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Abstract:

The interaction of rose Bengal (RB) and fluorescein (FL) with poly[diallyldimethylammonium] chloride (PDDA) was studied in layer-by-layer self-assembled thin films and in solution. The spectroscopic behavior is explained in terms of dye-dye, dye-polyelectrolyte, and in solution, dye-solvent interactions. A correlation among dye hydrophobicity, aggregation tendency, polymer folding in solution, and the stability of self-assembled films is obtained. In spite of the very high dye concentration (∼1 M), RB-PDDA multilayer thin films are able to photogenerate singlet molecular oxygen, as demonstrated by chemical monitoring and IR phosphorescence detection. © 2010 American Chemical Society.

Registro:

Documento: Artículo
Título:Dye-polyelectrolyte layer-by-layer self-assembled materials: Molecular aggregation, structural stability, and singlet oxygen photogeneration
Autor:Mirenda, M.; Strassert, C.A.; Dicelio, L.E.; Román, E.S.
Filiación:INQUIMAE/DQIAyQF, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pab. II, C1428EHA, Argentina
CeNTech, Physikalisches Institut Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, D-48149, Germany
Palabras clave:fluorescein; fluorescence; layer-by-layer self-assembly; rose bengal; singlet molecular oxygen; Chemical monitoring; Diallyldimethylammonium chlorides; Dye concentration; Layer by layer self assembly; Layer-by-layers; Molecular aggregation; Multi-layer thin film; Photogeneration; Polyelectrolyte layers; Polymer folding; Rose Bengal; Self assembled films; Self assembled material; Self assembled thin film; Singlet molecular oxygen; Singlet oxygen; Solvent interactions; Spectroscopic behavior; Structural stabilities; Chemical detection; Chlorine compounds; Dyes; Film preparation; Fluorescence; Multilayer films; Multilayers; Polyelectrolytes; Polymer films; Self assembly; Stability; Molecular oxygen
Año:2010
Volumen:2
Número:6
Página de inicio:1556
Página de fin:1560
DOI: http://dx.doi.org/10.1021/am100195v
Título revista:ACS Applied Materials and Interfaces
Título revista abreviado:ACS Appl. Mater. Interfaces
ISSN:19448244
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19448244_v2_n6_p1556_Mirenda

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Citas:

---------- APA ----------
Mirenda, M., Strassert, C.A., Dicelio, L.E. & Román, E.S. (2010) . Dye-polyelectrolyte layer-by-layer self-assembled materials: Molecular aggregation, structural stability, and singlet oxygen photogeneration. ACS Applied Materials and Interfaces, 2(6), 1556-1560.
http://dx.doi.org/10.1021/am100195v
---------- CHICAGO ----------
Mirenda, M., Strassert, C.A., Dicelio, L.E., Román, E.S. "Dye-polyelectrolyte layer-by-layer self-assembled materials: Molecular aggregation, structural stability, and singlet oxygen photogeneration" . ACS Applied Materials and Interfaces 2, no. 6 (2010) : 1556-1560.
http://dx.doi.org/10.1021/am100195v
---------- MLA ----------
Mirenda, M., Strassert, C.A., Dicelio, L.E., Román, E.S. "Dye-polyelectrolyte layer-by-layer self-assembled materials: Molecular aggregation, structural stability, and singlet oxygen photogeneration" . ACS Applied Materials and Interfaces, vol. 2, no. 6, 2010, pp. 1556-1560.
http://dx.doi.org/10.1021/am100195v
---------- VANCOUVER ----------
Mirenda, M., Strassert, C.A., Dicelio, L.E., Román, E.S. Dye-polyelectrolyte layer-by-layer self-assembled materials: Molecular aggregation, structural stability, and singlet oxygen photogeneration. ACS Appl. Mater. Interfaces. 2010;2(6):1556-1560.
http://dx.doi.org/10.1021/am100195v