N-Benzylated Poly(vinylamine): Synthesis, Characterization, and Catalytic Activity in Ester Cleavage

Autor:	Michel Morcellet, Alain Pollet, Bernard Martel
Rok vydání:	1994
Předmět:	Tris chemistry.chemical_classification Polymers and Plastics Chemistry Potassium Organic Chemistry chemistry.chemical_element Buffer solution Polymer Fluorescence Catalysis Inorganic Chemistry chemistry.chemical_compound Hydrolysis Polymer chemistry Materials Chemistry Copolymer Organic chemistry
Zdroj:	Macromolecules. 27:5258-5262
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma00097a003
Popis:	Poly(vinylamine) (2) and copolymers (3) resulting from various degrees of substitution (DS) with benzyl groups were synthesized. The viscosity of the polymers measured in Tris buffer (μ= 0.05 M) at different pH values decreases with the increase of the hydrophobic character, and 3 takes a very tight conformation for DS> 50%. A fluorescence study was carried out using potassium 2-p-toluidinylnaphthalene-6-sulfonate (TNS) as the hydrophobic probe. We showed the existence of an apolar microdomain which is at the origin of the solubilizing power of 3. The hydrolysis of p-nitrophenyl acetate (PNPA) carried out at 25°C in Tris buffer solution (pH= 8.74; μ= 0.05 M) was accelerated up to 20-fold compared to the 2 catalyzed reaction
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::20b4148289e5e5e3ae1cd0ceda0ad8ad https://doi.org/10.1021/ma00097a003 Zobrazit plný text záznamu