Universitat de Barcelona
2020-05-07T09:06:30Z
2020-05-07T09:06:30Z
2020-02-20
2020-05-07T09:06:30Z
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.
Article
Published version
English
Or; Compostos d'or; Luminescència; Gold; Gold compounds; Luminescence
MDPI
Reproducció del document publicat a: https://doi.org/10.3390/molecules25040949
Molecules, 2020, vol. 25, num. 4, p. 949
https://doi.org/10.3390/molecules25040949
cc-by (c) Caparrós, Francisco J. et al., 2020
http://creativecommons.org/licenses/by/3.0/es
