dc.contributor | Universidade de São Paulo (USP) | |
dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T13:22:55Z | |
dc.date.accessioned | 2022-10-05T13:09:04Z | |
dc.date.available | 2014-05-20T13:22:55Z | |
dc.date.available | 2022-10-05T13:09:04Z | |
dc.date.created | 2014-05-20T13:22:55Z | |
dc.date.issued | 2004-06-03 | |
dc.identifier | Journal of Physical Chemistry B. Washington: Amer Chemical Soc, v. 108, n. 22, p. 7033-7039, 2004. | |
dc.identifier | 1520-6106 | |
dc.identifier | http://hdl.handle.net/11449/6808 | |
dc.identifier | 10.1021/jp049778n | |
dc.identifier | WOS:000221700300023 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3883862 | |
dc.description.abstract | Poly(styrene-co-methyl methacrylate) (PS-PMMA) ionomers with several degrees of sulfonation were synthesized and characterized by infrared, UV-vis, and NMR spectroscopies, elemental analysis, and differential scanning calorimetry (DSC). Stable Langmuir films could be produced with PS-PMMA with 3 and 6 mol % of sulfonation, while PS-PMMA 8% exhibited material loss to the water subphase, probably due to its higher solubility. Surface pressure and surface potential isotherms with PS-PMMA 3% spread onto salt-containing subphases pointed to a film behavior characteristic of the polyelectrolyte effect, where charge repulsion governs the film properties. The Langmuir-Blodgett films of this ionomer were successfully transferred onto various substrates, as confirmed by UV-vis and FTIR spectroscopies. Using cycling voltammetry, we show that LB films from PS-PMMA 3% can be applied in selective sensing of dopamine, even in the presence of interferents such as ascorbic acid. | |
dc.language | eng | |
dc.publisher | Amer Chemical Soc | |
dc.relation | Journal of Physical Chemistry B | |
dc.relation | 3.146 | |
dc.relation | 1,331 | |
dc.rights | Acesso restrito | |
dc.source | Web of Science | |
dc.title | Synthesis of poly(styrene-co-methyl methacrylate)-based ionomers and their Langmuir and Langmuir-Blodgett (LB) film formation | |
dc.type | Artigo | |