Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 170, Issue 2, Pages 123-129Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2004.08.010
Keywords
photopolymerization; cyanine dye; near IR; photoinduced electron transfer
Categories
Ask authors/readers for more resources
The sensitizing abilities of near infrared (near IR)-absorbing ionic (D1) and non-ionic (D2 and D3) cyanine dyes in a photoinduced radical polymerization system were evaluated. The solubility in an organic solvent of non-ionic cyanine dyes is much higher than that of an ionic cyanine dye. The photoinduced radical polymerization system consists of a sensitizing dye (D1-D3), 2,4,6-tris(trichloromethyl)-s-triazine (TCT, as a radical genetrator), and a poly-functional acrylate monomer (DPHA) in the binder polymer. All dyes showed a sensitizing ability in the photoinduced radical polymerization systems by near IR light. Non-ionic cyanine dyes, D2 and D3, showed a higher sensitizing ability than D1. From the IR and UV-vis studies, it was revealed that the high sensitizing ability of D2 and D3 is a result of an interaction between the dye and TCT in the polymer matrices, promoting the electron-transfer from the dyes to the TCT. (C) 2004 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available