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Fluorescence to study aggregation of amphiphilic copolymers in aqueous media
Author(s) -
Frochot Céline,
Brembilla Alain,
Lochon Pierre,
Viriot MarieLaure
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991410124
Subject(s) - copolymer , amphiphile , aqueous solution , pyrene , fluorescence , polymer chemistry , materials science , aqueous medium , bromide , chemistry , chemical engineering , organic chemistry , polymer , physics , quantum mechanics , engineering
Random copolymers of 3‐hexadecyl‐1‐vinylimidazolium bromide and N‐vinyl‐2‐pyrrolidinone were synthesized by free radical copolymerization at various feed compositions. These copolymers, whose structure was determined by 13 C NMR spectrometry, self‐aggregate in aqueous media. The formation of the resulting hydrophobic microdomains was analyzed by spectrofluorimetry, using pyrene and a molecular rotor as fluorescent tracers. The results are discussed in relation to the molecular structure of the copolymers, particularly for the case of the micro cohesion sensed by the molecular rotor.