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Dissertation-Anton O. Razgoniaev.pdf (5.82 MB)

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Design, synthesis, and characterization of photoresponsive materials using coordination bonds and other supramolecular interactions

Razgoniaev, Anton
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1510918007338796

Abstract Details

2017, Doctor of Philosophy (Ph.D.), Bowling Green State University, Photochemical Sciences.
When designing light-responsive, healable materials and adhesives, these materials need to include controllable reversible, bonding interactions. Such dynamic interactions are difficult to control, however. In this work, we present how these interactions can be controlled by incorporating photoactive metal ions into supramolecular polymer network what allow the tuning of optical and mechanical properties of the polymers with light. Utilizing this approach, we created a series of supramolecular polymer melts and studied their mechanical and photo physical properties. We have shown that the photochemistry and photophysical properties of the metal center can be used to control the mechanical properties of the materials, and introduce new optical and mechanical properties not seen in the traditional covalent polymers. In particular, photo-induced metal-ligand bond labilization led to partial depolymerization of the supramolecular assembly, and softening of the materials. When the light stimulus was removed, the material recovered the initial stiffness back. We also investigated structure-property relationships in such systems where mechanical properties of the supramolecular polymers are controlled by coordination environment around metal cross-linking center. We also considered how polymer host matrix impacts on the photophysical and photochemical properties of chromophores that undergo molecular motion in the exited state. In particular, change in excited state dynamics of [Cu(dmp)2]+ can be used to sense viscosity of various polymers. A linear dependence of excited state lifetime and emission wavelength on viscosity was correlated with restricted photoinduced structural distortion of Cu(I) complex in more flow-resistance media.
Alexis Ostrowski, Ph.D. (Advisor)
Scott Rogers, Ph.D. (Committee Member)
Alexander Tarnovsky, Ph.D. (Committee Member)
R. Marshall Wilson, Ph.D. (Committee Member)
145 p.
Chemistry; Materials Science; Polymer Chemistry; Polymers
Photochemistry; Chemistry; Materials Science; Polymer Chemistry; Polymers

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Citations

  • Razgoniaev, A. (2017). Design, synthesis, and characterization of photoresponsive materials using coordination bonds and other supramolecular interactions [Doctoral dissertation, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1510918007338796

    APA Style (7th edition)

  • Razgoniaev, Anton. Design, synthesis, and characterization of photoresponsive materials using coordination bonds and other supramolecular interactions. 2017. Bowling Green State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1510918007338796.

    MLA Style (8th edition)

  • Razgoniaev, Anton. "Design, synthesis, and characterization of photoresponsive materials using coordination bonds and other supramolecular interactions." Doctoral dissertation, Bowling Green State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1510918007338796

    Chicago Manual of Style (17th edition)

bgsu1510918007338796
414
© 2017, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.