Type of Document Dissertation Author Liu, Shu URN etd-02272007-092408 Title Molecular necklaces : polyester rotaxanes Degree PhD Department Chemistry Advisory Committee
Advisor Name Title Gibson, Harry W. Committee Chair Dorn, Harry C. Committee Member Marand, Hervé L. Committee Member McGrath, James E. Committee Member Tanko, James M. Committee Member Keywords
- transesterification polymerization
Date of Defense 1995-01-05 Availability restricted Abstract
Polyrotaxanes consisting of 30-60 membered aliphatic crown ether macrocycles whose cavities are pierced by polysebacate chains were synthesized by several polymerization approaches including transesterification polymerization, the acid chloride method, and interfacial polymerization.
The polyrotaxanes were purified by multiple reprecipitations into good solvents for the crown ethers. In some cases the threaded macrocycles are constrained onto polymer chains by the incorporation of monofunctional blocking groups at polymer chain ends, or by the copolymerization of a difunctional blocking group with other monomers.
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