Synthesis of SPB-Br

WT Wei Tang
ZY Zhen Yang
LH Liangcan He
LD Liming Deng
PF Parinaz Fathi
SZ Shoujun Zhu
LL Ling Li
BS Bo Shen
ZW Zhantong Wang
OJ Orit Jacobson
JS Jibin Song
JZ Jianhua Zou
PH Ping Hu
MW Min Wang
JM Jing Mu
YC Yaya Cheng
YM Yuanyuan Ma
LT Longguang Tang
WF Wenpei Fan
XC Xiaoyuan Chen
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DPP-Sn (0.85 g, 1 mmol), DPP-Br (0.39 g, 0.5 mmol), fluorine-based monomer 1 (0.29 g, 0.5 mM), bis(triphenylphosphine)palladium(II) dichloride (7.1 mg, 0.01 mmol), and 2,6-di-tert-butylphenol (4.2 mg, 0.02 mmol) were mixed in a 10 mL Schlenk flask. Next, 3 mL of toluene and a stirring bar were added. The mixture was subjected to three freeze–pump–thaw cycles before being filled with argon. Then, the flask was heated to 100 °C under vigorous stirring for 6 h. After the reaction, the green solution was dropwisely added to excess methanol to precipitate out solid crude product. The product was collected by filtration and purified by re-dissolving into tetrahydrofuran (THF) and precipitating with excess methanol. After repeating this purification process three times, the final SPB-Br polymer was obtained (1.22 g, yield: 80%).

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