An Eu-containing luminous hydrogel was synthesized by free radical copolymerization and ester hydrolysis. The hydrogel exhibits strong red fluorescence, excellent thermal stability and superhydrophilicity.

Er organic complexes are generally used in polymer-based optical amplifiers by doping. This study presents a method for creating an Er-containing photosensitive polymer by free radical copolymerization. Two types of Er organic complexes containing polymeric reactivity groups are synthesized and investigated. Er(TTA) 2 (Phen)(MA), which has high photoluminescence, was polymerized with glycidyl 10 methacrylate (GMA) for use as a novel UV-written polymer material. Poly (GMA-co-Er(TTA) 2 (Phen)(MA) were prepared with different proportions of Er, and their spectroscopic properties were investigated in detail. Polymer films with the optimum proportion (the molar ratio of GMA and Er(TTA) 2 (Phen)(MA) was 115:1) exhibited good UV-light lithograph sensitivity, narrow near-infrared luminescence, good thermal stability (T d : up to 303 °C), and solvent resistance after crosslinking. Micro 15 patterns with smooth top surfaces were fabricated from the resulting polymer by direct UV exposure and chemical development.

A practical and efficient method for the synthesis of α-fluorothioacrylamide was developed from selective defluorinative sulfuration of trifluoropropanamides with disulfides. The N-chelation-assisted copper-catalyzed defluorination and sulfurization reactions feature excellent functional group tolerance and incorporation of both sulfur atoms of disulfides into acrylamides.

No abstract