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Dissertation_TL_19JUL2021.pdf (18.6 MB)

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Bis(imidazolyl)carbazolide Platinum(II) Alkynyls: Synthesis, Characterization, and Photophysical Properties

Liska, Tadeas
http://orcid.org/0000-0001-5739-1602
http://rave.ohiolink.edu/etdc/view?acc_num=case1626960987919156

Abstract Details

2021, Doctor of Philosophy, Case Western Reserve University, Chemistry.
The scope of this dissertation is the synthetic design and fundamental characterization of a novel type of platinum based lumophore. The discovery of a new type of cyclometallated Pt(II) phosphor that features a rare tetrahedrally distorted geometry and emits efficiently in solid state or as a 2 % (w/w) PMMA film is detailed. The bis(imidazolyl)carbazolide ligand is utilized as a monoanionic tridentate scaffold from which to design a family of Pt(II) complexes with variable alkynyl ligands. Full synthetic procedures are developed and optimized. Computational modeling with TD-DFT complements experimental data to rationally design complexes with charge-transfer character responsible for their emissive state. Physical characterization of crystal structure, thermal stability, and electrochemical probing are undertaken. The resulting species are found to have no close-contacts between Pt(II) centers due to their unusual and bulky geometries. The species are all strongly emissive in the solid state with up to 93 % quantum yield and all feature long lived millisecond excited state decay lifetimes. Similarly dispersions in PMMA film also experience significant enhancement in emission parameters as compared to when they are in solution. As a result significant thermal non-radiative relaxation is implicated that is attenuated when the species are in a rigidified state or matrix.
Thomas Gray (Advisor)
Geneviève Sauvé (Committee Chair)
John Protasiewicz (Committee Member)
Shane Parker (Committee Member)
Ina Martin (Committee Member)
240 p.
Analytical Chemistry; Chemistry; Condensed Matter Physics; Inorganic Chemistry; Materials Science; Molecular Chemistry; Organic Chemistry; Physical Chemistry; Technology

Recommended Citations

Citations

  • Liska, T. (2021). Bis(imidazolyl)carbazolide Platinum(II) Alkynyls: Synthesis, Characterization, and Photophysical Properties [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1626960987919156

    APA Style (7th edition)

  • Liska, Tadeas. Bis(imidazolyl)carbazolide Platinum(II) Alkynyls: Synthesis, Characterization, and Photophysical Properties . 2021. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1626960987919156.

    MLA Style (8th edition)

  • Liska, Tadeas. "Bis(imidazolyl)carbazolide Platinum(II) Alkynyls: Synthesis, Characterization, and Photophysical Properties ." Doctoral dissertation, Case Western Reserve University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1626960987919156

    Chicago Manual of Style (17th edition)

case1626960987919156
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© 2021, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.