Chemistry

News

09 Dec 2019
Researchers at Tohoku University have discovered a way to detect carbon impurity in nitride semiconductors using light.
23 Oct 2019
Two new Pd-based initiating systems for C1 polymerization of diazoacetates were reported: Pd(nq)2/borate (nq = naphthoquinone, borate = NaBPh4) and [Pd(cod)(Cl-nq)Cl/borate] [cod = 1,5-cyclooctadiene, Cl-nq = 2,3-dichloro-1,4-naphthoquinone]. The former exhibited high activity, affording poly(alkoxycarbonylmethylene)s with high molecular weights in high yields. The latter was effective for controlling the stereostructure of the resulting polymers.
18 Oct 2019
Nitrogen-embedded polycyclic compounds with strong antiaromaticity and stability were synthesized and isolated for the first time using pyrrole as a key unit. An expedited approach toward stable antiaromatic polycyclic compounds enables not only the revealing of its fundamental properties, but also its application to organic electronic materials.
Obtained unusual nanostructures
18 Oct 2019
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.
Pyrrole- and Azulene-Fused Azacoronene Dication with 22π+6π Aromatic Rings
17 Oct 2019
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.
11 Oct 2019
The captured CO2 can be converted into useful organic materials.
25 Sep 2019
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.
Dr. Jin-Kyu Kang in the Division of Energy Technology (middle) and the research team
19 Sep 2019
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.
11 Sep 2019
Determination of the crystal structure of a DNA-stabilized silver nanocluster
31 Aug 2019
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.
29 Aug 2019
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 new type of photoconduction in a molecular crystal
29 Aug 2019
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.
27 Aug 2019
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.
27 Aug 2019
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.
27 Aug 2019
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.
GQDs, Pt nanoparticles, UNIST, Hyeon Suk Shin
26 Aug 2019
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 at DGIST (up), Bohee Kim, a Combined M.S-Ph.D. Program Student in the Department of Emerging Materials Science (below left), and Donghyun Jeong, a Combined M.S-Ph.D. Program Student.
19 Aug 2019
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.
31 Jul 2019
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.
air filter
17 Jul 2019
A molecule-trapping material that normally degrades in water remains stable after two years of humidity exposure when treated with a common skin bleach.
The Agency for Science, Technology and Research (A*STAR)
03 Apr 2019
Chemists use free radicals to produce polymers strong enough to encapsulate drugs while remaining degradable.
11 Mar 2019
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.
Palladium nanoparticles in reaction mixtures
08 Feb 2019
Adding olefin enables efficient solvent-free cross-coupling reactions, leading to environmentally friendly syntheses of a wide range of organic materials.
CPHATN-(TCB) and CPHATN-1a
08 Feb 2019
Stable, color-changing compound shows potential for electronics, sensors and gas storage.
Professor Guntae Kim and his research team
21 Jan 2019
A team of researchers has developed a system that produces electricity and hydrogen (H2) while eliminating carbon dioxide (CO2).
Image Name
18 Jan 2019
A safe and sustainable chemical reagent could aid cost-efficient development of new materials and medicines.
18 Jan 2019
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.
17 Jan 2019
South Korea's Ulsan National Institute of Science and Technology (UNIST) held a ceremony to commemorate the completion of Fraunhofer Project Center for Composites [email protected] ([email protected]).
Sir Fraser Stoddart
15 Jan 2019
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.
Future fuels
27 Nov 2018
A compound made from the glycerol by-product of biodiesel production could promote cleaner burning in vehicle engines.
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21 Nov 2018
Tohoku University researchers are optimizing methods to produce useful compounds from biomass.

Events

14 Jan 2020 to 17 Jan 2020
Organised by the National Research Foundation (NRF) Singapore, the Global Young Scientists Summit (GYSS) brings together distinguished scientists, post-graduates and academics for four days of learning and mentoring from 14 to 17 January 2020.
29 Oct 2019 to 01 Nov 2019
The Singapore International Energy Week (SIEW) is an annual platform for energy professionals, policymakers and commentators to share best practices and solutions within the global energy space.

Researchers

Prof. SU-IL IN has been working at DGIST (Daegu Gyeongbuk Institute of Science & Technology) since 2012. He served as Dean of International and External Affairs 2016 ~ 2017. He received his Ph.D. in Chemistry from University of Cambridge in 2008. Subsequently he was a postdoctoral researcher at Technical University of Denmark by 2010. Then he joined the Pennsylvania State University as a postdoctoral researcher in the Department of Chemistry before joining DGIST. Professor In’s current researches include synthesis and analysis of functional nano (bio)-materials for environmentally friendly renewable energy such as photovoltaic, heterogeneous catalysis and biocatalysts. (https://insuil.dgist.ac.kr/)
Dr. Omachi is Associate Professor, Research Center for Materials Science, Nagoya University