Abstract
Data on various types of organic dyes based on fluorene and its derivatives, including polymethine, styryl, triphenylmethane, spiran, merocyanine, porphyrin and polymeric dyes, as well as azo dyes and donor–acceptor polyenes, are described systematically. The key methods for their synthesis are considered. The properties of the dyes are analyzed and summarized. The principles of development of modern functional materials based on these dyes are outlined. The use of these materials in advanced fields of science and technology such as photovoltaics, electroluminescence, nonlinear optics, holography, sensing photodynamic therapy are considered. The bibliography includes 476 references.