Long-Range Tunneling Processes across Ferritin-Based Junctions

Karuppannan Senthil Kumar; Rupali Reddy Pasula; Sierin Lim; Christian A Nijhuis

doi:10.1002/adma.201504402

Long-Range Tunneling Processes across Ferritin-Based Junctions

Adv Mater. 2016 Mar 2;28(9):1824-30. doi: 10.1002/adma.201504402. Epub 2015 Dec 28.

Authors

Karuppannan Senthil Kumar¹, Rupali Reddy Pasula², Sierin Lim^{2

3}, Christian A Nijhuis^{1

4}

Affiliations

¹ Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
² School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore.
³ NTU-Northwestern Institute for Nanomedicine, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
⁴ Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, 117546, Singapore.

PMID: 26708136
DOI: 10.1002/adma.201504402

Abstract

The mechanism of long-range charge transport across tunneling junctions with monolayers of ferritin is investigated. It is shown that the mechanism can be switched between coherent tunneling, sequential tunneling, and hopping by changing the iron content inside the ferritin. This study shows that ferritins are an interesting class of biomolecules to control charge transport.

Keywords: EGaIn; biomolecular electronics; ferritin; long-range charge transport; tunneling junctions.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Electron Transport
Ferritins / chemistry
Ferritins / metabolism*
Iron / metabolism
Models, Molecular
Protein Conformation
Temperature

Substances

Ferritins
Iron