Photoacid Generation by Stepwise Two Photon Absorption Photoinitiated Cationic Polymerization of Cyclohexene Oxide by Using Benzodioxinone in the Presence of Iodonium Salt
Yazarlar (6)
Prof. Dr. Mehmet Atilla TAŞDELEN İstanbul Teknik Üniversitesi, Türkiye
Volkan Kumbaraci
İstanbul Teknik Üniversitesi, Türkiye
İstanbul Teknik Üniversitesi, Türkiye
Steffen Jockusch
Columbia University, Amerika Birleşik Devletleri
Columbia University, Amerika Birleşik Devletleri
Nicholas J. Turro
Columbia University, Amerika Birleşik Devletleri
Columbia University, Amerika Birleşik Devletleri
Naciye Talinli
İstanbul Teknik Üniversitesi, Türkiye
İstanbul Teknik Üniversitesi, Türkiye
Öğr. Gör. Yusuf Yagci İstanbul Teknik Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Macromolecules (Q1) | ||
| Dergi ISSN | 0024-9297 Dergi Bilgileri (2008) | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 01-2008 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 19-12-2007 |
| Cilt / Sayı / Sayfa | 41 / 2 / 295–297 | DOI | 10.1021/ma7023649 |
| Makale Linki | http://pubs.acs.org/doi/abs/10.1021/ma7023649 | ||
| UAK Araştırma Alanları |
Polimer Bilimi
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| Özet |
| Photoinitiated cationic polymerization1-4 is of great practical interest due to their applicability for the curing of coatings and printing inks and for resist technology. The major classes of photoinitiators which can successfully initiate cationic polymerization include diaryliodonium, 5 triarylsulfonium, 6 and alkoxypyridinium7, 8 salts. Besides their direct activation (direct light absorption), several indirect sensitization methods are reported to extend photopolymerization sensitivity to longer wavelengths. This way practical application of the photoinitiated cationic polymerization can become acceptable since medium-and highpressure mercury lamps that are frequently used as light sources provide emissions at 313 and 366 nm. Successfully employed indirect ways include oxidation of photochemically generated free radicals, 9 electron-transfer reactions in the exciplexes, 10-12 and charge-transfer complexes. 13, 14 Among these methods, freeradical-promoted cationic polymerization finds wider application because of availability of a wide range of free radical photoinitiators absorbing at different wavelengths. In addition to the cleavage type photoinitiators, hydrogen abstraction type photoinitiators15, 16 were shown to generate oxidizable electron donor radicals.It was recently reported17 that functionalized salicylate esters can be readily prepared by a photochemical acylation process by using benzodioxinones in the presence of alcohols and phenols (Scheme 1). We have recently shown18 that this process can also be used for the preparation of oligoesters when benzodioxinones are equipped with aliphatic hydroxyl groups. Upon irradiation of … |
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BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 77 |
| Scopus | 82 |
| Google Scholar | 94 |