Chemistry

Researchers at Tohoku University and Massachusetts Institute of Technology (MIT) have unveiled new information about the anomalous dynamics at play when an electric current is applied to a new class of magnetic materials called non-collinear antiferromagnets.

Dr. Zhang Yi, the lead scientist, and his team of researchers from Canada, Singapore, the UK, have successfully completed a study, comparing the efficiency of various bioreactors in producing Raspberry Ketone through Submerged Fermentation. This research marks the first time such a study has been conducted.

Soft metal-organic polymer networks can adsorb selected molecules from gas mixtures by opening pores when the molecules bind.

Enantioselection with neither chiral catalysis nor chiral ingredients (absolute enantioselection) has been one of the most active topics of interest but its experimental realizations have been challenging. A team led by researchers at the Institute for Molecular Science (IMS) demonstrated the enantioselectivity of helical supramolecules consisting only of achiral molecules solely by exploiting chiral-induced spin selectivity (CISS) effect. The helicity of the supramolecules is created not by microscopic molecular arrangements but by mesoscopically introduced dislocations. Now CISS effect has been revealed to be relevant for the wider class of chirality ranging from microscopic to mesoscopic length scales.

High-entropy alloys (HEA) have a unique chemical composition that makes them strong, ductile, and resistant to wear-and-tear even at high temperatures. Yet this chemical composition also makes them difficult to study. Now, a collaborative research team has created a new experimental platform that enables the control of the atomic-level structure of HEAs’ surfaces and the ability to test their catalytic properties.

succeeded in preparing atactic C1 polymers with a high melting point of up to 130 ℃ by utilizing a hydrogen-bonding interaction among amide-linkages incorporated into the polymer side-chains.

Elucidation of global anti-aromaticity (aromaticity) in homoHPHAC+ (homoHPHAC3+) with electron-accepting to electron-donating substituents

Researchers at Tohoku University have unraveled the reasons behind the underperformance of a promising field of catalysis known as dual atom catalysts (DACs). Their findings shed light on the challenges faced by DACs in converting carbon dioxide into valuable multicarbon products.

Illuminating the molecular ballet in living cells, Charting the voyage of marine plastics, A glimpse into the origins of life & Earliest human journeys to Asia. Plus Submissions open for Asia Research News 2024. Read all in the latest Editor's Choice.

Researchers from the Institute of Industrial Science, The University of Tokyo, provide physical insights into porous soft materials, which will facilitate the design of many energy, medical, and other technologies.

Tohoku University researchers have engineered a new material that overcomes some of the barriers to furthering phase change memory – a potentially revolutionary form of data storage that is still in its infancy. Using sputtering, they created a 2D Van Der Waals Chalcogenide that possesses an ultra-low melting point.

- DGIST-Chungnam National University Team Creates Real-Time Digital Twin Multiphysics Model for Predicting Electrochemical and Mechanical Properties of Micro-Particles for the First Time - Cover Paper Recognition: Chosen by Prominent Journal Advanced Energy Materials

- A research team led by Dr. Byeong-dae Choi at the Division of Electronics & Information System, DGIST, greatly improved the efficiency of electroluminescent devices by applying silver nanofilms. - This opens up the possibility of developing affordable digital film signage.

A new online platform to explore computationally calculated chemical reaction pathways has been released, allowing for in-depth understanding and design of chemical reactions.

Topological materials’ unique properties make them a great choice for making next-generation devices. In order to exploit them, it was thought that crystalline materials, where atoms are highly ordered, were needed. But now, a research group has verified that even amorphous materials, where atoms are loosely arranged, can have these special properties.

New technological development has provided further clues about the origins of life on Earth. An international research group invented an innovative X-ray spectroscopy approach that enabled them to recreate the chemical reactions occurring in liquids at the femtosecond level (a quadrillionth part of a second). They used this to examine ureas—an organic compound that underwent ionization to form some of the building blocks of life.

