Hajiali, Mahtab; Keyvan Rad, Jaber; Ghezelsefloo, Sara; Mahdavian, Ali Reza published the artcile< Solvent-free and anticounterfeiting fluorescent inks based on epoxy-functionalized polyacrylic nanoparticles modified with Rhodamine B for cellulosic substrates>, Application In Synthesis of 950846-89-6, the main research area is epoxy functionalized polyacrylic nanoparticle anticounterfeiting fluorescent ink cellulosic substrate; rheol photophys property.
Nowadays, anticounterfeiting technol. and information security by solvent-free photoluminescent polymeric latex nanoparticles are of considerable interest in variety of hi-tech systems. Herein and for the first time, Rhodamine B ethylenediamine acrylate (N-RhBAc) was synthesized and copolymerized with Me methacrylate and glycidyl methacrylate to obtain epoxy-functionalized fluorescent latex nanoparticles (RhAcL-series) through emulsion polymerization Inclusion of N-RhBAc into the spherical polyacrylic nanoparticles with average particle size of 40-70 nm enhanced its absorption intensity (λmax of 571 nm) and emission intensity (λem of 588 nm) up to 8 and 3.5-fold with respect to N-RhBAc in the solution state (λmax of 524 nm and λem of 582 nm), resp. The nanometric size of particles and decorated epoxy functional groups on their outer layer provided well-wetting and fine-diffusion into the cellulosic nanofiber. To obtain anticounterfeiting inks with high-resolution marking on cellulosic paper without spreading and tracing, fluorescent RhAcL-1 was formulated with required thickening agent and defoamer. The painted pattern by the above ink could immediately be developed and illuminated with brilliant red-pink fluorescence emission upon UV irradiation
Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about Emulsion polymerization. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, Application In Synthesis of 950846-89-6.
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles