Conductance switching and many-valued logic in porphyrin assemblies

Elise Yu-Tzu Li, Nicola Marzari

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We investigate quantum interference in the transport properties of porphyrin-based molecular devices, and are able to develop a minimal but qualitatively accurate model of conductance based on the maximally localized Wannier functions of just the isolated molecule. We find that transmission at or near the Fermi level can be engineered to vary by orders of magnitude in response to hydrogen tautomerization in the inner ring, a recently developed experimental capability. This allows us to suggest that tape porphyrins can act as molecular-size memory units, displaying many-valued logic.

Original languageEnglish
Pages (from-to)3039-3044
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume4
Issue number18
DOIs
Publication statusPublished - 2013 Sep 19

Keywords

  • macrocycles
  • molecular electronics
  • molecular memory
  • quantum transport

ASJC Scopus subject areas

  • Materials Science(all)

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