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Decatungstate (W 10 O 32 4− )/Silane: A New and Promising Radical Source Under Soft Light Irradiation
Author(s) -
Lalevée Jacques,
Blanchard Nicolas,
Tehfe MohamadAli,
Fouassier Jean Pierre
Publication year - 2011
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100099
Subject(s) - silane , silanes , radical , irradiation , photochemistry , silylation , photopolymer , flash photolysis , fluorescence , chemistry , materials science , optics , physics , catalysis , organic chemistry , polymer , kinetics , nuclear physics , quantum mechanics , reaction rate constant , polymerization
The use of decatungstate ${\left( {{\rm W}_{{\rm 10}} {\rm O}_{{\rm 32}}^{{\rm 4}{-} } } \right)}$ in combination with silanes to generate silyl radicals under green fluorescence bulb irradiation as well as sunlight exposure is described. The mechanisms are investigated by ESR and laser flash photolysis experiments. The high potential of this reaction is evidenced here when using a decatungstate/silane/diphenyl iodonium salt combination as an initiating system for the ring opening photopolymerization of epoxides.
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