u00b0 c purged with n 2 for 10 min and sealed these solutions were subjected to u03b3 irradiation of 1 m rad using co 60 source for 4 h the solid formed was washed with water and dried in an oven at 50 u00b0 c this resulted in 5 70 9 43 and 14 27 g of polymer material with 4 8 and 12 mm of functional monomer respectively the polymer embeded erbium ion was leached with 50 v v hcl while stirring for 6 h this resulted in 4 14 7 52 and 11 29 g of polymer material with 4 8 and 12 mm of functional monomer respectively after drying in an oven at 50 u00b0 c 1 0 mm of erbium chloride 0 44 g 3 0 mm of dcq 0 64 g and 2 0 mm of vp 0 21 g were taken in 50 ml r b flask and solubilized in 10 ml of 2 methoxyethanol by stirring 8 mm of mma 0 8 g 32 mm of egdma 6 35 g and 50 mg of aibn were added and stirred until a homogenous solution is obtained the monomer mixtures are then transferred into test tubes cooled to 0 u00b0 c purged with n 2 for 10 min and sealed these solutions were polymerized by subjecting to uv irradiation 300 nm for 4 8 and 16 h the solid formed was washed with water and dried in an oven.