Research Areas

One of the primary research pursuits within our laboratory centers on the conceptualization of metal-free organic phosphorescent materials. We have formulated a molecular design framework aimed at the realization of entirely organic phosphors that exhibit a remarkable emission quantum yield, even at room temperature, inclusive of the presence of oxygen. Through a systematic and judicious integration of heavy atom effects via intermolecular halogen bonding within crystalline aromatic carbonyl compounds, we have achieved a significant enhancement in the efficiency of triplet state generation while concurrently suppressing the dissipation of vibrational energy. Furthermore, by modulating the electron density within these organic phosphorescent materials, we have successfully achieved dynamic control over their emission color. Presently, our research endeavors are focused on the development of a second generation of organic phosphors, characterized by ultrafast microsecond-scale emissions. This innovative approach holds the potential to revolutionize the current landscape of optoelectronic devices by ushering in new paradigms and applications.

Sensitivity and selectivity are the most important parameters of a sensor. Nature provides high fidelity in biosynthesis. The unique combination of this specificity of the bio-system and the tunable properties of synthetic polymers would be a promising direction toward molecular sensors with high selectivity and sensitivity. We are developing molecular biosensors and bio-microarrays through bio-/synthetic hybrid systems for clinically important biological materials. In our lab, we’re all about creating super-smart color-changing sensors. We mostly use polydiacetylene (PDA) sensor that can change color when stress is induced on its liposome. The stress originates from target moieties, like ions, gases, or even viruses. We have been working for many years to improve the selectivity and sensitivity of PDA sensors. Recently, we came up with a clever trick called the “dummy molecule approach.” It’s like giving our sensors a boost, making them even better at detecting things accurately. We’re also using our cool purely organic phosphors to detect hypoxia in eyes. This could be a game-changer for easy monitoring of oxygen level in eye. We have teamed up with Professor Yannis Paulus from the Kellogg Eye Center to make it happen.

Our research endeavors encompass a multifaceted spectrum of expertise, spanning the domains of organic phosphors, biosensors, and the innovative realm of mussel-inspired coatings. Through a systematic and rigorous investigative approach, we have successfully achieved a robust interfacial adhesion between these coatings and diverse substrates. Building upon this foundational knowledge, our current research trajectory is directed towards harnessing the intrinsic properties of these coatings for the capture of carbon dioxide (CO₂) from the ambient air. We are also actively investigating the possibility of using dopamine chemistry to improve durability and sustainability in pavement materials. This interdisciplinary amalgamation of knowledge and techniques holds profound implications for addressing pressing environmental challenges. If you require further elucidation or have specific inquiries, please do not hesitate to seek additional information.