Dibenzophenazine Derivatives as Visible Photosensitizers for Diaryliodonium Salts

Date

2011-08-01

Author

Bulut, Umut
Kolay, Merve
Tarkuc, Simge
Toppare, Levent Kamil

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

121
views

0
downloads

The use of two dibenzo[a,c]phenazine derivatives, 10,13-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)dibenzo[a,c]phenazine and 10,13-bis(4-hexylthiophen-2-yl)dibenzo[a,c]phenazine are reported as photosensitizers for diaryliodonium salt photoinitiators. Novel dyes based on the dibenzo[a,c]phenazine skeleton are shown to be efficient in carrying out the cationic photopolymerizations. Representative examples of different types of monomers including epoxide, and vinyl monomers are polymerized in the presence of the photosensitizers and diphenyliodonium hexafluorophosphate (Ph2I+PF6-). Polymerizations are initiated at room temperature using long wavelength UV and visible light, and monitored by optical pyrometry. The photopolymerization of an epoxide monomer via solar irradiation is also demonstrated. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 32993303, 2011

Subject Keywords

Organic Chemistry, Materials Chemistry, Polymers and Plastics

URI

https://hdl.handle.net/11511/46154

Journal

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY

DOI

https://doi.org/10.1002/pola.24766

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Long wavelength photosensitizers in photoinitiated cationic polymerization: The effect of quinoxaline derivatives on photopolymerization Corakci, Bengisu; Hacioglu, Serife O.; Toppare, Levent Kamil; Bulut, Umut (Elsevier BV, 2013-06-07) This article describes the use of functionalized quinoxaline derivatives as photosensitizers for diaryliodonium salt photoinitiators. Highly conjugated compounds with good absorption bands in long wavelength UV and visible region are presented. These versatile intermediates facilitate photoinitiated cationic polymerization of commercially important monomers such as cyclic ethers and vinyl epoxides. Polymerizations were carried out using long wavelength UV light in the presence of diphenyliodonium hexafluoro...
ELECTROINITIATED POLYMERIZATION OF ACRYLAMIDE BY DIRECT ELECTRON-TRANSFER HACIOGLU, B; Akbulut, Ural; Toppare, Levent Kamil (Wiley, 1989-10-01) Electroinitiated polymerization of acrylamide was carried out in acetonitrile–tetrabutylammonium fluoroborate by electrolytic reduction of monomer. It was shown by cyclic voltammetry that direct electron transfer from the cathode to the monomer can be achieved in this solvent–electrolyte system. Reduction peak potentials measured by cyclic voltammetry indicated that sodium salts will interfere with such a mechanism. Since the reduction peak potential of sodium salt and dimethylformamide are found to be lowe...
Furoxan Derivatives of Pyrene - A DFT Study Türker, Burhan Lemi (Informa UK Limited, 2018-01-01) Furoxan-fused pyrenes and their dinitroso derivatives (obtained by furoxan ring opening) are considered for density functional treatment at the level of B3LYP/6-31G(d,p). Embedded benzofuroxan moiety in the furoxan-fused pyrene system is thought to undergo ring opening and reclosure process analogously to benzofuroxan itself. The stabilities, structural features, NICS(0) values, IR, and UV-VIS spectral aspects, etc., are investigated comparatively for these isomeric furoxan-fused pyrenes and their isomeric ...
Soluble Alkyl Substituted Poly(3,4-Propylenedioxyselenophene)s: A New Platform For Optoelectronic Materials Atak, Samed; Icli-Ozkut, Merve; Önal, Ahmet Muhtar; CİHANER, ATİLLA (Wiley, 2011-10-15) Optical and electrochemical properties of regiosymmetric and soluble alkylenedioxyselenophene-based electrochromic polymers, namely poly(3,3-dibutyl-3,4-dihydro-2H-seleno pheno [3,4-b][1,4]dioxephine) (PProDOS-C(4)), poly(3,3-dihexyl-3,4-dihydro-2H-selenopheno[3,4-b][1,4]dioxephine) (PProDOS-C(6)), and poly(3,3-didecyl-3,4-dihydro-2H-selenopheno[3,4-b][1,4]dioxephine) (PProDOS-C(10)), are highlighted. It is noted that these unique polymers have low bandgaps (1.57-1.65 eV), and they are exceptionally stable ...
ProTOT: Synthesis of the missing member of the 3,4-chalcogen substituted bridged thiophenes and its utilization in donor-acceptor polymers Yaylali, Figen V.; Ozel, Hande; UDUM, YASEMİN; Toppare, Levent Kamil; Soylemez, Saniye; GÜNBAŞ, EMRULLAH GÖRKEM (Elsevier BV, 2020-01-01) © 2020 Elsevier LtdSynthesis of sulfur containing derivatives of bridged dioxythiophene based polymers (PEDOT and PProDOT) and their applications in electrochromism have been pursued in recent years with promising results. Interestingly, synthesis of 3,4-dihydro-2H-thieno[3,4-b][1,4]oxathiepine (ProTOT) has not been pursued. Here, we describe the synthesis of this novel electron rich monomer and D-A-D type monomer that contain ProTOT as the donor and benzo[c][1,2,5]thiadiazole as the acceptor. ProTOT cannot...

Citation Formats

U. Bulut, M. Kolay, S. Tarkuc, and L. K. Toppare, “Dibenzophenazine Derivatives as Visible Photosensitizers for Diaryliodonium Salts,” JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, pp. 3299–3303, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46154.