Chan Beum Park

Biocatalytic transformation has received increasing attention in the green synthesis of chemicals because of the diversity of enzymes, their high catalytic activities and specificities, and mild reaction conditions. The idea of solar energy utilization in chemical synthesis through the combination of photocatalysis and biocatalysis provides an opportunity to make the "green" process greener. Oxidoreductases catalyze redox transformation of substrates by exchanging electrons at the enzyme's activ

Natural photosynthesis is an effective route for the clean and sustainable conversion of CO₂ into high-energy chemicals. Inspired by the natural process, a tandem photoelectrochemical (PEC) cell with an integrated enzyme-cascade (TPIEC) system was designed, which transfers photogenerated electrons to a multienzyme cascade for the biocatalyzed reduction of CO₂ to methanol. A hematite photoanode and a bismuth ferrite photocathode were applied to fabricate the iron oxide based

Recent advances in the design of quinone-functionalized hybrid materials are reviewed based on quinone's redox, electrical, optical, and metal chelating/reducing properties to determine these materials' applications in energy harvesting and storage systems.

As a class of carbon-based nanomaterials, carbon dots (CDs) have attracted enormous attention because of their tunable optical and physicochemical properties, such as absorptivity and photoluminescence from ultraviolet to near-infrared, high photostability, biocompatibility, and aqueous dispersity. These characteristics make CDs a promising alternative photonic nanoagent to conventional fluorophores in disease diagnosis, treatment, and healthcare managements. This review describes the fundamenta

Carbon-based nanomaterials such as graphene sheets and carbon nanotubes possess unique mechanical, electrical, and optical properties that present new opportunities for tissue engineering, a key field for the development of biological alternatives that repair or replace whole or a portion of tissue. Carbon nanomaterials can also provide a similar microenvironment as like a biological extracellular matrix in terms of chemical composition and physical structure, making them a potential candidate f

A nanohybridization strategy is presented for the fabrication of high performance lithium ion batteries based on redox-active organic molecules. The rearrangement of electroactive aromatic molecules from bulk crystalline particles into molecular layers is achieved by non-covalent nanohybridization of active molecules with conductive scaffolds. As a result, nano-hybrid organic electrodes in the form of a flexible self-standing paper-free of binder/additive and current collector-are synthesized, w

Light-harvesting peptide nanotubes are synthesized by the self-assembly of diphenylalanine with THPP and platinum nanoparticles (nPt; see picture; TEOA = triethanolamine). The light-harvesting peptide nanotubes are suitable for mimicking photosynthesis because of their structure and electrochemical properties that are similar to the ones of photosystem I in natural photosynthesis.

Amyloidogenic proteins undergo an alternative folding pathway under stressful conditions leading to formation of fibrils having cross beta-sheet structure, which is the hallmark of many neurodegenerative diseases. As a means of surviving against external stress, on the other hand, many microorganisms accumulate small stress molecules to prevent abnormal protein folding and to contribute to protein stability, which hints at the efficacy of the solutes against amyloid formation. The current work d

Peptide self-assembly is an attractive route for the synthesis of intricate organic nanostructures that possess remarkable structural variety and biocompatibility. Recent studies on peptide-based, self-assembled materials have expanded beyond the construction of high-order architectures; they are now reporting new functional materials that have application in the emerging fields such as artificial photosynthesis and rechargeable batteries. Nevertheless, there have been few reviews particularly c

Graphene-based biomineral hybrid materials are synthesized by biomimetic mineralization of CO2 into CaCO3 in the presence of graphene oxide (GO) sheets. The hybrid film could be further reduced to a conductive graphene–CaCO3 hybrid film. The GO/graphene–CaCO3 hybrid showed enhanced in vitro bone bioactivity with increased hydroxyapatite formation in simulated body fluid and good osteoblast cell viability. Detailed facts of importance to specialist readers are published as ”Supporting Information

A new class of multi-electron redox phenazine was proposed to build ready-to-charge sustainable organic batteries.

Flavin Battery: Flavins are used as a molecularly tunable cathode material that reversibly reacts with two lithium ions and two electrons per formula unit. Combined ex situ analyses and DFT calculations reveal that the redox reaction occurs using two successive single-electron transfer steps at nitrogen atoms of the diazabutadiene motif (see picture). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed an