Display options
Cite
Baghbanzadeh M, Bowers CM, Rappoport D, et al. Charge Tunneling along Short Oligoglycine Chains. Angew Chem Int Ed Engl. 2015;54(49):14743-7doi: 10.1002/anie.201507271.
Baghbanzadeh, M., Bowers, C. M., Rappoport, D., Żaba, T., Gonidec, M., Al-Sayah, M. H., Cyganik, P., Aspuru-Guzik, A., & Whitesides, G. M. (2015). Charge Tunneling along Short Oligoglycine Chains. Angewandte Chemie (International ed. in English), 54(49), 14743-7. https://doi.org/10.1002/anie.201507271
Baghbanzadeh, Mostafa, et al. "Charge Tunneling along Short Oligoglycine Chains." Angewandte Chemie (International ed. in English) vol. 54,49 (2015): 14743-7. doi: https://doi.org/10.1002/anie.201507271
Baghbanzadeh M, Bowers CM, Rappoport D, Żaba T, Gonidec M, Al-Sayah MH, Cyganik P, Aspuru-Guzik A, Whitesides GM. Charge Tunneling along Short Oligoglycine Chains. Angew Chem Int Ed Engl. 2015 Dec 01;54(49):14743-7. doi: 10.1002/anie.201507271. Epub 2015 Oct 09. PMID: 26450132.
Copy Download .nbib Format: NLM
Share it on

Angew Chem Int Ed Engl. 2015 Dec 01;54(49):14743-7. doi: 10.1002/anie.201507271. Epub 2015 Oct 09.

Charge Tunneling along Short Oligoglycine Chains.

Angewandte Chemie (International ed. in English)

Mostafa Baghbanzadeh, Carleen M Bowers, Dmitrij Rappoport, Tomasz Żaba, Mathieu Gonidec, Mohammad H Al-Sayah, Piotr Cyganik, Alan Aspuru-Guzik, George M Whitesides

Affiliations

  1. Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St. Cambridge, MA 02138 (USA).
  2. Smoluchowski Institute of Physics, Jagiellonian University, ?ojasiewicza 11, 30-348 Krakow (Poland).
  3. Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC/CIBER-BBN), Cerdanyola del Vallès, 08193, Barcelona (Spain).
  4. Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St. Cambridge, MA 02138 (USA). [email protected].
  5. Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St. Cambridge, MA 02138 (USA). [email protected].
  6. Kavli Institute for Bionano Science and Technology, Harvard University, 29 Oxford Street, Cambridge, MA 02138 (USA). [email protected].
  7. Wyss Institute of Biologically Inspired Engineering, Harvard University, 60 Oxford St. Cambridge, MA 02138 (USA). [email protected].

PMID: 26450132 DOI: 10.1002/anie.201507271

Abstract

This work examines charge transport (CT) through self-assembled monolayers (SAMs) of oligoglycines having an N-terminal cysteine group that anchors the molecule to a gold substrate, and demonstrate that CT is rapid (relative to SAMs of n-alkanethiolates). Comparisons of rates of charge transport-using junctions with the structure Au(TS)/SAM//Ga2O3/EGaIn (across these SAMs of oligoglycines, and across SAMs of a number of structurally and electronically related molecules) established that rates of charge tunneling along SAMs of oligoglycines are comparable to that along SAMs of oligophenyl groups (of comparable length). The mechanism of tunneling in oligoglycines is compatible with superexchange, and involves interactions among high-energy occupied orbitals in multiple, consecutive amide bonds, which may by separated by one to three methylene groups. This mechanistic conclusion is supported by density functional theory (DFT).

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: biological conduction; density functional theory; oligopeptides; organic electronics; superexchange tunneling

Publication Types