Azulenic Chromophores and Polymers for Optical Limiting and Other Nonlinear Optical Applications

Abstract

A series of new symmetrical 1,3-disubstituted azulene derivatives were prepared for examination of their two-photon absorption and optical limiting properties. Several structurally modified azulenic polymethine dyes, previously identified as reverse saturable absorbers and optical limiters, were also. prepared. Synthetic protocols were devised to covalently attach a number of azulenic NLO chromophores to polymer hosts. A completely unexpected nonequivalence was observed for one of the NMR signals for symmetrical polymethine dye 13c at low-temperature. The measurement of electronic properties (dipole moments polarizabilities, and hyperpolarizabilities) of a series of fluorinated azulenic azobenzenes is being undertaken using electroabsorption (Stark) spectroscopy.

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Document Details

Document Type
Technical Report
Publication Date
Jan 28, 2000
Accession Number
ADA379040

Entities

People

  • Alfred E. Esato
  • Dana Watanable
  • Robert S. Liu
  • Xue-song Wang

Organizations

  • University of HawaiĘ»i System

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Absorption
  • Alkenes
  • Aromatic Hydrocarbons
  • Azobenzenes
  • Band Gaps
  • Chemical Synthesis
  • Chemistry
  • Chromophores
  • Dipole Moments
  • Dyes
  • Electron Transfer
  • Energy Levels
  • Low Temperature
  • Optical Limiters
  • Organic Chemistry
  • Spectroscopy
  • Two Photon Absorption

Fields of Study

  • Chemistry

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Optical Physics and Photonics.
  • Organic Chemistry

Technology Areas

  • Microelectronics