Emission Color Tuning in AlQ3 Complexes with Extended Conjugated Chromophores

Radek Pohl and Pavel Anzenbacher, Jr.*
Center for Photochemical Sciences and Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403
Org. Lett., 2003, 5 (16), pp 2769–2772
DOI: 10.1021/ol034693a
Publication Date (Web): July 16, 2003
Copyright © 2003 American Chemical Society
*

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

, pavel@bgnet.bgsu.edu

Abstract

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A new method for the synthesis of 5-arylethynyl-8-hydroxyquinoline ligands using Sonogashira−Hagihara coupling was developed. The electronic nature of arylethynyl substituents affects the emission color and quantum yield of the resulting Al(III) complex. Photophysical properties of the metallocomplexes correspond to the electron-withdrawing/-donating character of the arylethynyl substituents. Optical properties of such Al(III) complexes correlate with the Hammett constant values of the respective substituents. This strategy offers a powerful tool for the preparation of electroluminophores with predictable photophysical properties.

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History

  • Published In Issue August 07, 2003
  • Received April 25, 2003

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