Cryo-TEM and molecular rotor fluorescence as complementary techniques for the characterization of cationic amphiphilic copolymer microdomains in aqueous medium
✍ Scribed by Benjelloun, Abdesselam; Brembilla, Christelle Geoffroy-Chapotot Alain; Adrian, Marc; Viriot, Marie-Laure; Lochon, Pierre
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 517 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0959-8103
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✦ Synopsis
The behaviour in aqueous medium of cationic amphiphilic copolymers derived from 3-vinylpyridine has been studied. The ability of these polymers to form hydrophobic microdomains was shown by ýuorescence spectroscopy using a molecular rotor as a ýuorescent probe, and the resulting structure was visualized by cryo-transmission electron microscopy (cryo-TEM). The parameters (shape and size) obtained from cryo-TEM are discussed in relation to the copolymer composition and the local viscosity deüned by the rotor ýuorescence quantum yield.