Electronic structure and STM images of self-assembled styrene lines on a Si(100) surface

Hofer, Werner A.; Fisher, AJ; Lopinski, Gregory P.; Wolkow, Robert A.

doi:10.1016/s0009-2614(02)01406-9

Cited by 36 publications

(54 citation statements)

References 10 publications

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“…[101] In addition to a strong Si-C bond in many of the single-molecule experiments on Si, the interactions of the molecular energy levels with the semiconductor bands in Si can be exploited to achieve useful electronic effects. [19,24] Again, these studies illustrate important aspects of molecular conduction, but they also show that progress toward reproducible and stable single-molecule devices has many obstacles to overcome based on the high sensitivity of conductance to the details of molecular geometry, contact methods, and the surrounding environment.…”

Section: Single-molecule Junctionsmentioning

confidence: 92%

“…This collection of techniques made it possible to image individual molecules on surfaces, or rather the electronic structure of the molecules, and further characterize molecular behavior using scanning tunneling spectroscopy (STS). [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] The experiment is depicted generally in Figure 2A, which shows an alkanethiolate monolayer adsorbed at a solid support (e.g., Au) and interrogated with a scanning tunneling microscopy (STM) or conducting probe atomic force microscopy (AFM) tip. The red molecule in Figure 2A is active, and in practice can be a single molecule or a small ensemble of molecules.…”

Section: Experimental Paradigmsmentioning

confidence: 99%

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Progress with Molecular Electronic Junctions: Meeting Experimental Challenges in Design and Fabrication

2009

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Molecular electronics seeks to incorporate molecular components as functional elements in electronic devices. There are numerous strategies reported to date for the fabrication, design, and characterization of such devices, but a broadly accepted example showing structure-dependent conductance behavior has not yet emerged. This progress report focuses on experimental methods for making both single-molecule and ensemble molecular junctions, and highlights key results from these efforts. Based on some general objectives of the field, particular experiments are presented to show progress in several important areas, and also to define those areas that still need attention. Some of the variable behavior of ostensibly similar junctions reported in the literature is attributable to differences in the way the junctions are fabricated. These differences are due, in part, to the multitude of methods for supporting the molecular layer on the substrate, including methods that utilize physical adsorption and covalent bonds, and to the numerous strategies for making top contacts. After discussing recent experimental progress in molecular electronics, an assessment of the current state of the field is presented, along with a proposed road map that can be used to assess progress in the future.

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Section: Single-molecule Junctionsmentioning

confidence: 92%

Section: Experimental Paradigmsmentioning

confidence: 99%

Progress with Molecular Electronic Junctions: Meeting Experimental Challenges in Design and Fabrication

2009

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“…Different methods of initiation of this chain reaction and a variety of measurements with possible applications to molecular conductance have recently focused on this molecule and similar systems on a series of substrates [188,208,222,411, [427][428][429][430][431][432][433][434][435][436][437][438]. It is worth noting that in the case of radical initiation with TEMPO [256,420], this species can serve both as the initiator of the reaction and as a protecting group, as illustrated in Fig.…”

Section: Chemistry Of Partially Hydrogen-covered Silicon Surfacesmentioning

confidence: 99%

Chemical manipulation of multifunctional hydrocarbons on silicon surfaces

Leftwich

Teplyakov

2007

Surface Science Reports

123

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“…Despite the increasing interest about alkene adsorption on Si(100) surface, only few studies address its theoretical modelling: most of existing works [22][23][24][25][26][27] dealt with the adsorption geometries on finite clusters or the reaction pathways, but generally did not include the study of the electronic properties. In this letter, we present an ab initio investigation of the adsorption of styrene molecules on Si(100)-(2x1) surfaces.…”

mentioning

confidence: 99%