Photopolymerization and Characterization of Tetraphenylethene-Doped Luminescent Polymer

Tetraphenylethene (TPE) is a kind of organic compound with excellent aggregation-induced emission (AIE) property. TPE molecules in aggregated or solid state have a significant fluorescence enhancement effect compared to that in a dilute solution. This effect has attracted world-wide attention in the field of photo-functional materials and devices. In this research, luminescent polymer is prepared by TPE-doped photo-sensitive resin with the method of ultra-violet (UV) assisted polymerization. Photopolymerization rate and photoluminescent spectra are characterized to investigate effects of the composition of resin on the properties of products. In addition, patterns are successfully prepared with the TPE-doped resin via inkjet printing and emit visible blue luminescence when excited by UV light, showing significant AIE effect in the solid state. This research demonstrates that UV-photopolymerization is an effective method for preparing polymers functionalized by AIE moieties, and provides a basis for the further development of novel anti-counterfeiting printing materials and photo-functional materials.