In Situ STM/STS Investigation of Light Induced Naphthacenequinone Molecules Conformation Transformations

Abstract

Light induced conformational transformations of the of naphthacenequinone (NQ) molecules ordered in LB films are observed by means of scanning tunneling microscopy (STM). The distinct peak in local density of electronic states is detected which is characteric for the 2-dimensional character of conductivity. Additional subband of electronic states has been found for NQ molecules in form A and not found in form B. The constant height STM images of individual molecules in the lorm A demonstrate an additional fine structure that indicates the conformational transition of molecules from A to B form. This transition is connected with the transfer of the phenoxy group from one oxygen to another and probably leads to shutdown some of tunneling channels.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1998
Accession Number
ADP012743

Entities

People

  • A. I. Oreshkin
  • N. I. Koroteev
  • S. I. Vasil'ev
  • V. I. Panov

Organizations

  • Moscow State University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Conductivity
  • Data Storage Systems
  • Electronic States
  • Films
  • High Density
  • Light Sources
  • Memory Devices
  • Microscopy
  • Molecular Structure
  • Molecules
  • Photochemical Reactions
  • Quantum Tunneling
  • Scanning
  • Technical Information Centers
  • Transitions
  • Tunneling
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Electrochemical Surface Science
  • Quantum Chemistry
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene