Electronic Band Formation at Organic−Metal Interfaces:  Role of Adsorbate−Surface Interaction

Dutton, Gregory; Zhu, Xiaoyang

doi:10.1021/jp012485z

Cited by 26 publications

(28 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results are shown in Table 2. The coverage is about the same (ã1.4 × 10 13 ) for all the monolayers within the error of the radioactive measurements.…”

Section: Methodssupporting

confidence: 56%

See 1 more Smart Citation

Electron capturing by DNA

Ray¹,

Daube²,

Cohen³

et al. 2007

Israel Journal of Chemistry

View full text Add to dashboard Cite

Many of the mutagenic or lethal effects of ionization radiation can be attributed to damage caused to the DNA by low‐energy electrons. In order to gain insight on the parameters affecting this process, we measured the low‐energy electron (<2 eV) transmission yield through self‐assembled monolayers of short DNA‐oligomers. The electrons that are not transmitted are captured by the layer. Hence, the transmission reflects the capturing efficiency of the electrons by the layer. The dependence of the capturing probability on the base sequence was studied as well as the state of the captured electrons. In addition, two‐photon photoelectron (TPPE) spectroscopy studies were performed that established the binding energy of electrons on the DNA. We found that the capturing probability scales with the number of G bases in the single‐stranded oligomers and depends on their clustering level. Using TPPE spectroscopy, we found that once captured, the electrons do not reside on the bases. Rather, the state of the captured electrons is insensitive to the oligomer's sequence. A model is proposed for the special role of guanine, based on its low oxidation potential. Double‐stranded DNA does not capture electrons as efficiently as single‐stranded oligomers; however, once captured, the electrons are more strongly bound than to the single strands.

show abstract

“…The results are shown in Table 2. The coverage is about the same (ã1.4 × 10 13 ) for all the monolayers within the error of the radioactive measurements.…”

Section: Methodssupporting

confidence: 56%

“…To explore the state of the captured electrons on the adsorbed layer, we conducted two-photon photoemission (TPPE) studies. 13,32 In these experiments, electrons are excited in the metal substrate with photon energy below the substrate's work-function. Some of these electrons are transferred to the LUMO of the adsorbed layer.…”

Section: Methodsmentioning

confidence: 99%

Electron capturing by DNA

Ray¹,

Daube²,

Cohen³

et al. 2007

Israel Journal of Chemistry

View full text Add to dashboard Cite

show abstract

“…At the same time, their energy is not commensurate with direct excitation from the "f-LUMO" either. Hence, these states are likely populated by scattering from Cu(111) electrons and correspond thus to molecular anion states, a hallmark of strong coupling between the molecular and surface electronic states [35][36][37][38]. Such strong coupling in the first molecular layer may be expected given the formation of an "f-LUMO", and further suggests mixing of molecular and (bulk) electronic states of Cu (111) [39].…”

Section: Excited Statesmentioning

confidence: 99%

Interplay of local and global interfacial electronic structure of a strongly coupled dipolar organic semiconductor

Ilyas

Monti

2014

Phys. Rev. B

View full text Add to dashboard Cite

We investigate the consequences of strong electronic coupling at the organic semiconductor / metal interface in both the ground and excited state manifold for the case of chloro-boron subphthalocyanine on Cu(111). Using a combination of low-temperature scanning tunneling microscopy, ultraviolet and angle-resolved two-photon photoemission spectroscopy, we are able to connect local electronic interactions at the interface with thin film structure despite complex growth in the sub-monolayer regime. We show that strong coupling leads to charge-transfer from the surface to the molecule and are able to correlate this observation with the specific molecular adsorption geometry. Strong coupling further results in molecular excited state anion resonances and is responsible for autoionization of highly excited image potential states, reporting on the heterogeneous electronic environment in these thin films. This study provides a step towards disentangling interfacial electronic interactions at complex organic / metal interfaces.3

show abstract

“…Chemisorption is a well known phenomenon between organic molecules and metals (Dutton & Zhu, 2001;Crispin et al, 2002;Eremtchenko et al, 2004;Knupfer & Schwieger, 2005;Lee & Zaera, 2006). The published data indicate that the metal interacts only with some atoms of the organic molecule, creating new chemical bonds between them (Crispin et al, 2002;Eremtchenko et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

On the interaction of azithromycin monohydrate with metallic containers

Montejo-Bernardo

García-Granda

Bayod³

et al. 2006

J Appl Crystallogr

View full text Add to dashboard Cite

The monohydrate form of azithromycin (an antibiotic semisynthetic derivative of erythromycin A) is difficult to manipulate due to its great propensity to stick to metallic surfaces (during crystallization, drying, grinding, etc.). In this paper, this behaviour is explained on the basis of the conformation and packing of the azithromycin molecules in this crystal form. In particular, the crystal habit favours interaction between the N and O atoms with the metal through one particular crystal face. research papers J. Appl. Cryst. (2006). 39, 826-830 J. Montejo-Bernardo et al. Azithromycin monohydrate 827

show abstract

Electronic Band Formation at Organic−Metal Interfaces: Role of Adsorbate−Surface Interaction

Cited by 26 publications

References 30 publications

Electron capturing by DNA

Electron capturing by DNA

Interplay of local and global interfacial electronic structure of a strongly coupled dipolar organic semiconductor

On the interaction of azithromycin monohydrate with metallic containers

Contact Info

Product

Resources

About