Benzimidazole and benzotriazole derivatives, 4-(2,3-Dihydrothieno[3,4-b][1,4]
dioxin-5-yl)-7-(2,3-dihydrothieno[3,4b][1,4]dioxin-7-yl)-2-benzyl-1H-benzo[d]
imidazole (BIm-Ed), 2-benzyl-4,7-di(thiophen-2-yl)-2H-benzo[d] [1,2,3] triazole
(BBTS), and 2-benzyl-4,7-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2Hbenzo[
d] [1,2,3] triazole (BBTES) were employed as photosensitizers for
diaryliodonium salt photoinitiators in cationic photopolymerization of various
epoxide and vinyl ether monomers. Diphenyliodonium hexafluorophosphate
(Ph2I+PF6¯ / ) salt was used as the photoinitiator in this study. Extended conjugation
and electron-rich moieties of the photosensitizers enabled the use of long wavelength
UV and visible light emitting light sources in cationic photopolymerizations.
Polymerizations were achieved at room temperature and monitored by optical
pyrometry. Photopolymerization of a diepoxide monomer with ambient solar
irradiation was examined.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613457/index.pdf |
| Date | 01 July 2011 |
| Creators | Yilmaz, Seda |
| Contributors | Toppare, Levent |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for METU campus |
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