4f-Luminescence of ytterbium ions in the complexes with asymmetric porphyrins
New complexes of ytterbium with asymmetric porphyrins containing substituents in β-positions were obtained and characterized by elemental analysis, IR, UV–vis absorption and luminescence spectroscopy. Electronic absorption, luminescence and luminescence excitation spectra of these complexes were stu...
Gespeichert in:
Veröffentlicht in: | Journal of alloys and compounds 2008-02, Vol.451 (1), p.334-337 |
---|---|
Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | New complexes of ytterbium with asymmetric porphyrins containing substituents in β-positions were obtained and characterized by elemental analysis, IR, UV–vis absorption and luminescence spectroscopy. Electronic absorption, luminescence and luminescence excitation spectra of these complexes were studied at 295
K in DMF solutions. The 4f-luminescence of ytterbium–porphyrins in the near infrared (IR) spectral region (
λ
max
=
980
nm) is observed under excitation in Soret band (400–430
nm). The effect of substituent in porphyrin macroring on the 4f-luminescent properties was also investigated. |
---|---|
ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2007.04.138 |