolecular electron transfer in gas-phase metal complexes. Oxidation...
6.
Shaffer C, Martens J, Marek A, Oomens J, Turecek F
J Am Soc Mass Spectrom . 2016 Apr; 27(7):1176-85. PMID: 27059977
We report a combined experimental and computational study aimed at elucidating the structure of N-terminal fragment ions of the c type produced by electron transfer dissociation of photo-leucine (L*) peptide...
7.
Shaffer C, Andrikopoulos P, rezac J, Rulisek L, Turecek F
J Am Soc Mass Spectrom . 2016 Jan; 27(4):633-45. PMID: 26817657
Noncovalent complexes of hydrophobic peptides GLLLG and GLLLK with photoleucine (L*) tagged peptides G(L* n L m )K (n = 1,3, m = 2,0) were generated as singly charged ions...
8.
Shaffer C, Pepin R, Turecek F
J Mass Spectrom . 2015 Dec; 50(12):1438-42. PMID: 26634979
We report the first example of using ultraviolet (UV) photodissociation action spectroscopy for the investigation of gas-phase peptide cation-radicals produced by electron transfer dissociation. z-Type fragment ions (●) Gly-Gly-Lys(+), coordinated...
9.
Nguyen H, Shaffer C, Pepin R, Turecek F
J Phys Chem Lett . 2015 Nov; 6(23):4722-7. PMID: 26562489
UV photodissociation (UVPD) action spectroscopy is reported to provide a sensitive tool for the detection of radical sites in gas-phase peptide ions. UVPD action spectra of peptide cation radicals of...
10.
Nguyen H, Shaffer C, Ledvina A, Coon J, Turecek F
Int J Mass Spectrom . 2015 May; 378:20-30. PMID: 26005367
The serine residue displays specific effects on the dissociations of peptide fragment cation-radicals of the type which are produced by electron transfer dissociation. Energy-resolved collision-induced dissociation (ER-CID), time-resolved infrared multiphoton...