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Giant Molecular Shape Amphiphiles Based on Polyhedral Oligomeric Silsesquioxane: Molecular Design and “Click” Synthesis

Liu, Chang
http://rave.ohiolink.edu/etdc/view?acc_num=akron1367933162

Abstract Details

2013, Master of Science, University of Akron, Polymer Science.
Previous research in our group has revealed that the giant molecular shape amphiphiles (GMSAs) based on polyhedral oligomeric silsesquioxane (POSS) and polystyrene (PS) can self-assemble into various micro-phase separated ordered structures due to the shape imcommensurateness and chemical incompatibility between the molecular building blocks. In contrast to their block copolymer analogues, feature sizes of the formed nanostructures can reach sub-10 nm scales, which is still a challenging task for block copolymer based materials. To further investigate the micro-phase separation properties of POSS based GMSAs, the degree of shape imcommensurateness should be enlarged and the effect of molecular architecture should also be considered. Following a recently developed sequential “click” strategy combined the utilization of “click” adaptor molecules, two novel series of GMSAs, which are: (1) two functionalized POSS cages tethered to one PS chain end (2DPOSS-PS), and (2) one functionalized POSS cage tethered to the core of one star-PS with three identical arms (DPOSS-3PS), have been designed and synthesized in an efficient and modular manner. The work discussed here provides necessary topological variations to our current libraries of GMSAs and thus allows systematic study on the self-assembly behaviors of our GMSA systems.
Stephen Z. D. Cheng, Dr. (Advisor)
Toshikazu Miyoshi, Dr. (Committee Member)
80 p.
Polymer Chemistry

Recommended Citations

Citations

  • Liu, C. (2013). Giant Molecular Shape Amphiphiles Based on Polyhedral Oligomeric Silsesquioxane: Molecular Design and “Click” Synthesis [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367933162

    APA Style (7th edition)

  • Liu, Chang. Giant Molecular Shape Amphiphiles Based on Polyhedral Oligomeric Silsesquioxane: Molecular Design and “Click” Synthesis. 2013. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1367933162.

    MLA Style (8th edition)

  • Liu, Chang. "Giant Molecular Shape Amphiphiles Based on Polyhedral Oligomeric Silsesquioxane: Molecular Design and “Click” Synthesis." Master's thesis, University of Akron, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367933162

    Chicago Manual of Style (17th edition)

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© 2013, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.