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Solvent Isotope Effect and Hydrogen Bond Effect on The Self-assembly Process of Macroions

Yidan, Shen
http://rave.ohiolink.edu/etdc/view?acc_num=akron1522256710854143

Abstract Details

, Master of Science, University of Akron, Polymer Science.
Macroions are nanoscale ions which have a unique solution behavior that can self-assembly into 3D, single layer, hollow spherical, vesical-like structure called “blackberry” structure. There is a critical problem that how the like-charged macroions could stay together to form the beautiful structure. Studying the self-assembly process by regulating the dielectric constant of solvent and the charge density of polyoxometalates (POMs), the major driving force of the self-assembly process is the counterion mediate attraction. Similarly, the nano-sized metal-organic nanocages also have the same self-assembly behaviors. Moreover, the self-recognition was found during blackberry formation process of two mixed POMs with different charge densities. It is intriguing that the solution properties are of great importance on the behaviors of macroions. The solvent isotopic effect may also have great effect on the self-assembly process. Herein, we report the disparity in the assembly behavior of macroions induced by isotopic substitution of Protium (H) to Deuterium (D) in solvent molecules. The assembly rate is slower in D2O than H2O due to the stronger D-bond or higher viscosity in D-solvent. Meanwhile, the assembly sizes of different macroions have different trend. For strong electrolyte such as {SrPd12} and {U60} with alkali metal ions as counterions, they have been demonstrated similar assembly sizes in both solvents; while the weak acid type POMs {Mo72Fe30} shows unusually larger assembly size in H2O, which comes from the higher degree of deprotonation in H2O strengthening the hydrogen bond to provide extra attraction between macroions.
Tianbo Liu (Advisor)
Toshikazu Miyoshi (Committee Member)
Polymers
Isotope effect; hydrogen bond; self-assembly; macroions

Recommended Citations

Citations

  • Yidan, S. (n.d.). Solvent Isotope Effect and Hydrogen Bond Effect on The Self-assembly Process of Macroions [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1522256710854143

    APA Style (7th edition)

  • Yidan, Shen. Solvent Isotope Effect and Hydrogen Bond Effect on The Self-assembly Process of Macroions. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1522256710854143.

    MLA Style (8th edition)

  • Yidan, Shen. "Solvent Isotope Effect and Hydrogen Bond Effect on The Self-assembly Process of Macroions." Master's thesis, University of Akron. Accessed APRIL 20, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=akron1522256710854143

    Chicago Manual of Style (17th edition)

akron1522256710854143
342
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This open access ETD is published by University of Akron and OhioLINK.