Supramolecular strategies using the layer-by-layer sequential assembly technique: applications for PLED and LC display devices and biosensors

Layered Multicomposites by Sequential Adsorption (LAMSA) is layer by layer approach for ultrathin film fabrication that has been applied to a variety of organic and inorganic materials. In this paper, we present our objectives and work on the fabrication and modification of display devices and sensors primarily using LAMSA techniques. The term supramolecular layer assembly denotes the selective incorporation of processing techniques, layer configuration and molecular ordering that is achieved within planar devices. The first application involves modifying a polymer light emitting diode (PLED) device fabricated using the ITO/MEH-PPV/Ca protocol with ultrathin polyaniline derivatives. The second example involves photoinduced alignment in a hybrid LC cell configuration using polarized light with azo dye/polyelectrolyte ultrathin films. A supramolecular concept on substrates for opto-bioelectronic sensor configurations is described.