Ji-Young Shin's Group
Research Projects
Molecular Structures & Structural Dynamics
Our research aims to systematically investigate practical and functional organic and organometallic compounds comprising π-conjugates on quasi-electron delocalization, exhibiting intrinsic electronic & magnetic properties on the individual molecular system and enabling the initial system to transform smartly to another, which inter-convertibly induces various dynamics. π-Conjugates, a significantly unique class offering diverse electromagnetic and optoelectronic behaviors, provide a keen interest and fashionable molecular structures like classical, isomeric, contracted, and expanded porphyrins, expose versatility in potential applications to various science and engineering fields. Furthermore, extended π-conjugates can expose electromagnetic dynamics on the molecular frameworks, inducing flexible mobilities and different packing dynamics in multiple states. Our alternative focus is developing dual-ion secondary batteries with organic electrode materials that demonstrate durable electrochemical properties and rapid charge-discharge behaviors across multiple redox states, capable of both intrinsic and extrinsic mechanical behaviors. ​
Electronic and Magnetic Properties
of Organic Compounds and Metal-Organic Complexes
Exploration of Novel Functional Molecules Created with Polypyrrolyl Oligomers
Exploration of novel porphyrinoids and their applications
​​​Organic-based molecules are being considered as electrode materials for secondary batteries due to their lower environmental impact and improved safety compared to inorganic materials. Although inorganic molecules have been traditionally popular as electrode materials, the focus on achieving stable multi-redox states and reproducible redox-interconversions with delocalized organic π-conjugation frameworks has promoted the development of highly efficient battery electrode materials. π-Conjugation frameworks previously investigated in former researches are thoroughly reviewed to identify suitable electrode materials.
The exploration of novel electrode materials is conducted based on specific criteria as follows.​​
[Key 1] The ‘chemical/ electromagnetic property,’ highly effective in electrochemical performances, is essential. Low HOMO-LUMO gab of antiaromatic compounds can be beneficial for efficient electrochemical performances. The applicant has reported that nickel norcorrole (NiNc), having antiaromaticity, sequentially engaged the active cathode in secondary lithium or sodium batteries, which gave rise to highbattery efficiency.​
[Key 2] Chemical deformation during battery processes is unpleasant and fails faultless electrochemistry. Consequently, ‘chemical stability’ is vital to inventing practical battery electrode materials.​
[Key 3] Great permeability of solid states with chemical durability influences fruitful liquid ionic mobilities of ion liquid electrolyte, resulting in fast and secure charging/discharging processes as discussed in our current report (Batter. Supercaps 2021, 4, 1605).​
[Key 4] The number of electrons conducting the battery performance is sufficiently vital.
