1 2 4 triazol 1 yl phenoxide salt the solution containing npcl 2 n 0 50 g 1 36 mmol of repeating unit and dry thf 30 ml was transferred into the flask containing 4 1 2 4 triazol 1 yl phenoxide salt solution using a cannula transfer at room temperature the mixture was stirred and refluxed under n 2 for at least for 120 hours after filtration the filtrate was evaporated to give brown powder to remove salt it was washed with deionized water to further remove impurities including the starting material 1c it was then washed with hot dry thf and to yield poly bis 4 1 2 4 triazol 1 yl phenoxy polyphosphazene 1 13 g 3 09 mmol 71 as a dark brown powder 10 mmol of azole derivative was heated together with 10 mmol of 4 hydroxybenzyl alcohol at 155 u00b0 c for 30 minutes upon cooling the product was well crushed and washed with cold ethanol to remove unreacted starting materials nah 0 2254 g was dissolved in 25 ml of dry thf and 4 1h 5 methyltetrazol 1 ylmethyl phenol 1 000 g in 30 ml of thf was added 0 2286 g of npcl 2 3 dissolved in thf was also added the reaction mixture was then refluxed for 3 5 days upon cooling and the reaction mixture was filtered and the.