Artículo
Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
Impellizzeri, Stefania ; Simoncelli, Sabrina
; Fasciani, Chiara; Marin, M. Luisa; Hallett Tapley, Geniece L.; Hodgson, Gregory K.; Scaiano, Juan C.
Fecha de publicación:
08/2014
Editorial:
Royal Society of Chemistry
Revista:
Catalysis Science & Technology
ISSN:
2044-4753
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Solid niobium oxides (Nb2O5·nH2O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in an aprotic solvent. The catalysts were found to promote the generation of an active methylene from the enamine-based portion of the oxazine, which was followed by a nucleophilic attack on the aldehyde functionality of the coumarin reagent. In the resulting system, the emission of the conjugated fluorophore can be observed at 670 nm and, thus, the processes occurring at the catalyst surface can be monitored in real time by total internal reflection fluorescence microscopy (TIRFM).
Palabras clave:
Catalysis
,
Niobium Oxides
,
Oxazine
,
Single Molecule
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Articulos(CIBION)
Articulos de CENTRO DE INVESTIGACIONES EN BIONANOCIENCIAS "ELIZABETH JARES ERIJMAN"
Articulos de CENTRO DE INVESTIGACIONES EN BIONANOCIENCIAS "ELIZABETH JARES ERIJMAN"
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Impellizzeri, Stefania ; Simoncelli, Sabrina; Fasciani, Chiara; Marin, M. Luisa; Hallett Tapley, Geniece L.; et al.; Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly; Royal Society of Chemistry; Catalysis Science & Technology; 5; 1; 8-2014; 169-175
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