التفاصيل البيبلوغرافية
| العنوان: |
Distance Dependence of the Charge Transfer Rate for Peptide Nucleic Acid Monolayersâ. |
| المؤلفون: |
Amit Paul1, Richard M. Watson1, Emil Wierzbinski1, Kathryn L. Davis1, Allen Sha1, Catalina Achim1, David H. Waldeck1 |
| المصدر: |
Journal of Physical Chemistry B. Nov2010, Vol. 114 Issue 45, p14140-14148. 9p. |
| مصطلحات موضوعية: |
*CHARGE transfer, *FERROCENE, *CHARGE exchange, *ELECTRONS, *MOLECULES, *MOLECULAR self-assembly, *NUCLEIC acids |
| مستخلص: |
Charge transfer studies have been performed for self-assembled monolayers of single-stranded and double-stranded peptide nucleic acids (PNAs) having a C-terminus cysteine and an N-terminus ferrocene group as a redox reporter. The decay of the charge transfer rate with distance was strong for short single-stranded PNA molecules and weak for long single-stranded and double-stranded PNAs. Possible mechanisms for this âsofteningâ of the distance dependence are discussed. The nature of the mechanism change can be explained by a transition of the charge transport mechanism from superexchange-mediated tunneling for short PNAs to a âhoppingâ mechanism for long PNAs. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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