Dissociative scattering of polyatomic ions from a liquid surface: CF3+ on a perfluoropolyether film

Koppers, W.R.; Beijersbergen, Jaap H. M.; Weeding, T. L.; Kistemaker, Piet G.; Kleyn, Aart W.

doi:10.1063/1.474189

Cited by 43 publications

(52 citation statements)

References 59 publications

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“…Due to their chemical structures, these surfaces are especially suitable for ion/ surface reaction studies. 180,196,197 The closely related Langmuir-Blodgett films ͑L-B͒, 24,83 and amorphous liquid films, such as perfluoropolyether films, 52,148,198,199 have also been used for ion/surface studies. A difference between various surfaces that has probably not received sufficient attention is the domain size over which the surface is ordered.…”

Section: F Target Surfacementioning

confidence: 99%

“…19, where energy-resolved mass spectra ͑ERMS͒ curves are shown. The effects of collision energy and the scattering angle 52 have been considered. By comparing experimental SID breakdown curves with photoelectron-photoion coincidence data, similar conversion efficiencies of about 18% for hydrocarbon and 25% for fluorocarbon surfaces have been reported.…”

Section: Surface-induced Dissociationmentioning

confidence: 99%

See 1 more Smart Citation

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Grill¹,

Shen²,

Evans³

et al. 2001

Review of Scientific Instruments

202

249

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Articles you may be interested inMeasuring the internal energies of species emitted from hypervelocity nanoprojectile impacts on surfaces using recalibrated benzylpyridinium probe ions High-energy ions and atoms sputtered and reflected from a magnetron source for deposition of magnetic thin films J. Vac. Sci. Technol. A 23, 671 (2005); 10. 1116/1.1943452 Surface induced dissociations of protonated ethanol monomer, dimer and trimer ions: Trimer break-down graph from the collision energy dependence of projectile fragmentation An overview of gaseous ion/surface collisions is presented, with special emphasis on the behavior of polyatomic projectile ions at hyperthermal collision energies ͑1-100 eV͒ and the instrumentation needed for such studies. The inelastic and reactive processes occurring during ion/surface collisions are described in terms of several archetypes, viz., elastic and quasielastic scattering, chemical sputtering leading to release of surface material, inelastic scattering leading to surface-induced dissociation ͑SID͒ of the projectile, ion/surface reactions, and soft landing. Parameters that are important in ion/surface interactions are discussed, including the interaction time, the conversion of translational to internal energy, the translational energies of the scattered ions, the effects of scattering angle, and the influence of the nature of the surface. Different types of tandem mass spectrometers, built specifically to study ion/surface collision phenomena, are discussed and the advantages and disadvantages of the individual designs are compared. The role of SID as a technique in bioanalytical mass spectrometry is illustrated and this inelastic collision experiment is compared and contrasted with gas-phase collision-induced dissociation, the standard method of tandem mass spectrometry. Special emphasis is placed on reactive scattering including the use of ion/surface reactions for surface chemical analysis and for surface chemical modification.

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Section: F Target Surfacementioning

confidence: 99%

Section: Surface-induced Dissociationmentioning

confidence: 99%

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Grill¹,

Shen²,

Evans³

et al. 2001

Review of Scientific Instruments

202

249

View full text Add to dashboard Cite

show abstract

“…Organic thin films on metal substrates substantially reduce neutralization of projectile ions. Surfaces commonly used in SID experiments include self-assembled monolayers of n-alkanethiols (HSAM) and their fluorinated analogs (FSAM) on gold or silver (Morris et al, 1992;Cooks et al, 1994;Dongre, Somogyi, & Wysocki, 1996), thin films of a liquid perfluoropolyether (Koppers et al, 1997), Langmuir-Blodgett (L-B) films (Gu et al, 1999) or highly oriented pyrolytic graphite (Beck et al, 1996a). Thin films of insulating materials (such as metal halides or diamond) on metal substrates have a great potential for efficient dissociation of large molecules (Laskin & Futrell, 2003b).…”

Section: Choice Of the Sid Targetmentioning

confidence: 99%

Activation of large lons in FT‐ICR mass spectrometry

Laskin

Futrell

2004

Mass Spectrometry Reviews

177

146

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The advent of soft ionization techniques, notably electrospray and laser desorption ionization methods, has enabled the extension of mass spectrometric methods to large molecules and molecular complexes. This both greatly extends the applications of mass spectrometry and makes the activation and dissociation of complex ions an integral part of these applications. This review emphasizes the most promising methods for activation and dissociation of complex ions and presents this discussion in the context of general knowledge of reaction kinetics and dynamics largely established for small ions. We then introduce the characteristic differences associated with the higher number of internal degrees of freedom and high density of states associated with molecular complexity. This is reflected primarily in the kinetics of unimolecular dissociation of complex ions, particularly their slow decay and the higher energy content required to induce decomposition-the kinetic shift (KS). The longer trapping time of Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) significantly reduces the KS, which presents several advantages over other methods for the investigation of dissociation of complex molecules. After discussing general principles of reaction dynamics related to collisional activation of ions, we describe conventional ways to achieve single-and multiple-collision activation in FT-ICR MS. Sustained off-resonance irradiation (SORI)-the simplest and most robust means of introducing the multiple collision activation process-is discussed in greatest detail. Details of implementation of this technique, required control of experimental parameters, limitations, and examples of very successful application of SORI-CID are described. The advantages of high mass resolving power and the ability to carry out several stages of mass selection and activation intrinsic to FT-ICR MS are demonstrated in several examples. Photodissociation of ions from small molecules can be effected using IR or UV/vis lasers and generally requires tuning lasers to specific wavelengths and/ or utilizing high flux, multiphoton excitation to match energy levels in the ion. Photodissociation of complex ions is much easier to accomplish from the basic physics perspective. The quasi-continuum of vibrational states at room temperature makes it very easy to pump relatively large amounts of energy into complex ions and infrared multiphoton dissociation (IRMPD) is a powerful technique for characterizing large ions, particularly biologically relevant molecules. Since both SORI-CID and IRMPD are slow activation methods they have many common characteristics. They are also distinctly different because SORI-CID is intrinsically selective (only ions that have a cyclotron frequency close to the frequency of the excitation field are excited), whereas IRMPD is not (all ions that reside on the optical path of the laser are excited). There are advantages and disadvantages to each technique and in many applications they complement each other. In contrast wi...

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“…As a new surface analysis method, reactive ion scattering (RIS) has been developed and actively investigated in recent years [1][2][3][4][5][6][7][8][9][10][11]. RIS exploits the reactive processes taking place between low energy (<100 eV) projectile ions and surfaces.…”

Section: Introductionmentioning

confidence: 99%

Evidence for Eley-Rideal abstraction mechanism in reactive ion scattering of Cs+ from Pt(111) adsorbed with CO and CO2

2007

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Dissociative scattering of polyatomic ions from a liquid surface: CF3+ on a perfluoropolyether film

Cited by 43 publications

References 59 publications

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Activation of large lons in FT‐ICR mass spectrometry

Evidence for Eley-Rideal abstraction mechanism in reactive ion scattering of Cs+ from Pt(111) adsorbed with CO and CO2

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