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Title: Luminescent tetranuclear gold(I) dibenzo[g,p]chrysene derivatives: effect of the environment on photophysical properties
Author: Caparrós, Francisco J.
Outis, Mani
Jung, Yongsik
Choi, Hyeonho
Lima, João Carlos
Rodríguez Raurell, Laura
Keywords: Or
Compostos d'or
Gold compounds
Issue Date: 20-Feb-2020
Publisher: MDPI
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 e ect 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 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.
Note: Reproducció del document publicat a:
It is part of: Molecules, 2020, vol. 25, num. 4, p. 949
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ISSN: 1420-3049
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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