Highly fluorescent dye-loaded zeolite L crystals, measuring approximately 1.4 µm in length and 650 nm in diameter, have been organized in a hexagonal network by a surface tension driven auto-assembly process. A polydimethylsiloxane (PDMS) film presenting a trigonal ordering of spherical protuberances, including a polystyrene (PS) hexagonal network occupying their interstices, was chosen as the platform for a surface tension driven auto-assembly. The overall wettability and the difference of surface tension between PDMS and PS surfaces were found to offer good conditions to order micrometric dye-loaded zeolite L crystals in a two dimensional hexagonal network. The resulting film displays a regular hexagonal pattern of polarized fluorescence reflecting the polarization properties of the dye molecules inserted in the parallel nanochannels of the zeolites.

Hexagonal network organization of dye-loaded zeolite L crystals by surface-tension-driven auto-assembly

Bolognesi A;Botta C;
2006

Abstract

Highly fluorescent dye-loaded zeolite L crystals, measuring approximately 1.4 µm in length and 650 nm in diameter, have been organized in a hexagonal network by a surface tension driven auto-assembly process. A polydimethylsiloxane (PDMS) film presenting a trigonal ordering of spherical protuberances, including a polystyrene (PS) hexagonal network occupying their interstices, was chosen as the platform for a surface tension driven auto-assembly. The overall wettability and the difference of surface tension between PDMS and PS surfaces were found to offer good conditions to order micrometric dye-loaded zeolite L crystals in a two dimensional hexagonal network. The resulting film displays a regular hexagonal pattern of polarized fluorescence reflecting the polarization properties of the dye molecules inserted in the parallel nanochannels of the zeolites.
2006
Istituto per lo Studio delle Macromolecole - ISMAC - Sede Milano
Assembly
Crystals
Fluorescence
Light polarization
Plastic films
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/433743
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