Quinoxaline derivatives as long wavelength photosensitizers in photoinitiated cationic polymerization of diaryliodonium salts |
| |
| Authors: | Umut Bulut Merve Kolay Simge Tarkuc Yasemin Arslan Udum Levent Toppare |
| |
| Affiliation: | 1. Middle East Technical University Northern Cyprus Campus, Guzelyurt, Mersin 10, Turkey;2. Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey;3. Opto-Electronic Materials, DelftChemTech, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands;4. Institute of Science and Technology, Department of Advanced Technologies, Gazi University, 06570 Ankara, Turkey;5. Department of Biotechnology, Middle East Technical University, 06531 Ankara, Turkey;6. Department of Polymer Science and Technology, Middle East Technical University, 06531 Ankara, Turkey |
| |
| Abstract: | The present paper is focused on visible light initiated cationic polymerizations. Photoinitiated polymerization of representative vinyl ether and oxirane monomers using two quinoxaline derivatives; namely (2-(2,3-dihydrobenzo [b][1,4]dioxin-6-yl)-3-(2,3-dihydrobenzo[b]-[1,4]dioxin-7-yl)-5-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-8-(2,3-dihydrothieno[3,4-b][1,4]dioxin-7yl) quinoxaline) (DBQEd) and 2,3,5,8-tetra(thiophen-2-yl)quinoxaline (TTQ) are studied. Novel dyes based on the quinoxaline skeleton are employed as efficient photosensitizers in cationic photopolymerizations. Polymerizations were initiated at room temperature upon irradiation with long-wavelength UV and visible lights in the presence of diphenyliodonium hexafluorophosphate (Ph2I+PF6?). The progress of the polymerizations was monitored by optical pyrometry (OP). Solar irradiation is also employed to carry out the cationic polymerization of a diepoxide monomer in the presence of air. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
