Design of Efficient Yellow to Near-infrared Bis-cyclometalated Iridium(III) Phosphors via Ancillary Ligand Modification

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dc.contributor.advisorTeets, Thomas S.
dc.contributor.committeeMemberBao, Jiming
dc.contributor.committeeMemberBrgoch, Jakoah
dc.contributor.committeeMemberDaugulis, Olafs
dc.contributor.committeeMemberHalasyamani, P. Shiv
dc.creatorLai, Po-Ni
dc.creator.orcid0000-0003-0308-8442
dc.date.accessioned2020-06-04T02:41:32Z
dc.date.createdMay 2020
dc.date.issued2020-05
dc.date.submittedMay 2020
dc.date.updated2020-06-04T02:41:33Z
dc.description.abstractLuminescent transition metal complexes, especially ones that contains iridium, have attracted considerable attention due to their unique photophysical properties and their applications in optoelectronic technology, photocatalysis, and phosphorescent probes in biological systems. Due to their continued development and implementation in applications, careful control and optimization of photophysical and electrochemical properties of these complexes are needed, motivating studies to understand structural-property relationships in order to design top performing molecular phosphors. While many iridium(III) complexes were designed, those emitting in the blue-green to yellow regions of the visible spectrum have already achieved near unity quantum yields. The luminescence quantum yields in the long wavelength regions (orange, red, and near-infrared) region tend to be intrinsically low for common structure types in this class. This dissertation is mainly focused on exploring ligand design strategies for new iridium(III) complexes. Chapter 1 introduces general photophysical principles of transition metal complexes with a brief overview of classes of cyclometalated iridium(III) complexes. In Chapters 2–4, various new designs of bis-cyclometalated iridium(III) complexes are presented and organized according to emission color ranging from green to yellow, red, and near-infrared regions with detailed studies of their electrochemistry and photophysical properties.
dc.description.departmentChemistry, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.citationPortions of this document appear in: Lai, Po-Ni, Caroline H. Brysacz, Md Kamrul Alam, Nicholas A. Ayoub, Thomas G. Gray, Jiming Bao, and Thomas S. Teets. "Highly efficient red-emitting bis-cyclometalated iridium complexes." Journal of the American Chemical Society 140, no. 32 (2018): 10198-10207. And in: Lai, Po‐Ni, and Thomas S. Teets. "Ancillary Ligand Effects on Red‐Emitting Cyclometalated Iridium Complexes." Chemistry–A European Journal 25, no. 23 (2019): 6026-6037. And in: Na, Hanah, Po− Ni Lai, Louise M. Cañada, and Thomas S. Teets. "Photoluminescence of Cyclometalated Iridium Complexes in Poly (methyl methacrylate) Films." Organometallics 37, no. 19 (2018): 3269-3277. And in: Lai, Po-Ni, and Thomas S. Teets. "Effects of electron-rich ancillary ligands on green and yellow-emitting bis-cyclometalated iridium complexes." Journal of Coordination Chemistry 72, no. 8 (2019): 1238-1252.
dc.identifier.urihttps://hdl.handle.net/10657/6704
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. UH Libraries has secured permission to reproduce any and all previously published materials contained in the work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectMolecular Engineering
dc.subjectLight-Emitting Materials
dc.subjectIridium Complexes
dc.titleDesign of Efficient Yellow to Near-infrared Bis-cyclometalated Iridium(III) Phosphors via Ancillary Ligand Modification
dc.type.dcmiText
dc.type.genreThesis
local.embargo.lift2022-05-01
local.embargo.terms2022-05-01
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentChemistry, Department of
thesis.degree.disciplineChemistry
thesis.degree.grantorUniversity of Houston
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy

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