Premium
Synthesis of Well‐defined Amphiphilic Block Copolymers by Organotellurium‐Mediated Living Radical Polymerization (TERP)
Author(s) -
Kumar Santosh,
Changez Mohammad,
Murthy C. N.,
Yamago Shigeru,
Lee JaeSuk
Publication year - 2011
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100277
Subject(s) - copolymer , amphiphile , polymer chemistry , molar mass distribution , polymerization , polystyrene , toluene , radical polymerization , living free radical polymerization , materials science , atom transfer radical polymerization , chemistry , polymer , organic chemistry , composite material
Low‐molecular weight amphiphilic diblock copolymers, polystyrene‐ block ‐poly (2‐vinylpyridine) (PS‐ b ‐P2VP), and (P2VP‐ b ‐PS) with different block ratios were synthesized for the first time via organotellurium‐mediated living radical polymerization (TERP). For both the homo‐ and block copolymerizations, good agreement between the theoretical, and experimental molecular weights was found with nearly 100% yield in every case. The molecular weight distribution for all the samples ranged between 1.10 and 1.24, which is well below the theoretical lower limit of 1.50 for a conventional free radical polymerization. Furthermore, a very simple approach to producing highly dense arrays of titania nanoparticles (TiO 2 ) is presented using a site‐selective reaction of titanium tetraisopropoxide within the P2VP domains of micellar film of P2VP‐ b ‐PS in toluene through the sol–gel method.