A5002878032- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Sulfur-Based Synthesis Techniques
- Synthesis and properties of polymers
- Photochemistry and Electron Transfer Studies
- Organic and Molecular Conductors Research
- Synthesis of heterocyclic compounds
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
University of Toronto
2017-2022
Toronto Public Health
2020
University of British Columbia
2015
Organic electrodes are promising candidates for next-generation lithium-ion batteries due to their low cost and sustainable nature; however, they often suffer from very conductivity active material loadings. The conventional binder used in organic-based Li-ion is poly(vinylidene fluoride) (PVDF), yet it electrochemically inactive thus occupies volume mass without storing energy. Here, we report an organic mixed ionic-electronic conducting polymer,...
A series of donor–acceptor (D–A) and donor–acceptor–donor (D–A–D) molecules containing anthracene chromophores paired with a sulfur-containing acceptor group have been prepared. The oxidation state the sulfur atom controls degree charge transfer character in excited wave function. Steady-state photoluminescence spectroscopy shows more pronounced solvatochromism increasing state. Computational methods (DFT/TD-DFT) are used to show that orbital mixing between donor is facilitated as increased.
Thionated naphthalene diimides (NDIs) are promising materials for n-type organic semiconductors; despite their potential, synthetic routes to thionated NDIs generally lengthy, nonselective, and low yielding polymeric analogues have yet be reported in the literature. Here, we describe rapid selective thionation of thiophene- selenophene-flanked using microwave irradiation excess Lawesson's reagent. Remarkably, >99% conversion trans-dithionated product is observed by NMR within 45 min. Steric...
Chalcogen substitution is commonly used in the design of new organic semiconductors. Oxygen-sulfur rylene diimides, particular, optimizes optoelectronic and physical properties this promising class n-type materials, resulting up to three orders magnitude improvements electron mobilities. Herein, we describe our recent efforts synthesize, characterize, investigate photophysical, electronic, solid-state behavior diimide-based small molecules polymers with varying degrees thionation.
While controlled chain-growth polymerizations have been developed for a handful of p-type conjugated polymers, most n-type polymers are still synthesized through step-growth methods that offer little to no control over the polymerization. The anion-radical polymerization thiophene-flanked naphthalene diimides has shown exhibit non-living behavior; however, limited few examples varying degrees control. Strategies improve and expand scope this promising methodology not developed. In study, we...
Templated oxidative polymerization affords organic soluble, oxidatively doped PEDOT-based polymers with controlled molecular weights and low dispersities (<italic>Đ</italic> ∼ 1.2) for the first time.