Synthesis, characterization, and photophysical properties of some heterodimetallic bisporphyrins of ytterbium and transition metals - Enhancement and lifetime extension of Yb3+ emission by transition-metal porphyrin sensitization

Feng Lei Jiang, Rick W K WONG*, Xunjin ZHU, Gui Jiang Zhou, Wai Yeung WONG, Po Lam Wu, Hoi Lam TAM, Kok Wai CHEAH, Cheng Ye, Yi Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

A series of d-f heterodimetallic bisporphyrin complexes (YbZn, YbPd, and YbPt), in which a YbIII porphyrinate moiety is linked to a transition-metal porphyrinate moiety by a flexible three-carbon chain, were synthesized. They were fully characterized by high-resolution mass spectrometry, 1H and 31P NMR spectroscopy, electronic absorption, and fluorescence methods. Variable-temperature near-infrared photoluminescence studies showed that the transition-metal porphyrinate moiety would enhance the ytterbium(III) emission centered at about 998 nm and extend its emission lifetime. YbPd and YbPt showed large two-photon absorption cross-section values because of the interaction between the porphyrin units, which caused a loss of centrosymmetry. Optical limiting investigation demonstrated that [Yb(TPP)(L OMe)] and YbPt have comparable performance to C60 by virtue of their heavy-metal effect. Our results indicate that these bisporphyrin dimetallic complexes will find valuable applications in the field of nonlinear optics.

Original languageEnglish
Pages (from-to)3365-3374
Number of pages10
JournalEuropean Journal of Inorganic Chemistry
Issue number21
DOIs
Publication statusPublished - 2007

Scopus Subject Areas

  • Inorganic Chemistry

User-Defined Keywords

  • Lanthanides
  • Optical limiting
  • Photoluminescence
  • Porphyrins
  • Transition metals

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