Quinoxaline derivatives as long wavelength photosensitizers in photoinitiated cationic polymerization of diaryliodonium salts

Date

2012-02-01

Author

Bulut, Umut
Kolay, Merve
Tarkuc, Simge
Udum, Yasemin Arslan
Toppare, Levent Kamil

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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 (Ph(2)1(+)PF(6)(-)). 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.

Subject Keywords

Cationic polymerization, Diaryliodonium salts, Photopolymerization, Photosensitization, Photosensitizers, Quinoxaline derivatives

URI

https://hdl.handle.net/11511/39939

Journal

PROGRESS IN ORGANIC COATINGS

DOI

https://doi.org/10.1016/j.porgcoat.2011.11.004

Collections

Department of Chemistry, Article

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Citation Formats

U. Bulut, M. Kolay, S. Tarkuc, Y. A. Udum, and L. K. Toppare, “Quinoxaline derivatives as long wavelength photosensitizers in photoinitiated cationic polymerization of diaryliodonium salts,” PROGRESS IN ORGANIC COATINGS, pp. 215–218, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39939.