Synthesis of Miktoarm Star Shaped Polymers with POSS Core via a Combination of CuAAC Click Chemistry ATRP and ROP Techniques
Yazarlar (3)
Erdinç Doğancı Kocaeli Üniversitesi, Türkiye
Prof. Dr. Mehmet Atilla TAŞDELEN Yalova Üniversitesi, Türkiye
Faruk Yılmaz Gebze Teknik Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Macromolecular Chemistry and Physics
Dergi ISSN 1022-1352 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SSCI
Makale Dili İngilizce Basım Tarihi 09-2015
Kabul Tarihi Yayınlanma Tarihi 06-08-2015
Cilt / Sayı / Sayfa 216 / 17 / 1823–1830 DOI 10.1002/macp.201500199
Makale Linki http://doi.wiley.com/10.1002/macp.201500199
Özet
Well-defined AB-type miktoarm star-shaped polymers with a polyhedral oligomeric silsesquioxane (POSS) core are prepared by combination of the core-first and arm-first approaches using ring-opening polymerization (ROP) and copper-catalyzed azide-alkyne cycloaddition (CuAAC) click reactions. The clickable octakis-azido-hydroxyl-POSS as the core molecule and alkyne end-functionalized precursor polymers (methoxypoly(ethylene glycol), poly(methyl methacrylate) (PMMA), and polystyrene) are synthesized independently according to the well-known procedures including ring-opening reaction of octaglycidyldimethylsilyl POSS using sodium azide, etherification of poly(ethylene glycol) (PEG) monomethyl ether using propargyl bromide and sequential atom transfer radical polymerization of methyl methacrylate or styrene and following nucleophilic substitution reactions of the these polymers with sodium azide. In subsequent step, octa-armed poly(epsilon-caprolactone) star-shaped polymer ((PCL)(8)-POSS-(N-3)(8)) containing azido functionalities in the core is synthesized via core-first approach through ROP of epsilon-caprolactone (epsilon-CL). Finally, alkyne end-functionalized polymers are introduced to the (PCL)(8)-POSS-(N-3)(8) via arm-first approach using the CuAAC click reaction under ambient conditions, yielding AB-type miktoarm star-shaped polymers. Based on H-1 NMR spectroscopy calculations, the number of PEG, PMMA, and PSt arms in (PCL)(8)-POSS-(mPEG)(7), (PCL)(8)-POSS-(PMMA)(5), and (PCL)(8)-POSS-(PSt)(6) star-shaped polymers is found as 7.1, 4.9, and 5.9, respectively.
Anahtar Kelimeler
arm-first | copper(I)-catalyzed 1 | 3-dipolar cycloaddition click chemistry | core-first | miktoarm star-shaped polymers | polyhedral oligomeric silsesquioxanes | ring-opening polymerization