ISSN:
1432-1327
Keywords:
Key words Coherent electron transfer
;
Three-level electron transfer
;
In situ STM
;
Azurin
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract Three-level electron transfer follows superexchange patterns when the intermediate electronic level is off-resonance with the donor and acceptor levels. Close to resonance, new patterns emerge where the intermediate level is temporarily populated in vibrationally coherent or incoherent modes. We discuss energy and distance relations associated with such electron transfer modes. These appear to accord with fast electron transfer in several chemical and biological systems. We also discuss some recent observations on in situ scanning tunnelling microscopy of metalloproteins and large transition metal complexes which enable, in principle, a distinction between superexchange, coherent, and sequential three-level electron transfer.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s007750050226
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