Direct Heteroarylation as an Efficient Route to High-Performance pi-Conjugated Materials for use as Non-Fullerene Acceptors in Organic Solar Cells

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dc.contributor.advisorWelch, Gregory C.
dc.contributor.authorMcAfee, Seth Malcolm
dc.contributor.committeememberPiers, Warren E.
dc.contributor.committeememberSutherland, Todd C.
dc.contributor.committeememberMarriott, Robert A.
dc.contributor.committeememberLuscombe, Christine K.
dc.date2018-06
dc.date.accessioned2018-04-10T20:55:21Z
dc.date.available2018-04-10T20:55:21Z
dc.date.issued2018-04-06
dc.description.abstractThis thesis is focused on applying direct heteroarylation as an efficient and sustainable synthetic route to access high-performance pi-conjugated molecular materials for use as non-fullerene acceptors as part of the active layer component of organic solar cells. Chapter One introduces pi-conjugated materials, organic solar cells and the importance of developing sustainable and efficient methods to access high-performance materials. In Chapter Two, the discussion is focused on the optimization of cross-coupling reactions catalyzed by a robust and reusable silica-supported palladium catalyst for the synthesis of pi-conjugated materials (SM-1–3) following both traditional Stille or Suzuki couplings and highlighting the advantages of direct heteroarylation over these methods. Chapter Three focuses on expanding the substrate scope to more complicated building blocks, while also comparing direct heteroarylation to Sonogashira couplings and their respective influences on synthetic accessibility and optoelectronic properties (SM-4–5). Chapter Four applies the synthetic methods developed in Chapters Two and Three and extends these principles to the design and synthesis of a non-fullerene acceptor based on the organic dye isoindigo (SM-6). Chapter Five is a direct follow-up on the derivatization of the parent compound disclosed in Chapter Four and how synthetic modification through the versatile direct heteroarylation coupling can lead to improved device performance (SM-7–9). Chapter Six is focused on identify the most promising organic dye core structure to include between flanking perylene diimide units, an extension of previous designs utilizing isoindigo and phthalimide-flanking units (SM-10–14). Chapter Seven follows the optimization of the most promising non-fullerene acceptor from Chapter Six, with a diketopyrrolopyrrole dye core (SM-13), which was able to achieve a high power conversion efficiency of 5.6 %, which is among the best in its class. Chapter Eight explores a series of scalable donor materials that were screened with SM-13 to identify a more practical alternative to the expensive donor polymer PTB7-Th utilized in Chapter Seven and marks the conclusion of this thesis.en_US
dc.identifier.citationMcAfee, S. M. (2018). Direct Heteroarylation as an Efficient Route to High-Performance pi-Conjugated Materials for use as Non-Fullerene Acceptors in Organic Solar Cells (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/31774en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/31774
dc.identifier.urihttp://hdl.handle.net/1880/106486
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.facultyScience
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectOrganic Synthesis
dc.subjectOrganic Materials
dc.subjectOrganic Solar Cells
dc.subjectOrganic Dyes
dc.subjectPrinted Electronics
dc.subjectDirect Heteroarylation
dc.subject.classificationChemistry--Organicen_US
dc.subject.classificationEnergyen_US
dc.titleDirect Heteroarylation as an Efficient Route to High-Performance pi-Conjugated Materials for use as Non-Fullerene Acceptors in Organic Solar Cells
dc.typedoctoral thesis
thesis.degree.disciplineChemistry
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
ucalgary.thesis.checklistI confirm that I have submitted all of the required forms to Faculty of Graduate Studies.en_US
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