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Novel Approach to Polyhedral Oligmeric Silsesquioxane-Based Giant Surfactants Basd on Thiol-Michael Addition "Click" Reaction

Zhu, Sunsheng
http://rave.ohiolink.edu/etdc/view?acc_num=akron1399555570

Abstract Details

2014, Master of Science, University of Akron, Polymer Science.
Nowadays, giant molecules have been focused by a series of researches for the different sizes-structural engineering to design materials. Based on composition, shape and structure, they can be classified into giant surfactants, giant shape amphiphilies and giant polyhedral. Taking advantages of these giant molecules will overcome defects existing in traditional route of creation materials from atoms. Among them, with a polar and shape-persistent molecular nanoparticles tethered by flexible polymers, giant surfactants is the common element for molecular fabrication. Unlike absence of sharp microphase separation in small surfactants and short of tiny segregation pattern in block copolymers, giant surfactant can keep precisely defined shape, structure and functionalities to bridge the gap by capturing the structural features from small molecules but at the large size. Several self-assembly behavior morphologies in solution, bulk and thin film have been developed in our group. Since their valuable hierarchical structures which can be extended, we have developed the precise and efficient “sequential click strategy” to achieve a certain giant molecule structure. This method makes use of the common click reactions like CuAAC and thiol-ene reaction. However, only using these two methods will limit the development of new generations of giant surfactants. In this thesis, another click reaction—thiol-Michael addition reaction—is introduced into our system. The synthesis of a precisely defined giant surfactant consisting of one polar polyhedral oligomeric silsesquioxanes (POSS) tethered with one, two and four polystyrene (PS) tails in one site is reported. The final product is fully characterized by 1H NMR, 13C NMR, MALDI-TOF mass spectrum. And then, thermogravimetry (TGA) and differential scanning calorimetry (DSC) are employed for the thermal analysis. Finally, the morphology of self-assembly behavior of these giant surfactants will be characterized by TEM and X-ray experiments in the future.
Stephen Z.D. Cheng, Dr. (Advisor)
Yu Zhu, Dr. (Committee Member)
70 p.
Polymer Chemistry; Polymers

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Citations

  • Zhu, S. (2014). Novel Approach to Polyhedral Oligmeric Silsesquioxane-Based Giant Surfactants Basd on Thiol-Michael Addition "Click" Reaction [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1399555570

    APA Style (7th edition)

  • Zhu, Sunsheng. Novel Approach to Polyhedral Oligmeric Silsesquioxane-Based Giant Surfactants Basd on Thiol-Michael Addition "Click" Reaction. 2014. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1399555570.

    MLA Style (8th edition)

  • Zhu, Sunsheng. "Novel Approach to Polyhedral Oligmeric Silsesquioxane-Based Giant Surfactants Basd on Thiol-Michael Addition "Click" Reaction." Master's thesis, University of Akron, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1399555570

    Chicago Manual of Style (17th edition)

akron1399555570
591
© 2014, some rights reserved.Creative Commons License Novel Approach to Polyhedral Oligmeric Silsesquioxane-Based Giant Surfactants Basd on Thiol-Michael Addition "Click" Reaction by Sunsheng Zhu is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Akron and OhioLINK.