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SOLID STATE & STRUCTURAL CHEMISTRY UNIT

INDIAN INSTITUTE OF SCIENCE

SEMINAR
Speaker: Aiswarya Abhisek Mohapatra

Title:
Single-Molecular Conductance: Probed using Scanning Tunnelling Microscopy

Date & Time: 30/11/2017 at 4.00 P.M.
Venue: SSCU AUDITORIUM

Abstract :
Research using a single molecule as a diode circuit element has gained impetus since Aviram and Ratner proposal, where they suggested using a single molecule as a diode circuit element. In recent past, this field has advanced
tremendously and the primary interest is miniaturization of circuit elements using the single molecules as electronic components. Single-molecule devices are also used as test beds for understanding and controlling electron transfer
across metal/organic interfaces. In this talk, I will discuss the scanning tunnelling microscope break-junction technique for measuring conductance through single molecule junctions. I will present experimental results illustrating
how different linker groups in the molecule affect single-molecule junctions. I shall discuss the effect of substituents, chain length and molecular conformation on molecular conductance.

References:

1. Aviram, A.; Ratner, M. A. Molecular rectifiers Chem. Phys. Lett. 1965, 29, 277-283

2. Su, T. A.; Neupane, M. et al. Chemical principles of single-molecule electronics Nat. Rev. Mater. 2016, 1, 1-15

3. Meisner, J. S.; Ahn, S. et al. Importance of direct metal-π coupling in electronic transport through conjugated single-molecule junctions J. Am. Chem. Soc. 2012, 134, 20440−20445

4. Venkataraman, L.; Klare, J. E. et al. Single molecule circuits with well-defined molecular
ALL ARE CORDIALLY INVITED TO ATTEND

 

Convener

Bitnami