Bifunctional imidodiphosphoric acid-catalyzed controlled/living ring-opening polymerization of trimethylene carbonate resulting block, α,ω-dihydroxy telechelic, and star-shaped polycarbonates

Xiaojiang He, Yufeng Ji, Yu Jin, Suli Kan, Haidong Xia, Jia Chen, Bingqi Liang, Hao Wu, Kai Guo, Zhenjiang Li