Zeolite L has been shown to be a successful host material for preparing a large variety of inorganic/organic hybrids. The channel entrances of the zeolite L are of a diameter of 0,71 nm and therefore, by tuning the size and the shape of the organic guest, one can make those guests enter one by one due to size restrictions. Once in the channels, well chosen dye molecules stay separated one from another which leads to a higher photoluminescence quantum yield. A challenge concerning such host guest compounds is to be able to optically or electronically address the dye inside the zeolite channels. Another interesting feature is to obtain organised functional hybrid thin films with a high concentration of non aggregated dye loaded zeolite L crystals and to use those thin films as active layers for devices such as light emitting diodes (LED). Some of these systems lead to very efficient two step energy transfers from the conjugated polymer to the dye included inside the inorganic host. New perspectives for the fabrication of novel devices based on zeolite L crystals can be introduced through using those systems which could have an enormous potential in the fields of lighting, and displays but also to mimic the energy conversion process during photosynthesis.

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