Abstract:
:The electrical transport through self-assembled monolayers of alkanedithiols was studied in large-area molecular junctions and described by the Simmons model [Simmons JG (1963) J Appl Phys 34:1793-1803 and 2581-2590] for tunneling through a practical barrier, i.e., a rectangular barrier with the image potential included. The strength of the image potential depends on the value of the dielectric constant. A value of 2.1 was determined from impedance measurements. The large and well defined areas of these molecular junctions allow for a simultaneous study of the capacitance and the tunneling current under operational conditions. Electrical transport for octanedithiol through tetradecanedithiol self-assembled monolayers up to 1 V can simultaneously be described by a single effective mass and a barrier height. There is no need for additional fit constants. The barrier heights are in the order of 4-5 eV and vary systematically with the length of the molecules. Irrespective of the length of the molecules, an effective mass of 0.28 was determined, which is in excellent agreement with theoretical predictions.
journal_name
Proc Natl Acad Sci U S Aauthors
Akkerman HB,Naber RC,Jongbloed B,van Hal PA,Blom PW,de Leeuw DM,de Boer Bdoi
10.1073/pnas.0701472104subject
Has Abstractpub_date
2007-07-03 00:00:00pages
11161-6issue
27eissn
0027-8424issn
1091-6490pii
0701472104journal_volume
104pub_type
杂志文章,评审abstract::Bacteriorhodopsin from Halobacterium halobium has been solubilized in the nonionic detergent Triton X-100. The circular dichroic spectrum and hydrodynamic properties indicate that the structure of this protein in the detergent is not significantly altered from that of the native membrane-bound form. Bacteriorhodopsin ...
journal_title:Proceedings of the National Academy of Sciences of the United States of America
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更新日期:2015-06-02 00:00:00
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更新日期:1990-09-01 00:00:00
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更新日期:1982-04-01 00:00:00