Langmuir and Langmuir-Blodgett Films of Organic Dye-Inorganic Nanosheet Hybrids

Hybridization with Ca2Nb3O5− (CNO) nanosheets maybe effective for immobilizing positively charged functional organic molecules on various inorganic materials. To prove this hypothesis, amphiphilic cyanine dyes have been spread on to the surface of a diluted CNO colloidal suspension. The dyes have formed Langmuir films with enlarged molecular areas due to the hybridization. The hybrid Langmuir films have been transferred on to solid substrates by means of the conventional vertical dipping method. Spectroscopic characterization of the obtained Langmuir-Blodgett films has suggested that organic-inorganic sandwiched structures are realized.