Chemical Nanolithography with Electron Beams

Gölzhäuser, Armin; Eck, Wolfgang; Geyer, W.; Stadler, Volker; Weimann, Thomas; Hinze, P.; Grunze, M.

doi:10.1002/1521-4095(200106)13:11%3c803::aid-adma806%3e3.0.co;2-w

Cited by 194 publications

(211 citation statements)

References 0 publications

Supporting

Mentioning

205

Contrasting

Unclassified

Order By: Relevance

“…Such processes can be both bond and site selective [2]. This selectivity is of high importance, e.g., in chemical lithography [3], nanofabrication [4,5] and for modification and functionalization of the surfaces [6,7]. Besides technological applications this specificity is relevant for radiation chemistry [8].…”

Section: Introductionmentioning

confidence: 64%

Electron driven processes in sulphur containing compounds CH3SCH3 and CH3SSCH3

Kopyra

Władziński

2015

Eur. Phys. J. D

View full text Add to dashboard Cite

Abstract. Dissociative electron attachment to gas phase dimethyl sulphide (CH3SCH3) and dimethyl disulphide (CH3SSCH3) has been studied by means of a crossed beams apparatus. Cleavage of the C-S bond within CH3SCH3 and the S-S bond within CH3SSCH3 is observed within a resonance in the energy range below 2 eV and visible preferentially via the appearance of the fragment CH2S− . The striking finding is that the intensity of CH2S − generated from CH3SSCH3 is more than two orders of magnitude higher than the intensity of the respective anionic fragment generated from CH3SCH3. Our results clearly demonstrate that the CH3SSCH3 molecule, which contains disulphide bridge is substantially more sensitive towards electron attachment resulting mainly in dissociation along the S-S bridge.

show abstract

Section: Introductionmentioning

confidence: 64%

Electron driven processes in sulphur containing compounds CH3SCH3 and CH3SSCH3

Kopyra

Władziński

2015

Eur. Phys. J. D

View full text Add to dashboard Cite

show abstract

“…13 While the decomposition and desorption processes prevail in aliphatic SAMs, cross linking is the dominant effect in the aromatic molecular layers, resulting in a quasipolymerization of the monomolecular film. [13][14][15][16][17][18][19] The schematic of cross-linked TP-DMT is shown in Fig. 5.…”

Section: Comparison Of the Electronic Structure Between Pristine Amentioning

confidence: 99%

“…[13][14][15][16][17][18][19] Such physical treatment leads to a quasipolymerization in aromatic thiol-derived SAMs and changes in electronic structure, 19 which we explore here in more detail for ͓1,1Ј;4Ј, 1Љ-terphenyl͔-4,4Љ-dimethanethiol ͑TPDMT͒. At issue is how the changes from an extra-molecular band structure to an intramolecular band structure ͑of the related quasipolymer͒ affect the dielectric properties.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure and polymerization of a self-assembled monolayer with multiple arene rings

et al. 2006

View full text Add to dashboard Cite

Tai, Y.; Zharnikov, M.; and Dowben, Peter A., "Electronic structure and polymerization of a self-assembled monolayer with multiple arene rings" (2006 We find evidence of intermolecular interactions for a self-assembled monolayer ͑SAM͒ formed from a large molecular adsorbate, ͓1,1Ј;4Ј,1Љ-terphenyl͔-4,4Љ-dimethanethiol, from the dispersion of the molecular orbitals with changing wave vector k. With the formation self-assembled molecular ͑SAM͒ layer, the molecular orbitals hybridize to electronic bands, with indications of significant band dispersion of the unoccupied molecular orbitals. The electronic structure is also seen to be dependent upon temperature, and cross linking between the neighbor molecules, indicating that the electronic structure may be subtly altered by changes in molecular conformation and packing.

show abstract

“…A large part of the interest has focussed on aromatic moieties as an alternative of alkane-based spacers. [6][7][8][9][10][11] Aromatic SAMs differ significantly from the aliphatic ones in geometry and intermolecular interactions, so they show different charge-transfer properties [12][13][14] and different behaviour during electron irradiation. 15,16 Here, we are interested in SAMs containing spacers formed by biphenyl (BP) groups, and, in particular, in the modifications of the structures of these films after the dehydrogenization process induced by electron irradiation.…”

Section: Introductionmentioning

confidence: 99%

First-principles investigation of electron-induced cross-linking of aromatic self-assembled monolayers on Au(111)

Cabrera-Sanfélix¹,

Arnau²,

Sánchez‐Portal³

2010

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

We have performed a density functional theory study of the possible layered geometries occurring after dehydrogenation of a self-assembled monolayer (SAM) of biphenylthiol molecules (BPTs) adsorbed on a Au(111), as it has been experimentally observed for low energy electron irradiated SAMs of 4'-nitro-1,1'-biphenyl-thiol adsorbed on a Au(111) surface. [Eck, W. et al., Advanced Materials 2000, 12, 805] Cross-link formation between the BPT molecules has been analyzed using different models with different degrees of complexity. We start by analyzing the bonding between biphenyl (BP) molecules in a lineal dimer and their characteristic vibration frequencies. Next, we consider the most stable cross-linked structures formed in an extended free-standing monolayer of fully dehydrogenated BP molecules. Finally, we analyze a more realistic model where the role of the Au(111) substrate and sulphur head groups is explicitly taken into account. In this more complex model, the dehydrogenated BPT molecules are found to interact covalently to spontaneously form "graphene-like" nanoflakes. We propose that these nanographenes provide plausible building-blocks for the structure of the carbon layers formed by electron irradiation of BPT-SAMs. In particular, it is quite tempting to visualize those structures as the result of the cross-link and entanglement of such graphene nanoflakes.

show abstract

Chemical Nanolithography with Electron Beams

Cited by 194 publications

References 0 publications

Electron driven processes in sulphur containing compounds CH3SCH3 and CH3SSCH3

Electron driven processes in sulphur containing compounds CH3SCH3 and CH3SSCH3

Electronic structure and polymerization of a self-assembled monolayer with multiple arene rings

First-principles investigation of electron-induced cross-linking of aromatic self-assembled monolayers on Au(111)

Contact Info

Product

Resources

About