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Transition Metal Chemistry

, Volume 40, Issue 6, pp 673–679 | Cite as

Synthesis and photophysical characterization of ruthenium(II) and platinum(II) complexes with bis-pyridylethynyl-phenanthroline ligands as a metalloligand

  • Michito ShiotsukaEmail author
  • Yusuke Ueno
  • Daiki Asano
  • Tomoya Matsuoka
  • Katsuya Sako
Article

Abstract

Novel ruthenium complexes Ru(L)(bpy)2(PF6)2 and platinum organometallic complexes Pt(L)(−≡−C6H5CH3)2 with bis-(pyridinyl)ethynyl-phenanthrolines (L = 3,8-bis[2-(3-pyridinyl)ethynyl]-1,10-phenanthroline or 3,8-bis[2-(4-pyridinyl)ethynyl]-1,10-phenanthroline) that function as metalloligands by extra pyridyl units have been prepared using respective synthetic methods. These complexes have broad absorption bands assignable to the MLCT band as the main contributing factor in the 400 to 550 nm wavelength region. Furthermore, these complexes show phosphorescence centered around 680 nm upon excitation at 425 nm. These emissions were assigned to a triplet MLCT-based luminescence for the ruthenium complexes, while a triplet MLCT as the main element, including the interligand charge transfer as the minor element, was assigned for the platinum organometallic complexes. The quantum yields of the emission of the present ruthenium complexes were relatively high, and these complexes are exactly phosphorescent dyes, although the emission intensities of the platinum complexes are poor. These two types of complexes are capable of selective photophysical detection of some metal ions and can serve as metalloligands in the construction of supramolecular metallocycles.

Keywords

Ruthenium Phenanthroline Ruthenium Complex Platinum Complex Ethynyl 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported in part by JSPS KAKENHI Grant Number 26410070 from Japan Society for the Promotion of Science, Japan.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Michito Shiotsuka
    • 1
    Email author
  • Yusuke Ueno
    • 1
  • Daiki Asano
    • 1
  • Tomoya Matsuoka
    • 1
  • Katsuya Sako
    • 1
  1. 1.Graduate School of EngineeringNagoya Institute of TechnologyNagoyaJapan

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