The quality of our life has been greatly improved with new materials. Our group is taking synthetic approaches to develop new polymeric materials, and some of our projects are outlined below.
Lithium Sensors: Lithium sensors can be employed in lithium extraction from primary lithium resources (lithium ores/brine) and secondary lithium sources (spent lithium-ion batteries). We have been developing novel small molecules and polymers for the selective detection and separation of lithium ions. Specifically, we utilized extended π-systems with lithium-chelating ligands for lithium detection using photophysical processes and chemiresistive methods. Additionally, we employed a 19F NMR-based chemical sensing system by incorporating fluorine atoms into the π-conjugated molecules.
Biobased Polymers: To transition towards a sustainable materials ecosystem, our research group focuses on the advanced synthesis of high-performance bio-derived polymers from renewable feedstocks. Rather than simply substituting petrochemical plastics, we design these bio-based macromolecules to exhibit superior structural and functional properties tailored for advanced applications. Furthermore, we are actively tackling the end-of-life challenges of robust materials by developing dynamic crosslinked polymer networks, or vitrimers. By strategically embedding reversible dynamic covalent bonds into polymer matrices, we enable the structural reconfiguration, reprocessing, and recycling of traditionally unrecyclable thermosetting plastics. Ultimately, through the integration of bio-sourced polymer platforms and dynamic adaptive chemistry, our lab strives to establish a truly circular economy for high-performance polymeric materials.
Mixed Polymer Recycling: Our research group is dedicated to advancing sustainable polymer science by developing innovative strategies for plastic recycling. A major focus of our work is achieving the efficient recycling of mixed plastic waste without the need for labor-intensive and costly prior separation. To overcome the inherent immiscibility of different polymer types in mixed waste streams, we actively design and develop novel polymeric compatibilizers. Specifically, we are exploring the synthesis of carbene-based compatibilizers that can chemically bridge distinct polymer matrices to significantly enhance their structural integrity and mechanical properties. Through these advanced molecular designs, our lab aims to transform unsorted plastic waste into high-performance upcycled materials, ultimately contributing to a circular plastics economy.
Metal-Adsorbing Membrane: To address the rapidly growing global demand for critical metals, our research group is actively developing advanced polymer membranes designed for the selective adsorption of lithium and gadolinium. We precisely engineer the molecular architectures of these membranes, incorporating highly specific chelating functionalities that exhibit exceptional affinity for target metal ions even within complex aqueous environments. Beyond the synthesis of novel capturing materials, our lab is deeply engaged in bridging the gap between material science and practical application by developing continuous adsorption process systems. By designing highly scalable, flow-based continuous extraction platforms, we are able to maximize processing throughput, separation efficiency, and long-term membrane reusability. Through this integrated approach—spanning from molecular design to system engineering—we aim to establish sustainable and commercially viable technologies for the recovery of energy-critical resources and rare earth elements.