Luminescent tetranuclear gold(I) dibenzo[g,p]chrysene derivatives: Effect of the environment on photophysical properties

Francisco J. Caparrós, Mani Outis, Yongsik Jung, Hyeonho Choi, João Carlos Lima, Laura Rodríguez

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A new 2,7,10,15-tetraethynyldibenzo[g,p]chrysene ligand (1) and two tetranuclear gold(I) derivatives containing PPh3 (3) and PMe3 (4) phosphines were synthesized and characterized by 1H and 31P NMR, IR spectroscopy, and high-resolution mass spectrometry. The compounds were studied in order to analyze the effect of the introduction of gold(I) on the supramolecular aggregation and photophysical properties. Absorption and emission spectra displayed broad bands due to the establishment of π π interactions as an indication of intermolecular contacts and the formation of aggregates. A decrease of the recorded quantum yield (QY) of the gold(I) derivatives was observed compared to the uncomplexed ligand. The introduction of the complexes into poly methyl methacrylate (PMMA) and Zeonex 480R matrixes was analyzed, and an increase of the measured QY of 4 in Zeonex was observed. No phosphorescent emission was detected.

Original languageEnglish
Article number949
JournalMolecules
Volume25
Issue number4
DOIs
Publication statusPublished - 20 Feb 2020

Keywords

  • Dibenzo[g,p]chrysene
  • Gold
  • Heavy atom effect
  • Luminescence matrixes

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