Issue 12, 2001

Mono-, di- and tetra-nuclear ruthenium(II) complexes containing 2,2′-p-phenylenebis(imidazo[4,5-f ]phenanthroline): synthesis, characterization and third-order non-linear optical properties

Abstract

Mono-, di- and tetra-nuclear ruthenium(II) complexes containing 2,2′-p-phenylenebis(imidazo[4,5-f ]phenanthroline) (H2bpib) have been synthesized and characterized. Electrochemical and UV/Vis data show that the first redox process in these complexes is bipyridine based and the metal–metal interaction in di- and tetra-nuclear complexes is very weak. Resonance Raman spectra provide direct evidence for a low-energy bipyridine to H2bpib charge-transfer transition. Furthermore, the non-linear optical properties of the ruthenium(II) complexes were investigated by Z-scan techniques with 12 ns laser pulses at 540 nm, and all of them exhibit both NLO absorption and self-defocusing effect. The corresponding effective NLO susceptibilities |χ3| of the complexes are 5.76 × 10−12–21.06 × 10−12 esu.

Graphical abstract: Mono-, di- and tetra-nuclear ruthenium(II) complexes containing 2,2′-p-phenylenebis(imidazo[4,5-f ]phenanthroline): synthesis, characterization and third-order non-linear optical properties

Article information

Article type
Paper
Submitted
15 Feb 2001
Accepted
12 Apr 2001
First published
21 May 2001

J. Chem. Soc., Dalton Trans., 2001, 1920-1926

Mono-, di- and tetra-nuclear ruthenium(II) complexes containing 2,2′-p-phenylenebis(imidazo[4,5-f ]phenanthroline): synthesis, characterization and third-order non-linear optical properties

H. Chao, R. Li, C. Jiang, H. Li, L. Ji and X. Li, J. Chem. Soc., Dalton Trans., 2001, 1920 DOI: 10.1039/B101483H

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