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Coumarins its diverse biological activity and excellent optical performance of many chemists and pharmacologists extensive research , for example, in anti-HIV drugs , fluorescent dyes, fluorescent probes , Biomarkers and solar receivers certain aspects of the application . In particular in the field of fluorescent dye , a fluorescent coumarins intensity, fluorescence quantum yield major advantages. This thesis consists of two major parts, the first part of the small molecule coumarin Synthesis and Characterization after microencapsulation and application : first synthesized via Pechmann 7 - hydroxy-4 - (trifluoromethyl) coumarin , and then by Williamson etherification reaction to obtain a five 7 - alkoxy-4 - (trifluoromethyl) coumarin , the yield of between 74% -87 % , and 7 of them - isopropoxy-4- - (trifluoromethyl) coumarin as a core material in melamine - formaldehyde resin as wall material for microencapsulation . The resulting microcapsules of the FT-IR, size , SEM, TG tests , the particle size of the microcapsules into a normal , narrow , rough surface , having a plurality of micropores ; microcapsules order coumarin to the cotton fabric so that the fabric under UV irradiation at 365nm can send a strong blue-violet fluorescence. The second part contains coumarin unit Synthesis and characterization of polymers : acrylic acid and 7 - hydroxy-3 - carboethoxycoumarin was synthesized coumarin structure containing acrylate monomer , and and methyl methacrylate (MMA), butyl acrylate (BA), vinyl acetate (VA) in THF three monomers were copolymerized to obtain a new type of three acrylic copolymers , the the three copolymers were FT-IR, solubility , TG, GPC, ultraviolet absorption spectrum of the test. It was found that these three binary copolymer dissolved in a common solvent ; and has good thermal stability , can satisfy the requirements of the application ; three polymer has a number average molecular weight (Mn) more than in 3300 , and the polydispersity coefficient (PDI) values ??are also small ; are appeared at 290nm and 330nm of maximum absorption .
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