Synthesis and characterization of mid- and end-chain functional telechelics by controlled polymerization methods and coupling processes

Demet Colak, Ioan Cianga, Ali Ekrem Muftuoglu, Yusuf Yagci*

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

23 Atıf (Scopus)

Özet

Well-defined polystyrene- (PSt) or poly(e-caprolactone) (PCL)-based polymers containing mid- or end-chain 2,5 or 3,5- dibromobenzene moieties were prepared by controlled polymerization methods, such as atom transfer radical polymerization (ATRP) or ring opening polymerization (ROP). 1,4-Dibromo-2- (bromomethyl)benzene, 1,3-dibromo-5-(bromomethyl)benzene, and 1,4-dibromo-2,5-di(bromomethyl)benzene were used as initiators in ATRP of styrene (St) in conjunction with CuBr/2,2'-bipyridine as catalyst. 2,5-Dibromo-l,4-(dihydroxymethyl)benzene initiated the ROP of e-caprolactone (CL) in the presence of stannous octoate (Sn(Oct)2) catalyst. The reaction of these polymers with amino- or aldehyde-functionalized monoboronic acids, in Suzuki-type couplings, afforded the corresponding telechelics. Further functionalization with oxidable groups such as 2-pyrrolyl or 1-naphthyl was attained by condensation reactions of the amino or aldehyde groups with low molecular weight aldehydes or amines, respectively, with the formation of azomethine linkages. Preliminary attempts for the synthesis of fully conjugated poly(Schiff base) with polymeric segments as substituents, by oxidative polymerization of the macromonomers, are presented. All the starting, intermediate, or final polymers were structurally analyzed by spectral methods (1H NMR, 13C NMR, and IR).

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)727-743
Sayfa sayısı17
DergiJournal of Polymer Science, Part A: Polymer Chemistry
Hacim44
Basın numarası2
DOI'lar
Yayın durumuYayınlandı - 15 Oca 2006

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