The origin of luminescence blueshifts in Alq3 composites

G. Baldacchini, P. Chiacchiaretta, R. Reisfeld, E. Zigansky

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19 Citations (Scopus)


Recently, tris(8-hydroxyquinoline)aluminum (Alq3) has been diluted into various sol-gel matrices, and a strong blueshift with respect to the well-known emission band of amorphous thin films has been observed. This result has been explained by the absence of interactions among molecules that are isolated in the microscopic pores of glasses. The same explanation is also working in analogous measurements performed lately in various matrices, where the blueshift was wrongly attributed to a mixing of facial and meridianal isomers. Indeed, it is shown here that the Alq3meridianal isomer alone can explain the experimental results. © 2009 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1849 - 1852
Number of pages4
JournalJournal of Luminescence
Issue number12
Publication statusPublished - Dec 2009
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Chemistry(all)
  • Biochemistry
  • Biophysics

Cite this

Baldacchini, G., Chiacchiaretta, P., Reisfeld, R., & Zigansky, E. (2009). The origin of luminescence blueshifts in Alq3 composites. Journal of Luminescence, 129(12), 1849 - 1852.