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Spatially Confined Tungstate Ion Polymerization in Microcapsules
Author(s) -
Shchukin Dmitry G.,
Dong Wenfei,
Sukhorukov Gleb B.
Publication year - 2003
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.200390069
Subject(s) - tungstate , polymerization , polyelectrolyte , materials science , polymer chemistry , styrene , capsule , chemical engineering , polymer , copolymer , composite material , engineering , metallurgy , botany , biology
A new approach for performing the WO 4 2− polymerization reaction exclusively inside polyelectrolyte capsules of a micron scale size is demonstrated. This approach is based upon a pH gradient across the capsule shell (2.5 inside the capsule volume and 6.5 outside the capsule) caused by encapsulated poly(styrene sulfonate) molecules. During the first stage of the reaction, different polytungstate anions were synthesized. Crystalline WO 3 nanoparticles were formed inside the capsule as the final polymerization product.The tungstate ion polymerization confined within a micron‐sized polyelectrolyte capsule described herein.