Korea Advanced Institute of Science and Technology · Engineering
Professor Jin-Hyun Kim's research lab specializes in sustainable chemical synthesis through the integration of photobiocatalysis, artificial photosynthesis, and advanced nanomaterials. The lab focuses on developing light-driven systems that enable efficient and selective redox transformations, particularly using redox enzymes like Old Yellow Enzyme (OYE) coupled with renewable cofactor regeneration via semiconductor nanomaterials such as N-doped carbon nanodots and metal oxide heterostructures. A key research direction involves the design of bias-free photoelectrochemical systems for the valorization of abundant biomass (e.g., lignin) and CO₂ conversion into valuable chemicals like formate and chiral compounds. The lab also explores the multifunctional roles of biological redox cofactors like NAD⁺ as molecular photocatalysts, expanding their utility beyond cellular metabolism.
Figures are computed from collected data and may differ slightly.
Light-driven activation of redox enzymes is an emerging route for sustainable chemical synthesis. Among redox enzymes, the family of Old Yellow Enzyme (OYE) dependent on the nicotinamide adenine dinucleotide cofactor (NADH) catalyzes the stereoselective reduction of α,β-unsaturated hydrocarbons. Here, we report OYE-catalyzed asymmetric hydrogenation through light-driven regeneration of NADH and its analogues (mNADHs) by N-doped carbon nanodots (N-CDs), a zero-dimensional photocatalyst. Our spect
Nicotinamide adenine dinucleotide (NAD<sup>+</sup>) is a key redox compound in all living cells responsible for energy transduction, genomic integrity, life-span extension, and neuromodulation. Here, we report a new function of NAD<sup>+</sup> as a molecular photocatalyst in addition to the biological roles. Our spectroscopic and electrochemical analyses reveal light absorption and electronic properties of two π-conjugated systems of NAD<sup>+</sup>. Furthermore, NAD<sup>+</sup> exhibits a robus
A robust, scalable FeOOH/BiVO<sub>4</sub>/Cu(In,Ga)Se<sub>2</sub> tandem structure achieves unbiased, long-term photobiocatalytic conversion of CO<sub>2</sub> to formate.
Abstract Light‐driven activation of redox enzymes is an emerging route for sustainable chemical synthesis. Among redox enzymes, the family of Old Yellow Enzyme (OYE) dependent on the nicotinamide adenine dinucleotide cofactor (NADH) catalyzes the stereoselective reduction of α,β‐unsaturated hydrocarbons. Here, we report OYE‐catalyzed asymmetric hydrogenation through light‐driven regeneration of NADH and its analogues (mNADHs) by N‐doped carbon nanodots (N‐CDs), a zero‐dimensional photocatalyst.
The pulp and paper manufacturers generate approximately 50 million metric tons of lignin per annum, most of which has been abandoned or incinerated because of lignin's recalcitrant nature. Here, we report bias-free photoelectrochemical (PEC) oxidation of lignin coupled with asymmetric hydrogenation of C═C bonds. The PEC platform consists of a hematite (α-Fe<sub>2</sub>O<sub>3</sub>) photoanode and a silicon photovoltaic-wired mesoporous indium tin oxide (Si/<i>meso</i>ITO) photocathode. We subst
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