Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/63058
Título: | Study of cationic N-isopropylacrylamide-styrene copolymer latex particles using fluorescent probes |
Autor(es): | Castanheira, Elisabete M. S. Martinho, J. M.G. Duracher, D. Charreyre, M. T. Elaïssari, A. Pichot, C. |
Data: | 28-Set-1999 |
Editora: | American Chemical Society |
Revista: | Langmuir |
Resumo(s): | Monodisperse cationically charged core-shell poly[styrene/N-isopropylacrylamide] latexes, differing in their shell structure, were studied at temperatures around the lower critical solution temperature (LCST) of poly[N-isopropylacrylamide]. Near the LCST, a transition on the latex dimensions was observed by quasi-elastic light scattering measurements. The same transition could also be detected using the intensity ratio of the pyrene fluorescence vibronic bands, I1/I3, and the excimer to monomer fluorescence intensity ratio of 1,10-bis(1-pyrenyl)decane. The fluorescence spectra and decay curve measurements of 1,10-bis-(1-pyrenyl)decane provided a better understanding of both the hydrophilic-hydrophobic variation and the conformational changes occurring in the poly[N-isopropylacrylamide] shell of the latex particles upon temperature variation. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/63058 |
DOI: | 10.1021/la990130p |
ISSN: | 0743-7463 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - FAMO - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Langmuir_Latex_1999.pdf | 116,2 kB | Adobe PDF | Ver/Abrir |