Distance-Dependent Relaxation Shifts of Photoemission and Auger Energies for Xe on Pd(001)

Kaindl, G.; Chiang, T.‐C.; East̀man, D. E.; Himpsel, F. J.

doi:10.1103/physrevlett.45.1808.2

Cited by 20 publications

(27 citation statements)

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“…The positive charges that are produced by the loss of photoelectrons 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 9 discharge more easily in loosely packed SAMs. [32][33][34] An observed lower binding energy corresponds to a reduction in the packing of the adsorbates in the SAMs, supporting the conclusion that the SAM formed from N3PrBnDT packs more densely than that of the SAM formed from N3BnDT.…”

Section: Analysis By Xps Xps Provides Important Information Regardinsupporting

confidence: 70%

Poly(l-lysine) Interfaces via Dual Click Reactions on Surface-Bound Custom-Designed Dithiol Adsorbates

2015

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Surfaces modified with poly(L-lysine) can be used to immobilize selected biomolecules electrostatically. This report describes the preparation of a set of self-assembled monolayers (SAMs) from three different azide-terminated adsorbates as platforms for performing controlled surface attachments and as a means of determining the parameters that afford stable poly(L-lysine)-modified SAM surfaces having controlled packing densities. A maleimide-terminated alkyne linker was "clicked" to the azide-terminated surfaces via a copper-catalyzed cycloaddition reaction to produce the attachment sites for the polypeptides. A thiol-Michael addition was then used to immobilize cysteine-terminated poly(L-lysine) moieties on the gold surface, avoiding adsorbate self-reactions with this two-step procedure. Each step in this process was analyzed by ellipsometry, X-ray photoelectron spectroscopy, polarization modulation infrared reflection-absorption spectroscopy, and contact angle goniometry to determine which adsorbate structure most effectively produced the targeted polypeptide interface. Additionally, a series of mixed SAMs using an azidoalkanethiol in combination with a normal alkanethiol having an equivalent alkyl chain were prepared to provide data to determine how dilution of the azide reactive site on the SAM surface influences the initial click reaction. Overall, the collected data demonstrate the advantages of an appropriately designed bidentate absorbate and its potential to form effective platforms for biomolecule surface attachment via click reactions.

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Section: Analysis By Xps Xps Provides Important Information Regardinsupporting

confidence: 70%

Poly(l-lysine) Interfaces via Dual Click Reactions on Surface-Bound Custom-Designed Dithiol Adsorbates

2015

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“…Although the occurrence of FS screening effects is well-known in photoemission spectroscopy, measured E B are very often discussed neglecting these effects and indeed the interpretation of energy shifts succeed in most cases. However, FS effects impact both the measured absolute E B in solids [51] and especially the measured E B at interfaces [52]. The probably most important result in this context was the successfully assertion of energetic shifts observed in Xe multilayers to FS effects [52].…”

Section: Photoemission Spectroscopymentioning

confidence: 99%

“…However, FS effects impact both the measured absolute E B in solids [51] and especially the measured E B at interfaces [52]. The probably most important result in this context was the successfully assertion of energetic shifts observed in Xe multilayers to FS effects [52].…”

Section: Photoemission Spectroscopymentioning

confidence: 99%

Electronic properties of interfaces between model organic semiconductors and metals

Knupfer

Peisert

2004

phys. stat. sol. (a)

123

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We present a summary of recent studies of the interface properties of interfaces that are formed between well-established molecular organic semiconductors and various metals. The energy level alignment, the formation of interface dipoles, a possible band bending and interactions at the interfaces have been investigated using photoemission spectroscopy, while polarization-dependent X-ray absorption spectroscopy provided information on the molecular orientation at the interfaces. The observed interface characteristics reach from physisorption to a reaction depending upon both the substrate and the organic molecule under investigation. Different contributions to the often observed interface dipoles are discussed.

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“…These systems can be seen as prototypical for bulk state insulators. Since, in x-ray photoelectron spectroscopy ͑XPS͒ and Auger electron spectroscopy ͑AES͒ from clusters, bulk and surface contributions can well be resolved, [3][4][5][6] we can study the effect of PCI as a function of coordination number. By studying clusters, created in a molecular beam containing both monomers and clusters of various sizes, a direct comparison with the monomer is possible on an absolute energy scale.…”

mentioning

confidence: 99%

Postcollision interaction in noble gas clusters: Observation of differences in surface and bulk line shapes

Lindblad

Fink

Bergersen

et al. 2005

The Journal of Chemical Physics

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The surface and bulk components of the x-ray photoelectron spectra of free noble gas clusters are shown to display differences in the influence of postcollision interaction between the photoelectron and the Auger electron on the spectral line shape; the bulk component is observed to be less affected than the surface and atomic parts of the spectra. A model for postcollision interaction in nonmetallic solids and clusters is also provided which takes the polarization screening into account. Core-level photoelectron spectra of Ar, Kr, and Xe have been recorded to verify the dependence of the postcollision interaction effect on the polarizability of the sample.

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Distance-Dependent Relaxation Shifts of Photoemission and Auger Energies for Xe on Pd(001)

Cited by 20 publications

References 0 publications

Poly(l-lysine) Interfaces via Dual Click Reactions on Surface-Bound Custom-Designed Dithiol Adsorbates

Poly(l-lysine) Interfaces via Dual Click Reactions on Surface-Bound Custom-Designed Dithiol Adsorbates

Electronic properties of interfaces between model organic semiconductors and metals

Postcollision interaction in noble gas clusters: Observation of differences in surface and bulk line shapes

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