Synthesis, Characterization, and Micellization Studies of Coil-Rod-Coil and ABA Ruthenium(II) Terpyridine Assemblies with pi-Conjugated Electron Acceptor Systems

Schluetter, Florian;Pavlov, Georges M.;Gohy, Jean-François;Winter, Andreas;Schubert, Ulrich S.;et.al.
(2011) Journal of polymer science part a-polymer chemistry — Vol. 49, n° 6, p. 1396-1408 (2011)

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Authors
  • Schluetter, Florian
    Author
  • Pavlov, Georges M.
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  • Gohy, Jean-FrançoisUCLouvain
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  • Winter, Andreas
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  • Schubert, Ulrich S.
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Abstract
A series of Ru(II) heterodinuclear complexes of ABA-type with electron-deficient bis-terpyridines as building blocks was synthesized by (R-tpy)Ru(III)CI(3) complexation. These compounds were characterized by NMR spectroscopy, MALDI-TOF, ESI-TOF mass spectrometry, and elemental analysis. The results were compared with a coil-rod-coil Ru(II) metallo-supra-molecular copolymer, which was synthesized by bis-complex formation between a hydrophilic omega-terpyridine poly(ethylene glycol) Ru(II) mono-complex and a hydrophobic bis-terpyridine-functionalized rigid core. This amphiphilic Ru(II) triblock copolymer showed self-assembly to clusters and micelles in aqueous solution, which was studied by transmission electron microscopy and dynamic light scattering. Applying velocity sedimentation experiments the number of amphiphilic Ru(II) ABA triblock copolymer molecules within the micelles could be estimated. Finally, the photophysical properties of the Ru(II) supramolecular assemblies were investigated by UV-vis spectroscopy. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 1396-1408, 2011
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Schluetter, F., Pavlov, G. M., Gohy, J.-F., Winter, A., Wild, A., Hager, M. D., Hoeppener, S., & Schubert, U. S. (2011). Synthesis, Characterization, and Micellization Studies of Coil-Rod-Coil and ABA Ruthenium(II) Terpyridine Assemblies with pi-Conjugated Electron Acceptor Systems. Journal of polymer science part a-polymer chemistry, 49(6), 1396-1408. https://doi.org/10.1002/pola.24560 (Original work published 2011)