Journal article
Crystal structures and intense luminescence of tris(3-(2'-pyridyl)-pyrazolyl)borate Tb 3+ and Eu 3+ complexes with carboxylate co-ligands
Dalton transactions : an international journal of inorganic chemistry, v 46(11), pp 3457-3469
14 Mar 2017
PMID: 28139794
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Abstract
A series of brightly luminescent new mononuclear Tp
Ln(An)
(H
O) (where An
= carboxylate anion, Ln = Eu or Tb and Tp
= tris(3-(2'-pyridyl)pyrazolyl)borate) and dinuclear (Tp
Ln)
pma(MeOH)
(Ln = Eu, Tb, pma
= tetraanion of pyromellitic acid) complexes were prepared and characterized by X-ray crystallography. Within each series the compounds possess similar molecular structures, which differ only by the nature of the carboxylate anions. The quantum efficiencies for metal-centered emission of the complexes were up to 29(3)% for Eu
and 53(5)% for the Tb
compounds and significantly depend on the electronic structure of the additional ligand (i.e. the carboxylate). The aliphatic carboxylate compounds' luminescence quantum yields were all similar, but different from those for the aromatic ones. The complexes with trifluoroacetate and pentafluorobenzoate unexpectedly displayed lower quantum efficiencies compared to those with the corresponding non-fluorinated analogues. Energy transfer from Tb
to Eu
occurs in a mixture of (Tp
Eu)(pma)(TbTp
)(MeOH)
, (Tp
Eu)
(pma)(MeOH)
and (Tp
Tb)
(pma)(MeOH)
but is not very efficient. The Tb
-compounds displayed green electroluminescence, and both the Eu
and Tb
complexes exhibited bright metal-centered red (Eu
) or green (Tb
) triboluminescence.
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Details
- Title
- Crystal structures and intense luminescence of tris(3-(2'-pyridyl)-pyrazolyl)borate Tb 3+ and Eu 3+ complexes with carboxylate co-ligands
- Creators
- Elena A Mikhalyova - L.V. Pisarzhevskii Institute of Physical ChemistryAnastasiya V Yakovenko - L.V. Pisarzhevskii Institute of Physical ChemistryMatthias Zeller - Youngstown State UniversityKonstantin S Gavrilenko - Taras Shevchenko National University of KyivMikhail A Kiskin - N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prosp. 31, 119991 Moscow, GSP-1, Russian FederationSergey S Smola - ODESSAVladimir P Dotsenko - ODESSAIgor L Eremenko - N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prosp. 31, 119991 Moscow, GSP-1, Russian FederationAnthony W Addison - Drexel UniversityVitaly V Pavlishchuk - L.V. Pisarzhevskii Institute of Physical Chemistry
- Publication Details
- Dalton transactions : an international journal of inorganic chemistry, v 46(11), pp 3457-3469
- Publisher
- Royal Society of Chemistry
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000397819000008
- Scopus ID
- 2-s2.0-85015662744
- Other Identifier
- 991019168970204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Inorganic & Nuclear