Author: 공과대학 교학팀

Applications of Additive Manufacturing to Mobility Industries

This lecture aims to explore the potential impact of 3D printing on the automotive and construction fields. With the rapid development of 3D printing technology, it has become increasingly feasible to create complex, customized parts and structures that were previously impossible or prohibitively expensive using...

Polymeric Materials for Energy Storage Applications

Polymeric Materials for Energy Storage Applications Soojin Park Department of Chemistry, POSTECH (email: soojin.park@postech.ac.kr) Riding on the rapid growth in electric vehicles and the stationary energy storage market, high-energy-density lithium-ion batteries and next-generation rechargeable batteries (i.e., advanced batteries) have been long-accepted as essential building blocks for future technology...

ITER plasma operational space and scenarios

Occurrence, detection, and distribution of microplastic and -associated ARGs in the Upper Region of Han River

The behavior of nanoscale zerovalent iron in aqueous phases

Stretchable Electronics: Materials, Fabrication, and Applications

Stretchable Electronics: Materials, Fabrication, and Applications   Ja Hoon Koo1   1Department of Semiconductor Systems Engineering, Sejong University, Seoul 08826, Republic of Korea.   Stretchable devices based on high-performance inorganic materials require the use of stretchable device designs such as wavy interconnects and kirigami structures, which sacrifices the device density to...

Augmented Aquacatalysis to Access SuFEx Click Hubs

Water-Accelerated Synergistic Organocatalysis to Access Alkylsulfonyl Fluorides as Efficient SuFEx Hubs     Han Yong Bae Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea E-mail: hybae@skku.edu   Along with the significant demand for sustainable homogeneous catalysis, the importance of efficient synthesis and simple purification of complex organic compounds is attracting attention.1 In this presentation, a series of water-accelerated chemical transformations will be discussed. Firstly, unprecedented N-heterocyclic carbene (NHC)-catalyzed aza-Michael addition reaction is shown to access β-aminosulfonyl fluorides, which are key hubs of the sulfur(VI) fluoride exchange (SuFEx) reaction.2 In addition, new methods based on high-turnover catalytic Michael and thia-Michael addition reactions via significant hydrophobic amplification are displayed.3–5 Finally, the synergistic action of a hydrophobic Brønsted acid in combination with a hydrogen-bonding donor activator enabled the formation of the three-component Petasis-type allylation reaction.6 The developed exceptionally mild but potent catalytic systems facilitated a broad substrate scope, and enabled efficient multi-gram scalabilities. As a crucial reaction medium in all cases, water considerably augmented the reaction rate with excellent chemo- and site-selectivity (up to >99:1) compared to conventional organic solvents....