Adsorption geometries of 1,9-decadiene on Si(111) 7×7 studied by scanning tunneling microscopy

Shachal, D.; Manassen, Yishay

doi:10.1116/1.589456

Cited by 5 publications

(7 citation statements)

References 11 publications

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“…Very similar [312]. c 2007, The American Physical Society conclusions have also been reached for the attachment of 1,9-decadiene, as reported by the same group [313].…”

Section: Si(111)-7×7 Chemistry: Parallels Between Surface Dimers and supporting

confidence: 71%

Chemical manipulation of multifunctional hydrocarbons on silicon surfaces

Leftwich

Teplyakov

2007

Surface Science Reports

123

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“…Very similar [312]. c 2007, The American Physical Society conclusions have also been reached for the attachment of 1,9-decadiene, as reported by the same group [313].…”

Section: Si(111)-7×7 Chemistry: Parallels Between Surface Dimers and supporting

confidence: 71%

Chemical manipulation of multifunctional hydrocarbons on silicon surfaces

Leftwich

Teplyakov

2007

Surface Science Reports

123

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“…The adsorption of alkane chains terminated by carbon−carbon double bonds at the Si(111)-7 × 7 surface was studied by Manassen and co-workers employing room-temperature scanning tunneling microscopy (STM). ,− The molecules studied by these workers were 1,13-tetradecadiene, 1,9-decadiene, 1,6-heptadiene, and 1,7-octadiene . All attached to the Si(111)-7 × 7 surface by opening their terminal double bonds and forming a total of four σ bonds with silicon rest atoms and adatoms.…”

Section: Introductionmentioning

confidence: 99%

STM Study of the Conformation and Reaction of Long-Chain Haloalkanes at Si(111)-7 × 7

2006

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Scanning tunneling microscopy (STM) has been used to study the adsorption of 1-fluoro-, 1-chloro-, and 1-bromo-substituted C(12) alkanes at the Si(111)-7 x 7 surface, at temperatures from 300 to 500 K. We report self-assembly of these physisorbed adsorbates, C(12)H(25)X, to form approximately circular corrals, (C(12)H(25)X)(2), with charge transfer to a corralled adatom in each case (cf. Dobrin et al. Surf. Sci. 2006, 600, L43). The corrals comprised pairs of semicircular horizontal long-chain molecules stable to approximately 100 degrees C. At > or =150 degrees C, the corrals desorbed or reacted locally to imprint a halogen atom, X-Si, and an adjacent alkane residue, R-Si. The corral height profiles, together with the location of the imprinted X-Si resulting from thermal or electron-induced surface reaction, led to a picture of the molecular configurations in these haloalkane corrals, (C(12)H(25)X)(2), X = F, Cl, Br, and the dichloro corrals, 1,12-dichlorododecane, (ClC(12)H(24)Cl)(2).

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“…The distances between the different adatoms in the 7 × 7 unit cell are shown in FIGURE 1. We have taken 37,38 four different dienes with an aliphatic chain with lengths that enable the reaction between two double bonds at the edge of the molecule and the different neighboring adatom-rest atom pairs. By changing the length of the chains in the diene we can change the fitting between the two reacting bonds and the binding sites on the surface.…”

Section: Methodsmentioning

confidence: 99%

“…Increasing the length of the aliphatic chain (1,9-decadiene) gives a much larger number of bridging pairs. 38 Different types of such pairs were identified.…”

Section: Methodsmentioning

confidence: 99%

Scanning Tunneling Microscopy (STM) on Physisorbed Chemical Groups of Individual Immobilized Molecules

Manassen¹,

Shachal²

1998

Annals of the New York Academy of Sciences

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Most scanning tunneling microscopy (STM) studies of adsorbed molecules are performed either on molecules that are chemically bound to the surface or are part of a molecular monolayer. In the first case, the chemical reaction with the surface changes the surface local density of states. In the second one, the electrons tunnel through a physisorbed molecule. In the study described in this paper STM imaging is performed on isolated molecules immobilized on a clean semiconductor surface where atomic resolution is observed. This is an intermediate case. The adsorption behavior of diene molecules on Si(111)7 × 7 was investigated. The molecules adsorb by reaction of the double bonds on the surface. In the reaction, the C=C bond is opened to create two neighboring Si‐C bonds. Two such C‐C bonds are used to immobilize the chain to the surface. The adsorption chemistry is affected not only by the nature of the Si‐C bond but also by steric limitations. Performing STM imaging on such systems ensures that the position of the immobilized chemical group (in this case an aliphatic chain) could be clearly identified and that it was possible to image parts of the molecule that are not chemically bound to the surface. STM images of 1,13‐tetradecadiene revealed a white protrusion in the location of the aliphatic chain. The increase in transmission is explained by an additional channel for tunneling: through bond tunneling. Long‐range electron transfer through molecules is a widely known chemical and biochemical process. This observation opens the possibility to investigate this fundamental phenomenon in large details. The potential applications for molecular electronics are discussed.

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Adsorption geometries of 1,9-decadiene on Si(111) 7×7 studied by scanning tunneling microscopy

Cited by 5 publications

References 11 publications

Chemical manipulation of multifunctional hydrocarbons on silicon surfaces

Chemical manipulation of multifunctional hydrocarbons on silicon surfaces

STM Study of the Conformation and Reaction of Long-Chain Haloalkanes at Si(111)-7 × 7

Scanning Tunneling Microscopy (STM) on Physisorbed Chemical Groups of Individual Immobilized Molecules

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