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submitted on 19.10.2019 and posted on 23.10.2019by Suhua Li, Gencheng Li, Bing Gao, Sidharam
P. Pujari, Xiaoyan Chen, Hyunseok Kim, Feng Zhou, Liana M. Klivansky, Yi Liu, Hafedh Driss, Rachael E. Impey, Tatiana P. Soares da Costa, Jianmei Lu, Peng Wu, Han Zuilhof, John E. Moses, K. Barry Sharpless
The first SuFEx click chemistry synthesis of SOF4-derived copolymers based upon the polymerization of bis(iminosulfur oxydifluorides) and bis(aryl silyl ethers) is described. This novel class of SuFEx polymer presents two key characteristics: First, the newly created [-N=S(=O)F-O-] polymer backbone linkages are themselves SuFExable and primed to undergo further high-yielding and precise SuFEx-based post-modification with phenols or amines to yield branched functional polymers. Second, studies of individual polymer chains of several of these new materials indicate the presence of helical polymer structures, which itself suggests a preferential approach of new monomers onto the growing polymer chain upon the formation of the stereogenic linking moiety.
The authors declare the following competing financial interest(s): Sharpless, K. B., Wu, P.; Li, S.; Liu, Z.; Gao, B., Thionyl tetrafluoride modified compounds and uses; provisional patent application Serial Number US62/427,489, filed on Nov/29/2016. International patent application no. PCT/US2017/063746.