Malik, Mah-noor

Ocheje, Michael

Rondeau-Gagne, Simon

Yadiki, Madhumitha

English

Scholarship at UWindsor

University of Windsor Scholarship at UWindsor UWill Discover Undergraduate Conference UWill Discover 2020 Pyrazine as Noncovalent Conformational Locks in Semiconducting Polymers for Enhanced Charge Transport and Stability in Thin Film Transistors Mah-noor Malik University of Windsor, malik12o@uwindsor.ca Madhumitha Yadiki University of Windsor, yadiki@uwindsor.ca Michael Ocheje University of Windsor, ochejem@uwindsor.ca Simon Rondeau-Gagne University of Windsor, simon.rondeau-gagne@uwindsor.ca Follow this and additional works at: https://scholar.uwindsor.ca/uwilldiscover Malik, Mah-noor; Yadiki, Madhumitha; Ocheje, Michael; and Rondeau-Gagne, Simon, "Pyrazine as Noncovalent Conformational Locks in Semiconducting Polymers for Enhanced Charge Transport and Stability in Thin Film Transistors" (2020). UWill Discover Undergraduate Conference. 18. https://scholar.uwindsor.ca/uwilldiscover/2020/online/18 This Event is brought to you for free and open access by the Conferences and Conference Proceedings at Scholarship at UWindsor. It has been accepted for inclusion in UWill Discover Undergraduate Conference by an authorized administrator of Scholarship at UWindsor. For more information, please contact scholarship@uwindsor.ca. Abstract Title:  Pyrazine as Noncovalent Conformational Locks in Semiconducting Polymers for Enhanced Charge Transport and Stability in Thin Film Transistors  Abstract: π-Conjugated semiconducting polymers are the topic of extensive research for various applications to next generation organic electronics. Despite their good charge transport (conductivity), current polymers lack an effective shape and structure conformability. This is an important drawback as the production of new technology now requires mechanical robustness and flexibility. Therefore, new design strategies towards new conjugated polymers with better charge transport and mechanical properties would be highly desirable and would provide new opportunities for the fabrication of low-cost and large area electronic devices.  Our group recently developed a new family of conjugated polymers based on diketopyrrolopyrrole (DPP), an electroactive pigment.  By chemical synthesis, the addition of a thiophene-flanked pyrazine moiety was performed. The DPP units, in conjunction with the pyrazine-containing moieties, facilitated a conformational locking effect through non-covalent nitrogen-sulfur interactions. Interestingly, this conformational locking effect, once  enabled into the polymers, improved the electronic properties and charge transport, as they increase molecular planarity. The new polymer’s charge mobility was measured through the fabrication of thin film transistors and exhibited an improvement in comparison to the thiophene analogue. Various techniques were used for the characterization of the new materials, such as atomic force microscopy (AFM) and X-ray diffraction. Our results indicated that pyrazine moieties led to an optimal morphology for devices, which was  smooth in the solid-state with large crystalline domains.  This presentation will highlight the key points of a novel polymer design and discuss the application of the new materials towards the fabrication of low-cost conductive polymers.   

Pyrazine as Noncovalent Conformational Locks in Semiconducting Polymers for Enhanced Charge Transport and Stability in Thin Film Transistors

https://scholar.uwindsor.ca/cgi/viewcontent.cgi?article=1687&context=uwilldiscover

Pyrazine as Noncovalent Conformational Locks in Semiconducting Polymers for Enhanced Charge Transport and Stability in Thin Film Transistors

Abstract

Similar works

Full text

Available Versions

Scholarship at UWindsor