Differentiation of isomeric oxygenated adsorbates using low-energy ion/surface collisions

Wade, Nathan; Jo, Sung‐Chan; Gologan, Bogdan; Cooks, R. Graham

doi:10.1016/j.ijms.2003.08.015

Cited by 5 publications

(5 citation statements)

References 49 publications

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“…Detailed descriptions have been provided − for preparation of SAM surfaces with various chemical functionalities. The type of SAM surface used is indicated by the abbreviated name, which refers to the nature of the terminal functionality of the surface-bound, long-chain hydrocarbon.…”

Section: Methodsmentioning

confidence: 99%

Preparative Linear Ion Trap Mass Spectrometer for Separation and Collection of Purified Proteins and Peptides in Arrays Using Ion Soft Landing

et al. 2004

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A preparative mass spectrometer for microarray fabrication is reported. The instrument includes an atmospheric pressure ionization source, a linear ion trap mass analyzer, an ion collection surface positioning system, and a surface loading chamber with independent vacuum pumping. It was designed for the production of protein arrays using the ion soft-landing technique to collect ions on a surface after separation by mass/charge ratio. Small microarrays have been prepared by isolating and soft landing individual protein or peptide ions after electrospray ionization of mixtures. The composition and purity of the separated materials has been confirmed using independent external mass spectrometric analysis of rinse solutions of the collected spots, either by the new method of electrosonic spray ionization MS or by nanospray ionization MS. The ability to retain bioactivity in the mass-selected and collected biomolecules has been demonstrated in particular cases. The reported instrument has also been characterized as an analytical mass spectrometer.

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Section: Methodsmentioning

confidence: 99%

Preparative Linear Ion Trap Mass Spectrometer for Separation and Collection of Purified Proteins and Peptides in Arrays Using Ion Soft Landing

et al. 2004

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“…The mass spectra show distinctive features associated with these two different substrates (Figure ). For different isomeric oxygenated adsorbates, hydrogen atom abstraction by the C 5 H 5 N + ion was found to be favored at CH 3 CH 2 O- and CH 3 O-terminated surfaces relative to the HO-terminated surface …”

Section: Polyatomic Ion/surface Collisionsmentioning

confidence: 99%

“…This fact can be used to obtain specific information on its chemical composition. An example is the reaction of SiCl 3 + at isomeric surfaces, bearing functional groups such as HO–, CH 3 O–, and CH 3 CH 2 O– . The distinctive product formation provides qualitative information about the nature of the isomeric surfaces.…”

Section: Polyatomic Ion/surface Collisionsmentioning

confidence: 99%

“…For different isomeric oxygenated adsorbates, hydrogen atom abstraction by the C 5 H 5 N + ion was found to be favored at CH 3 CH 2 O-and CH 3 O-terminated surfaces relative to the HO-terminated surface. 310 Pyrazine molecular ions (C 4 H 4 N 2 + ) have been the subject of many studies and have been shown to be able to pick up hydrogen atoms, methyl radicals, and groups containing multiple carbon atoms 67,77 (see Scheme 2). Data from isotopically mixed surfaces show that the carbon units originate from a single chain and are transferred as intact alkyl groups.…”

Section: Aromatic Hydrocarbon Ionsmentioning

confidence: 99%

“…An example is the reaction of SiCl 3 + at isomeric surfaces, bearing functional groups such as HO−, CH 3 O−, and CH 3 CH 2 O−. 310 The distinctive product formation provides qualitative information about the nature of the isomeric surfaces. Scattering of SiCl 3 + ion at 60 eV collision yields dissociative ion/surface reaction products, e.g., SiCl 2 OH + and SiCl 2 OCH 3 + , from the HO-terminated and CH 3 O-terminated surfaces, respectively.…”

Section: Some Miscellaneous Ionsmentioning

confidence: 99%

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Low-Energy Ionic Collisions at Molecular Solids

et al. 2012

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Figure 2. Ion/surface collision spectrum recorded after collision of 30 eV benzene molecular ions at an H-SAM surface. The ion at m/z 91 corresponds to the addition of a methyl group followed by loss of H 2 and that at m/z 65 to further loss of C 2 H 2 . The peak at m/z 79 is due to a H atom abstraction reaction. The inset shows the collision process and some reaction products. Reprinted from ref 72.

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Current literature in mass spectrometry

2004

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Books, Reviews & Symposia; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (3 Weeks journals ‐ Search completed at 7th. Apr. 2004)

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Differentiation of isomeric oxygenated adsorbates using low-energy ion/surface collisions

Cited by 5 publications

References 49 publications

Preparative Linear Ion Trap Mass Spectrometer for Separation and Collection of Purified Proteins and Peptides in Arrays Using Ion Soft Landing

Preparative Linear Ion Trap Mass Spectrometer for Separation and Collection of Purified Proteins and Peptides in Arrays Using Ion Soft Landing

Low-Energy Ionic Collisions at Molecular Solids

Current literature in mass spectrometry

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