A New Approach for Peripheral Annelation of Porphyrinoid

Researchers from Osaka University have revealed the mechanism by which increased signaling through a pathway associated with a molecule called Wnt leads to the development of liver cancer. They identified a gene called GREB1 as a target of Wnt specifically in liver cancer. This gene alters the function of a protein called HNF4α, leading to the development of cancer. They also showed that treatment of mice with antisense oligonucleotides against GREB1 had significant anti-cancer effects.

An international team led by Professor Yan Xu from Osaka Metropolitan University has developed a groundbreaking nanofluidic device, named NANa, capable of stochastically capturing and digitally detecting individual proteins at cellular concentrations. This tool, vital for precision medicine, is designed to handle tiny volumes equivalent to a single cell's contents and can identify single biomolecules even in high-concentration environments. The team plans to conduct further demonstrations using actual cell samples and explore the integration of this tool with AI and biological big data. This research could potentially revolutionize personalized disease prevention and treatment.

Osaka Metropolitan University researchers succeeded, for the first time, in stabilizing the high-temperature phase of Li3PS4—a solid electrolyte material¬¬—thus attaining high ionic conductivity even at room temperature, using a method of rapid heating during its crystallization. This unprecedented achievement is expected to contribute to the development of materials for all-solid-state batteries with higher performance.

A key protein for sperm maturation identified, Understanding gel formation, Urine test predicts organ diseases, A laser drills holes in a graphene film. Plus in our blog - The frogs of Borneo: more than just a race. Read all in the latest Editor's Choice.

Finding lost-cost and efficient means of accelerating the oxygen evolution reaction could lead to the proliferation of water-splitting electrolyzes. Rather than adopting a time-consuming trial and error approach, an international research group has used theoretical predictions to identify and then successfully fabricate a new electrocatalyst.

An international research group has engineered a new energy-generating device by combining piezoelectric composites with carbon fiber-reinforced polymer (CFRP), a commonly used material that is both light and strong. The new device transforms vibrations from the surrounding environment into electricity, providing an efficient and reliable means for self-powered sensors.

Metamagnetic shape memory alloys (MMSMA) have negated some of the common problems associated with shape memory alloys thanks to their ability to undergo phase transformation when exposed to an external magnetic field. Yet they still lose a large amount of energy when phase transforming. Now, a research group from Tohoku University has made a significant breakthrough, developing a palladium-based MMSMA that exhibits low energy loss.

Osaka Metropolitan University scientists synthesized a novel molecule by combining dynamic covalent reactions based on organic radicals and coordination reactions. They found that the two types of reactions do not inhibit each other. Their results suggest the possibility of synthesizing materials by combining different types of reactions, which is expected to lead to the construction of structures that have never existed before.

With the need for hardware to process large amounts of digital information ever growing, researchers are working hard to improve magnetoresistive devices. The magnetoresistance ratio indicates the efficiency of these devices, the higher the better. Most magnetoresistive devices comprise magnesium oxide and iron-based magnetic alloys. But a group of researchers from Tohoku University has unveiled a new material that also exhibits enormous magnetoresistance.

Researchers at Kanazawa University report in ACS Nano how ultrathin layers of tin disulfide can be used to accelerate the chemical reduction of carbon dioxide — a finding that is highly relevant for our quest towards a carbon-neutral society.

Researchers at Tohoku University and Tsinghua University have introduced a next-generation model membrane electrode that promises to revolutionize fundamental electrochemical research.

Fragments of spherical ‘Buckyball’ molecules have stable electron-accepting ability with great practical potential.

Graphene has revolutionized materials science since its discovery in 2004, with its high electron mobility, mechanical strength, and thermal conductivity. But processing graphene at the micro/nanoscale is a challenging process that often involves large-scale equipment and complex operations. Now, Tohoku University researchers have applied their simple femtosecond laser technique to ultra-thin atomic layers of graphene, resulting in multi-point hole drilling without damaging the graphene film.