MSED Virtual Seminar
December 9, 2020 @ 1:30 pm - 3:30 pm
The Macromolecular Science and Engineering Division (MSED) of the Chemical Institute of Canada is dedicated to promoting the interests of the Canadian polymer science and engineering communities and recognizes excellence in polymer research at all levels with annual faculty, graduate, and undergraduate awards. Given the current restrictions that the COVID-19 pandemic has posed in organizing in-person conferences, and witnessing tremendous success that has been achieved by various online seminar series, MSED is initiating a series of virtual seminars (MSED-VS) to keep up the spirit of the researchers in this community, facilitate showcasing recent results, and enable researchers to connect and exchange ideas from the comfort of their home and/or office.
MSED-VS will host talks in all areas of polymer science and engineering, ranging from polymer synthesis and characterization to their applications in various exciting areas of science and technology. For the Fall season, talks will be held on a monthly basis on Wednesdays at 1:30 pm. Participation is free of charge for everyone!
Speaker: Prof. Christine Luscombe, Materials Science and Engineering Department, University of Washington, USA
Abstract: p-Conjugated polymers are being used in the fabrication of a wide variety of organic electronic devices such as organic field-effect transistors (OFETs), organic photovoltaic (OPV) devices, and organic light-emitting diodes (OLEDs). Since the seminal work on the conductivity of polyacetylene by Heeger, MacDiarmid, and Shirakawa was published in 1970s, the field of organic electronics has grown exponentially. Our group has been studying and developing techniques to grow semiconducting polymers using a living polymerization method. This has allowed us to synthesize polymer architectures that we haven’t been able to access till now including polythiophene brushes, star-shaped P3HT, as well as hyperbranched P3HT. It also allows us to accurately control the molecular weights of P3HT and produce materials with a narrow molecular weight distribution. Our unique synthetic capabilities allows us to specifically control defects in these polymers. Our work in controlling polymer defects and their effect on microstructure and thus optoelectronic properties will be presented.
More recently, we have begun to study the mechanical properties of semiconducting polymers. As the polymers’ practical applications have extended into the health and life sciences areas (e.g., electronic skins and artificial muscles), the mechanical compliance (i.e., low stiffness and high ductility) has become increasingly important. This in turn requires one to establish an understanding of the relationship between polymer structure and their mechanical properties as well as their (opto)electronic properties. In this presentation, the synthesis of a series of indacenodithiophene-based semiconducting polymers will be discussed along with the feasibility of using these polymers in stretchable devices.
The presentation will end with a perspective of unmet challenges and future directions in research.