Halka Açılımı Metatez Polimerizasyonu Ve Diels-alder Ve Nitroksit Radikal Birleşme Reaksiyonları İle Aşı Blok Kopolimerleri Eldesi
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Yayınevi
Fen Bilimleri Enstitüsü
Institute of Science and Technology
Institute of Science and Technology
Özet
Bu çalışmanın birinci basamağında önce ω-antrasen uç-fonksiyonlandırılmış okzanorbornenil PS makromonomeri, ω-anthracene-PS-N3 ve oksanorbornil alkinin Cu(I) katalizinde azid-alkin siklik katılması reaksiyonu ile oda sıcaklığında hazırlandı. Sırasıyla ω-antrasen uç-fonksiyonlandırılmış okzanorbornenil PS makromonomeri oda sıcaklığında diklorometan içerisinde birinci jenerasyon Grubbs katalizörü kullanılarak halka açılma metatez polimerizasyonu ile sentezlendi. Sonra 110 oC’ de toluende Diels-Alder reaksiyonu ile maleimid uç-fonksiyonlu polimer PtBA-MI ile poly(oxanorbornen)-g-(PS-b-PtBA) aşı blok kopolimeri sentezlendi. Son olarak bu aşı blok kopolimeri nitrokisit radikal birleşmesi yöntemiyle TEMPO uç fonksiyonlu polimerler PEG ve PCL ile poly(oxanorbornen)-g-(PS-b-PtBA-b-PEG) ve poly(oxanorbornen)-g-(PS-b-PtBA-b-PCL) aşı blok kopolimerleri sentezlendi.
In this study;oxanorbornenyl PS with ω-anthracene end-functionalized macromonomer was prepared via copper(I) catalyzed azide-alkyne cycloaddition (CuACC) reaction of anthracene-PS-N3 (heterotelechelic PS) with oxanorbornenyl alkyne. Subsequently, oxanorbornenyl PS with ω-anthracene end-functionalized macromonomer was polymerized via ROMP using the first generation Grubbs’ catalyst in dichloromethane at room temperature and then clicked with maleimide end-functionalized polymer PtBA-MI in a Diels-Alder reaction in toluene at 110 oC to create corresponding graft block copolymer poly(oxanorbornene)-g-(PS-b-PtBA). Next, the third block was introduced onto the graft block copolymer using nitroxyl radical end-functionalized PEG (TEMPO-PEG) and nitroxyl radical end-functionalized PCL (TEMPO-PCL) by nitroxide radical coupling (NRC) technique to give poly(oxanorbornene)-g-(PS-b-PtBA-b-PEG) and poly(oxanorbornene)-g-(PS-b-PtBA-b-PCL.
In this study;oxanorbornenyl PS with ω-anthracene end-functionalized macromonomer was prepared via copper(I) catalyzed azide-alkyne cycloaddition (CuACC) reaction of anthracene-PS-N3 (heterotelechelic PS) with oxanorbornenyl alkyne. Subsequently, oxanorbornenyl PS with ω-anthracene end-functionalized macromonomer was polymerized via ROMP using the first generation Grubbs’ catalyst in dichloromethane at room temperature and then clicked with maleimide end-functionalized polymer PtBA-MI in a Diels-Alder reaction in toluene at 110 oC to create corresponding graft block copolymer poly(oxanorbornene)-g-(PS-b-PtBA). Next, the third block was introduced onto the graft block copolymer using nitroxyl radical end-functionalized PEG (TEMPO-PEG) and nitroxyl radical end-functionalized PCL (TEMPO-PCL) by nitroxide radical coupling (NRC) technique to give poly(oxanorbornene)-g-(PS-b-PtBA-b-PEG) and poly(oxanorbornene)-g-(PS-b-PtBA-b-PCL.
Açıklama
Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2012
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2012
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2012
Konusu
polimer sentezi, Diels-Alder click reaksiyonu, aşı blok kopolimerleri, halka açılımı metatez polimerizasyonu, nitroksit radikal birleşme reaksiyonları, Polymer synthesis, Diels-Alder click reaction, graft block copolymers, ring opening metathesis polymerization, nitroxide radical coupling reactions
