Chemistry

A research team of Ehime University paved a way to achieve unexplored III-V semiconductor nanostructures. They grew branched GaAs nanowires with a nontoxic Bi element employing characteristic structural modifications correlated with metallic droplets, as well as crystalline defects and orientations. The finding provides a rational design concept for the creation of semiconductor nanostructures with the concentration of constituents beyond the fundamental limit, making it potentially applicable to novel efficient near-infrared devices and quantum electronics.

Polycyclic heteroaromatic molecules are a highly useful class of organic materials. In this study, synthesis of a new azacoronene, in which both pyrrole and azulene moieties are circularly fused, was achieved in just three steps. This new azacoronene exhibited multistep reversible oxidations under electrochemical and chemical conditions. Formation of an aromatic 22π-electron conjugation and a tropylium cation (6π-electron conjugation) in the dicationic state played a key role in stabilizing this cationic species.

The captured CO2 can be converted into useful organic materials.

A new type of degradable synthetic polymer was prepared by Rh-catalyzed three-component polymerization of a bis(diazocarbonyl) compound, bis(1,3-diketone), and tetrahydrofuran. The resulting polymer, poly(β-keto enol ether), was highly sensitive to mild acidic conditions and degraded into a combination of well-defined low molecular weight compounds. With this unique degradability, the polymer could be utilized as an environmentally friendly polymeric material.

DGIST Division of Energy Technology achieves the highest photoelectric conversion efficiency in the world. Huge expectations toward the commercialization of flexible solar cell that is applicable in various fields.

Determination of the crystal structure of a DNA-stabilized silver nanocluster

South Korea's Ulsan National Institute of Science and Technology (UNIST) ranks 20th out of 351 participating universities from 60 countries, according to the 2019 THE Young University Rankings. Besides, in terms of citations, UNIST ranked 1st in South Korea and 7th in the world.

South Korea's Ulsan National Institute of Science and Technology (UNIST) has been ranked 68th globally and 1st in South Korea in the 2019 CWTS Leiden Ranking.

A highly conducting state has been found in a molecular crystal under UV-irradiation. The state reversibly appears in accordance with UV-irradiation, but does not appear by any other method such as raising the temperature, which often induces metallic behavior in insulating molecular crystals. The UV-excited state exhibits conduction and magnetic behavior characteristic of metallic substances. The result suggests that there is an optically accessible, but thermally inaccessible, state of matter.

South Korea's Ulsan National Institute of Science and Technology (UNIST) has received 1 Gold, 6 Silver, and 2 Special awards at the 25th Samsung Humantech Paper Awards ceremony.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled a new way to turn discarded eggshells into hydrogen, an innovative and alternative energy for the future.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has presented noble catalysts for water electrolysis, capable of generating hydrogen and oxygen at the same time.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has introduced a novel technology, capable of fabricating highly ordered arrays of graphene quantum dot (GQD). This research has gained much attention from academia since it was introduced in the February 2019 issue of Nature Nanotechnology.

DGIST Professor Jaeheung Cho in the Department of Emerging Materials Science secured materials that lead aldehyde deformylation reaction. Confirmed the nucleophilic reactions by biomimetic materials… Expects to bring positive impacts on related research.

Now in its 12th edition, the Singapore International Energy Week (SIEW) is a premier platform in Asia for energy insights, partnerships and dialogues, which brings together the world’s leading conferences, exhibitions and roundtables in one week, one location.

A molecule-trapping material that normally degrades in water remains stable after two years of humidity exposure when treated with a common skin bleach.

Chemists use free radicals to produce polymers strong enough to encapsulate drugs while remaining degradable.

Scientists at The Hong Kong University of Science and Technology (HKUST) (HKUST) won three of the seven awards presented by the Croucher Foundation this year.

Adding olefin enables efficient solvent-free cross-coupling reactions, leading to environmentally friendly syntheses of a wide range of organic materials.

Stable, color-changing compound shows potential for electronics, sensors and gas storage.

A team of researchers has developed a system that produces electricity and hydrogen (H2) while eliminating carbon dioxide (CO2).

A safe and sustainable chemical reagent could aid cost-efficient development of new materials and medicines.

Seven faculty members of South Korea's Ulsan National Institute of Science and Technology (UNIST) have distinguished themselves with inclusion in the Global Highly Cited Researchers 2018 List.

South Korea's Ulsan National Institute of Science and Technology (UNIST) held a ceremony to commemorate the completion of Fraunhofer Project Center for Composites Research@UNIST (FPC@UNIST).

Sir Fraser Stoddart, 76, Nobel Prize in Chemistry (2016) and Head of the Stoddart Mechanostereochemistry Group, Department of Chemistry, Northwestern University, will be delivering a lecture on 24th January during the Global Young Scientists Summit (2019) in Singapore.

A compound made from the glycerol by-product of biodiesel production could promote cleaner burning in vehicle engines.

Tohoku University researchers are optimizing methods to produce useful compounds from biomass.

Understanding the effect pressure has on soot production during fuel combustion could help reduce polluting emissions.

A metal-organic framework that selectively removes impurities from natural gas could allow greater use of this cleaner fossil fuel.

Korean researchers have developed new photocatalyst synthesis method using Magnesium hydride (MgH2) and Titanium dioxide (TiO2). The result is expected to contribute to hydrogen mass production through the development of photocatalyst that reacts to solar light.