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Synthesis of Polycatenanes Through Molecular Design

Wu, Qiong
http://orcid.org/0000-0001-8768-7738
http://rave.ohiolink.edu/etdc/view?acc_num=case1480950518125291

Abstract Details

, Doctor of Philosophy, Case Western Reserve University, Macromolecular Science and Engineering.
Main-chain poly[n]catenanes are topological macromolecules constructed by mechanically interlocking many small cyclic monomer rings into a long chain. The mechanical bonds provide a large degree of freedom to the polymer backbone and poly[n]catenanes are predicted to have exceptional molecular flexibility and robustness. However, the synthesis of main-chain poly[n]catenanes has not been achieved. This dissertation will discuss the first successful synthetic approach toward main-chain poly[n]catenanes, utilizing the ring-closing reaction of a preassembled metallosupramolecular polymer (MSP) template from rationally designed components with an isolation yield of 75~80%. Nuclear magnetic resonance (NMR) and gel permeation chromatography-multiangle laser light scattering (GPC-MALLS) confirms the mechanical interlocking structure and high molecular weight of the polycatenanes. Further study shows the product is a mixture of linear, branched and cyclic polycatenanes, which can be separated by size exclusion chromatography. Progress toward increasing the yield of polycatenane synthesis and improving the formation of linear polycatenane will also be described.
Stuart Rowan (Committee Chair)
Emily Pentzer (Committee Member)
Jon Pokorski (Committee Member)
Michael Hore (Committee Member)
Chemistry; Polymer Chemistry; Polymers
Polycatenane; Topological Macromolecules; Mechanically Interlocked Molecules; Supramolecular Polymer

Recommended Citations

Citations

  • Wu, Q. (n.d.). Synthesis of Polycatenanes Through Molecular Design [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1480950518125291

    APA Style (7th edition)

  • Wu, Qiong. Synthesis of Polycatenanes Through Molecular Design. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1480950518125291.

    MLA Style (8th edition)

  • Wu, Qiong. "Synthesis of Polycatenanes Through Molecular Design." Doctoral dissertation, Case Western Reserve University. Accessed MAY 02, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=case1480950518125291

    Chicago Manual of Style (17th edition)

case1480950518125291
631
© , some rights reserved.Creative Commons License Synthesis of Polycatenanes Through Molecular Design by Qiong Wu is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.