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Tetraacylgermanes: Highly Efficient Photoinitiators for Visible-Light-Induced Free-Radical Polymerization.
Radebner, Judith; Eibel, Anna; Leypold, Mario; Gorsche, Christian; Schuh, Lukas; Fischer, Roland; Torvisco, Ana; Neshchadin, Dmytro; Geier, Roman; Moszner, Norbert; Liska, Robert; Gescheidt, Georg; Haas, Michael; Stueger, Harald.
Afiliação
  • Radebner J; Institute of Inorganic Chemistry, Technische Universität Graz, Stremayrgasse 9/IV, 8010, Graz, Austria.
  • Eibel A; Institute of Physical and Theoretical Chemistry, Technische Universität Graz, Austria.
  • Leypold M; Institute of Inorganic Chemistry, Technische Universität Graz, Stremayrgasse 9/IV, 8010, Graz, Austria.
  • Gorsche C; Institute of Applied Synthetic Chemistry and Christian Doppler Laboratory for Photopolymers in Digital and Restorative Dentistry, Technische Universität Wien, Austria.
  • Schuh L; Institute of Inorganic Chemistry, Technische Universität Graz, Stremayrgasse 9/IV, 8010, Graz, Austria.
  • Fischer R; Institute of Inorganic Chemistry, Technische Universität Graz, Stremayrgasse 9/IV, 8010, Graz, Austria.
  • Torvisco A; Institute of Inorganic Chemistry, Technische Universität Graz, Stremayrgasse 9/IV, 8010, Graz, Austria.
  • Neshchadin D; Institute of Physical and Theoretical Chemistry, Technische Universität Graz, Austria.
  • Geier R; Institute of Physical and Theoretical Chemistry, Technische Universität Graz, Austria.
  • Moszner N; Ivoclar Vivadent AG, Schaan, Liechtenstein.
  • Liska R; Institute of Applied Synthetic Chemistry and Christian Doppler Laboratory for Photopolymers in Digital and Restorative Dentistry, Technische Universität Wien, Austria.
  • Gescheidt G; Institute of Physical and Theoretical Chemistry, Technische Universität Graz, Austria.
  • Haas M; Institute of Inorganic Chemistry, Technische Universität Graz, Stremayrgasse 9/IV, 8010, Graz, Austria.
  • Stueger H; Institute of Inorganic Chemistry, Technische Universität Graz, Stremayrgasse 9/IV, 8010, Graz, Austria.
Angew Chem Int Ed Engl ; 56(11): 3103-3107, 2017 03 06.
Article em En | MEDLINE | ID: mdl-28156043
ABSTRACT
In this contribution a convenient synthetic method to obtain tetraacylgermanes Ge[C(O)R]4 (R=mesityl (1 a), phenyl (1 b)), a previously unknown class of highly efficient Ge-based photoinitiators, is described. Tetraacylgermanes are easily accessible via a one-pot synthetic protocol in >85 % yield, as confirmed by NMR spectroscopy, mass spectrometry, and X-ray crystallography. The efficiency of 1 a,b as photoinitiators is demonstrated in photobleaching (UV/Vis), time-resolved EPR (CIDEP), and NMR/CIDNP investigations as well as by photo-DSC studies. Remarkably, the tetraacylgermanes exceed the performance of currently known long-wavelength visible-light photoinitiators for free-radical polymerization.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Áustria
Texto completo
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XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Áustria