TY - JOUR
T1 - Electrogenerated Chemiluminescence and Electronic States of Several Organometallic Eu(III) and Tb(III) Complexes
T2 - Effects of the Ligands
AU - Ishimatsu, Ryoichi
AU - Kunisawa, Eri
AU - Nakano, Koji
AU - Adachi, Chihaya
AU - Imato, Toshihiko
N1 - Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/3/7
Y1 - 2019/3/7
N2 - We report the electrochemical properties, and electrogenerated chemiluminescence (ECL) of eight different organometallic complexes of Eu(III) and Tb(III), Eu(dbm) 3 phen, Eu(dbm) 3 bath, Eu(fod) 3 phen, Eu(tta) 3 phen, Tb(acac) 3 phen, Tb(acac) 3 bath, Tb(fod) 3 phen, and Tb(tmhd) 3 bpy in acetonitrile, where phen, bath, and bpy are 1, 10-phenanthroline, bathophenanthroline, 2,2′-bipyridyl, respectively, and the anionic ligands, acac − , dbm − , fod − , and tta − are the enolate forms of acetylacetone, dibenzoylmethanate, 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione, and thenoyltrifluoroacetone, respectively. The electronic states of the neutral and some charged states of the complexes were clarified with density functional theory calculations. The ECL spectra were recorded by using S 2 O 8 2− as a coreactant, and for all complexes, sharp ECL spectra, which are attributable to the f-f transitions, were observed. On the potential-dependent ECL spectra, broad ECLs, which were originated from the ligands, were also detected. Based on the ECL behavior and the electronic states, the mechanisms of the intraconfigurational ECL were discussed.
AB - We report the electrochemical properties, and electrogenerated chemiluminescence (ECL) of eight different organometallic complexes of Eu(III) and Tb(III), Eu(dbm) 3 phen, Eu(dbm) 3 bath, Eu(fod) 3 phen, Eu(tta) 3 phen, Tb(acac) 3 phen, Tb(acac) 3 bath, Tb(fod) 3 phen, and Tb(tmhd) 3 bpy in acetonitrile, where phen, bath, and bpy are 1, 10-phenanthroline, bathophenanthroline, 2,2′-bipyridyl, respectively, and the anionic ligands, acac − , dbm − , fod − , and tta − are the enolate forms of acetylacetone, dibenzoylmethanate, 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione, and thenoyltrifluoroacetone, respectively. The electronic states of the neutral and some charged states of the complexes were clarified with density functional theory calculations. The ECL spectra were recorded by using S 2 O 8 2− as a coreactant, and for all complexes, sharp ECL spectra, which are attributable to the f-f transitions, were observed. On the potential-dependent ECL spectra, broad ECLs, which were originated from the ligands, were also detected. Based on the ECL behavior and the electronic states, the mechanisms of the intraconfigurational ECL were discussed.
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U2 - 10.1002/slct.201900595
DO - 10.1002/slct.201900595
M3 - Article
AN - SCOPUS:85062650494
VL - 4
SP - 2815
EP - 2831
JO - ChemistrySelect
JF - ChemistrySelect
SN - 2365-6549
IS - 9
ER -