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Synthesis of poly(disulfide)s with narrow molecular weight distributions via lactone ring-opening polymerization
Sungwhan Kim1, Kamila I Wittek2, Yan Lee1
1Department of Chemistry, College of Natural Sciences, Seoul National University Seoul 08826 Korea gacn@snu.ac.kr.
Abstract:
We report the first example of controlled polymerization of poly(disulfide)s with narrow molecular weight distributions. 1,4,5-oxadithiepan-2-one (OTP), a disulfide-containing 7-membered ring lactone, was polymerized by using the diphenylphosphate (DPP) catalyzed lactone ring-opening polymerization method. The polymerization proceeded in a living manner, and the resulting polymers displayed very narrow polydispersity index (PDI) values below 1.1 and excellent backbone degradability responding to reducing conditions and UV irradiation.
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