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¦Â-CyD (4.4 mmol) and a steroid as the template (1.5 mmol unless noted otherwise) were dissolved in dry DMSO (50 mL), and toluene 2,4-diisocyanate (TDI, 28 mmol) was added. After being magnetically stirred at 65 ¡ãC for 2 h, the gel formed was chopped into pieces, washed with acetone, and ground with mortar and pestle. The polymer was sufficiently washed with hot water, tetrahydrofuran (THF), and hot ethanol to remove the template molecule, ¦Â-CyD, and TDI. СµÜÏëÇë½ÌÎÄÏ×ÖÐÌáµ½µÄ±ûͪ£¬ÈÈË®£¬ËÄÇâ߻ૣ¬ºÍÒÒ´¼·Ö±ðÏ´ÍÑʲôÎïÖÊ£¿ |
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