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Slaybaugh, Amy Thesis Final.pdf (4.2 MB)

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Structure-Property Relationships In PAEs Prepared From 2-(2,4-difluorophenyl)benzoxazole Derivatives

Slaybaugh, Amy
http://rave.ohiolink.edu/etdc/view?acc_num=wright1526553989709853

Abstract Details

2018, Master of Science (MS), Wright State University, Chemistry.
The synthesis of N-heterocycle functionalized poly(arylene ether)s, derived from 2-(2,4-difluorophenyl)benzoxazole, was explored. The platform monomer, 2-(2,4-difluorophenyl)benzoxazole (3), was prepared in one-step and characterized using NMR spectroscopy and elemental analysis. The “pre” approach involved introducing a carbazole moiety, using a copper catalyzed C-N coupling reaction, while the “post” approach required conversion of monomer 3 to the corresponding poly(arylene ether)s (PAE)s first, then performing the C-N coupling reaction. Both “pre” and “post” approaches utilized bisphenol-A (BPA) and 4,4’-difluorophenylsulfone (DPS) as comonomers as well as 4,4’-dihydroxydiphenyl ether (DPE) and 4,4’difluorotriphenylphosphine oxide (dfTPPO). All of the materials had sufficient molecular weights (Mn) to allow good films to be cast. The polymers possessed excellent thermal stability as evidenced by 5% weight loss temperatures (Td-5%) above 400°C in nitrogen and air while glass transition temperatures (Tg) were all above 180°C. In general, the polymers containing TPPO and DPE had higher Tg values and Td-5% values.
Eric Fossum, Ph.D. (Advisor)
Kenneth Turnbull, Ph.D. (Committee Member)
David Dolson, Ph.D. (Committee Member)
96 p.
Chemistry; Organic Chemistry
PAEs; difluorophenyl; benzoxazole;

Recommended Citations

Citations

  • Slaybaugh, A. (2018). Structure-Property Relationships In PAEs Prepared From 2-(2,4-difluorophenyl)benzoxazole Derivatives [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1526553989709853

    APA Style (7th edition)

  • Slaybaugh, Amy. Structure-Property Relationships In PAEs Prepared From 2-(2,4-difluorophenyl)benzoxazole Derivatives. 2018. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1526553989709853.

    MLA Style (8th edition)

  • Slaybaugh, Amy. "Structure-Property Relationships In PAEs Prepared From 2-(2,4-difluorophenyl)benzoxazole Derivatives." Master's thesis, Wright State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1526553989709853

    Chicago Manual of Style (17th edition)

wright1526553989709853
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© 2018, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.