C(C1C=CC=CN=1)=C.C(=O)=O.[K:12].C1C2C(=CC=CC=2)C=CC=1.[C:23]1([CH2:29][C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1>CC(C)=O.C1COCC1>[C:23]1([CH2:29][C:30]2[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=2)[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.[K:12]First, poly(2-vinylpyridine) homopolymer was prepared by using 2-vinylpyridine (2VP) monomer at −78° C. and under high vacuum (10−6 torr) in the solvent of THF for 30 min. The temperature of −78° C. is maintained by adding dry ice in a constant-temperature bath with acetone, and measured with a thermometer for low temperature. The initiator of potassium diphenylmethane (DPM-K) was prepared by reacting potassium-naphthalene (K-NaPh) ion solution with diphenylmethane, and diluted to appropriate concentration using a distribution device connected to vacuum line. The initiator was divided into glass ampoules and stored in a low temperature refrigerator.
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