Current-induced organic molecule-silicon bond breaking: consequences for molecular devices

被引：54

作者：

Patitsas, SN ^{[1
]}

Lopinski, GP ^{[1
]}

Hul'ko, O ^{[1
]}

Moffatt, DJ ^{[1
]}

Wolkow, RA ^{[1
]}

机构：

[1] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada

来源：

SURFACE SCIENCE | 2000年 / 457卷 / 03期

关键词：

chemisorption; desorption induced by electron stimulation; scanning tunneling microscopy; silicon;

D O I：

10.1016/S0039-6028(00)00468-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The current carrying capacity of individual organic molecules covalently bound to silicon has been studied. Adsorbates consisting exclusively of saturated C-C bonds were found to be entirely stable whereas adsorbates containing pi bonds could be controllably dislodged under modest conditions. The pi bonds act as a chromophore, taking energy from a scattered electron, energy that can be selectively channeled into Si-C bond breaking. The class of adsorbates that are dislodged is closely related to unsaturated molecules widely investigated for enhanced molecular wire character. It is predicted that molecular devices containing such molecules will fail when operated. Measures to avoid current-induced bond breaking are described. New processes based upon the controlled bond breaking phenomenon are suggested. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：L425 / L431

页数：7

共 37 条

[1] MOLECULAR RECTIFIERS
AVIRAM, A
RATNER, MA
[J]. CHEMICAL PHYSICS LETTERS, 1974, 29 (02) : 277 - 283
[2] Breaking individual chemical bonds via STM-induced excitations
Avouris, P
Walkup, RE
Rossi, AR
Akpati, HC
Nordlander, P
Shen, TC
Abeln, GC
Lyding, JW
[J]. SURFACE SCIENCE, 1996, 363 (1-3) : 368 - 377
[3] BARTELS L, PHYS REV LETT, V80
[4] Metastable adsorption of benzene on the Si(001) surface
Borovsky, B
Krueger, M
Ganz, E
[J]. PHYSICAL REVIEW B, 1998, 57 (08): : R4269 - R4272
[5] BOZACK MJ, 1986, SURF SCI, V177, P933
[6] Isolation of an intrinsic precursor to molecular chemisorption
Brown, DE
Moffatt, DJ
Wolkow, RA
[J]. SCIENCE, 1998, 279 (5350) : 542 - 544
[7] Electronically configurable molecular-based logic gates
Collier, CP
Wong, EW
Belohradsky, M
Raymo, FM
Stoddart, JF
Kuekes, PJ
Williams, RS
Heath, JR
[J]. SCIENCE, 1999, 285 (5426) : 391 - 394
[8] Molecular-wire behaviour in p-phenylenevinylene oligomers
Davis, WB
Svec, WA
Ratner, MA
Wasielewski, MR
[J]. NATURE, 1998, 396 (6706) : 60 - 63
[9] Electron transfer rates in bridged molecular systems: A phenomenological approach to relaxation
Davis, WB
Wasielewski, MR
Ratner, MA
Mujica, V
Nitzan, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (35) : 6158 - 6164
[10] POSITIONING SINGLE ATOMS WITH A SCANNING TUNNELING MICROSCOPE
EIGLER, DM
SCHWEIZER, EK
[J]. NATURE, 1990, 344 (6266) : 524 - 526

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