02108nas a2200253   4500008004100000022001400041245015000055210006900205260007300274300001200347490000700359520113700366653003801503653000901541653002101550653001601571653000801587100002201595700002601617700003001643700002201673700002801695856013101723       2012                        eng d  a1381-514800aAromatic aldehyde functionalized polycaprolactone and polystyrene macromonomers: synthesis, characterization and aldehyde-aminooxy click reaction0 aAromatic aldehyde functionalized polycaprolactone and polystyren  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a713-7210 v723 a<p>New bis-aldehyde functionalized initiators, viz, 4,4'-(4,4'-(5-hydroxypentane-2,2-diyl)bis(4,1-phenylene))bis(oxy)dibenza ldehyde (1) and 4,4'-bis(4-(4-(formylphenoxy) phenyl) pentyl 2-bromopropanoate (2) were synthesized starting from commercially available 4,4'-bis(4-hydroxyphenyl) pentanoic acid. These initiators were utilized, respectively, for ring opening polymerization of E-caprolactone and atom transfer radical polymerization of styrene. Well-defined polycaprolactone macromonomers (M-n(GPC): 2600-19400, PDI: 1.37-1.47) and polystyrene macromonomers (M-n(GPC): 2800-28200, PDI: 1.11-1.16) with bis-aldehyde functionality were synthesized. The kinetic study of styrene polymerization showed controlled polymerization behaviour. The presence of aldehyde functionality in macromonomers was confirmed by H-1 NMR spectroscopy. The reactivity of aldehyde functionality was demonstrated by carrying out aldehyde-aminooxy click reaction of polycaprolactone macromonomer with O-(2-azidoethyl) hydroxylamine which proceeded in a quantitative manner without backbone degradation. (C) 2012 Elsevier Ltd. All rights reserved.</p>10aAldehyde-terminated macromonomers10aATRP10aPolycaprolactone10aPolystyrene10aROP1 aSane, Prakash, S.1 aTawade, Bhausaheb, V.1 aPalaskar, Dnyaneshwar, V.1 aMenon, Shamal, K.1 aWadgaonkar, Prakash, P.  uhttps://library.ncl.res.in/content/aromatic-aldehyde-functionalized-polycaprolactone-and-polystyrene-macromonomers-synthesis-0