Laser desorption of metal cluster ions from modified metal surfaces

Gord, James R.; Buckner, Steven W.; Freiser, Ben S.

doi:10.1016/0009-2614(88)85264-3

Cited by 10 publications

(4 citation statements)

References 28 publications

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“…This process is accompanied by a strong decrease in the yield of all the types of ions desorbed from the surface. Note that the change during laser irradiation in the emission of ions from the gold surface preliminarily structured by laser radiation was observed earlier, although the temporal dynamics of the process have not been studied [ 11 ].…”

Section: Discussionmentioning

confidence: 99%

“…The impact of high-power pulsed radiation leads to the formation of a cloud of nanoparticles near the surface [ 7 ] as well as the appearance of various nanostructures on the metal surface with a size range from a few nanometers to several micrometers [ 8 , 9 , 10 ]. The laser nanostructuring of surfaces and/or laser “activation” also lowers the ion formation threshold and changes the ratio between the signal of Au + ions and the signal of Au n + (n ≥ 2) ions [ 11 ]. The decrease in the ion formation threshold on a nanostructured surface occurs due to a change in the mechanism of interaction of the laser radiation with the metal surface.…”

Section: Introductionmentioning

confidence: 99%

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Laser-Induced Ion Formation and Electron Emission from a Nanostructured Gold Surface at Laser Fluence below the Threshold for Plasma Formation

et al. 2023

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The laser formation of positive and negative ions on a nanostructured metal surface is observed at laser fluence below the plasma formation threshold. The laser radiation energy dependences of the yield of positive and negative Au ions and charged clusters as well as electrons from the laser-induced nanostructures on the surface of gold are obtained at laser fluence below the plasma formation threshold using a pulsed laser with a wavelength of 355 nm and a pulse duration of 0.37 ns. It is shown that the ratio of the signals of positive and negative ions is constant over the entire range of the laser radiation energies, while the ion signal dependence on the laser radiation energy is described by a power function with an exponent of 9. The role of gold nanoparticles with a size of less than 5 nm in the formation of Au ions and charged Au clusters is discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laser-Induced Ion Formation and Electron Emission from a Nanostructured Gold Surface at Laser Fluence below the Threshold for Plasma Formation

et al. 2023

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“…[20][21][22][23][24][25] Most prior FT-ICR MS analysis of gasphase metal ion-molecule reactions has been based on ions generated by electron ionization of volatile metal complexes or laser desorption/ionization to generate metal ions directly. [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Here, electrospray ionization serves to transport ionic complexes intact into the gas phase.…”

Section: Introductionmentioning

confidence: 99%

“…With Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), gas-phase ion−molecule reaction rate constants and equilibria are readily determined. − Most prior FT-ICR MS analysis of gas-phase metal ion−molecule reactions has been based on ions generated by electron ionization of volatile metal complexes or laser desorption/ionization to generate metal ions directly. − Here, electrospray ionization serves to transport ionic complexes intact into the gas phase.…”

Section: Introductionmentioning

confidence: 99%

Gas-Phase Ligand Exchange in a Square-Planar Rhodium(I) Complex Proceeding by Dissociative Exchange: ESI FT-ICR MS and DFT Evidence

et al. 2003

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Although the kinetics of square-planar d8 ligand-substitution reactions have been explored extensively in solution, no such studies of gas-phase systems have been reported. Measurement of gas-phase ligand exchange offers the advantage that the exchange mechanism is readily determined in the absence of solvent effects. The complex trans-Rh(PPh3)2CO(4-picoline)+ substitutes pyridine for its 4-picoline ligand readily in the gas phase but also loses CO during the reaction. The double-resonance experiments show that its primary substitution pathway proceeds dissociatively, unlike almost all solution ligand substitutions for Pt(II) and Pd(II). The density functional calculations reveal that the bond energies of Rh-4-picoline, Rh-pyridine, and Rh−CO are similar enough that CO loss might be expected. In support of the dissociative mechanism, the calculations also show five-coordinate intermediates for the associative pathway to be relatively high in energy.

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Fourier transform ion cyclotron resonance studies of sputtered metal cluster ions: The chemistry of Cun+ with O2

Irion

Selinger

1989

Chemical Physics Letters

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Laser desorption of metal cluster ions from modified metal surfaces

Cited by 10 publications

References 28 publications

Laser-Induced Ion Formation and Electron Emission from a Nanostructured Gold Surface at Laser Fluence below the Threshold for Plasma Formation

Laser-Induced Ion Formation and Electron Emission from a Nanostructured Gold Surface at Laser Fluence below the Threshold for Plasma Formation

Gas-Phase Ligand Exchange in a Square-Planar Rhodium(I) Complex Proceeding by Dissociative Exchange: ESI FT-ICR MS and DFT Evidence

Fourier transform ion cyclotron resonance studies of sputtered metal cluster ions: The chemistry of Cun+ with O2

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