Electrical and optical effects in molecular nanoscopic-sized building blocks

W. P. Kirk, K. L. Wouters, N. A. Basit, F. M. MacDonnell, M. Tao, K. P. Clark

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

A biomimetic strategy is used to bridge the gap from the molecular scale to the microscale. Dendritic, conformationally rigid ruthenium(II)polypyridyl complexes have been synthesized to form a set of nanometer-sized building blocks (NBBs) (1.6-5.0 nm) with discrete 'tertiary' structures. We postulate that thin films constructed from NBBs with differing tertiary structures will form ordered arrays with differing 'quaternary' structures and, presumably, differing electronic properties. Experimental studies show that thin films of these molecules are conductive, display electric field-modulated conductivity, and enhanced conductivity upon visible irradiation. Significantly, changes in the molecule's overall shape (tertiary structure) have a measurable effect on the electrical properties of the films prepared from them. Importantly, these NBBs are chemically robust and structurally tunable. We intend to exploit these properties as well as their newly discovered electronic, optical, and, potentially even, chiro-optical properties so as to provide a new, added dimension in molecular electronics and chiral optical devices.

Original languageEnglish (US)
Pages (from-to)126-132
Number of pages7
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume19
Issue number1-2
DOIs
StatePublished - Jul 1 2003
Externally publishedYes
EventFourth International Symposium on Nanostructures and Mesoscopi - Tempe, AZ, United States
Duration: Feb 17 2003Feb 21 2003

Keywords

  • Biomimetic
  • Chiral optics
  • Molecular electronics
  • Nanoscopic building blocks
  • Ruthenium polypyridyl

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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