2026-04-17T03:45:52Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1590412025-12-04T21:45:06Zcom_2072_1057col_2072_478917col_2072_478933

00925njm 22002777a 4500 dc Caparrós Rodríguez, Francisco Javier author Outis, Mani author Jung, Yongsik author Choi, Hyeonho author Lima, João Carlos author Rodríguez Raurell, Laura author 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. Or Compostos d'or Luminescència Gold Gold compounds Luminescence Luminescent tetranuclear gold(I) dibenzo[g,p]chrysene derivatives: effect of the environment on photophysical properties