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Touched by Light: Photoexcited Stannyl Anions Are Great for Producing Organotin Compounds

Published: May 14, 2021
Scientists at Tokyo Institute of Technology developed a new strategy for producing a wide range of organotin compounds, which are the building blocks of many organic synthesis methods. Their approach is based on the photoexcitation of stannyl anions, which alters their electronic state and increases their selectivity and reactivity to form useful compounds. This protocol will be helpful for the efficient synthesis of many bioactive products, novel drugs, and functional materials.
Organotin compounds, also known as stannanes, are made of tin (Sn), hydrocarbons, and sometimes other elements like nitrogen and oxygen. During the 1970s, stannanes rapidly took the spotlight as building blocks in the field of organic synthesis mainly because of their use as reagents in the Stille reaction, which remains essential for chemists to combine various organic molecules. ....

United States , Chao Wang , Ken Tanaka , Kyoka Sakamoto , Masanobu Uchiyama , Kazunori Miyamoto , Yuki Nagashima , Shinshu University , Scientists At Tokyo Institute Of Technology , Chemical Technology , School Of Pharmaceutical Sciences , Tokyo Institute Of Technology , Cluster For Pioneering Research , Department Of Chemical Science , Journal Of The American Chemical Society , Information On School Of Materials , University Of Tokyo , School Of Materials , Research Initiative For Supra , Tokyo Institute , New Type , American Chemical , Assistant Professor Yuki Nagashima , American Chemical Society , Pharmaceutical Sciences , Chemical Science ,

Unusual semimetal shows evidence of unique surface conduction states

Credit: Masaki Uchida
Scientists at Tokyo Institute of Technology experimentally verify the existence of exotic surface conduction states in topological semimetals (TSMs), materials that lie at the boundary between conductors and insulators, by performing voltage scans of these surface states on a thin film sample of a TSM. The findings can pave the way for future study and exploitation of such conduction states in realizing novel, quantum transport phenomena.
All of us are probably familiar with the idea of conductors and insulators. But what would you call a material that can conduct on the surface but insulate on the inside? Physicists call it a topological insulator (TI), a term that highlights the geometric aspect of its strange conduction behavior. Even stranger than TIs are topological semimetals (TSMs) bizarre materials that straddle the boundary between metals (conductors) and insulators. ....

Masaki Uchida , Nature Communications , Scientists At Tokyo Institute Of Technology , Tokyo Institute Of Technology , Tokyo Institute , Associate Professor Masaki Uchida , மசாகி உசிதா , இயற்கை தகவல்தொடர்புகள் , விஞ்ஞானிகள் இல் டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , டோக்கியோ நிறுவனம் ,

Touched by light: Photoexcited stannyl anions are great for producing organotin compounds

Tokyo Institute of Technology
Scientists at Tokyo Institute of Technology developed a new strategy for producing a wide range of organotin compounds, which are the building blocks of many organic synthesis methods. Their approach is based on the photoexcitation of stannyl anions, which alters their electronic state and increases their selectivity and reactivity to form useful compounds. This protocol will be helpful for the efficient synthesis of many bioactive products, novel drugs, and functional materials.
Organotin compounds, also known as stannanes, are made of tin (Sn), hydrocarbons, and sometimes other elements like nitrogen and oxygen. During the 1970s, stannanes rapidly took the spotlight as building blocks in the field of organic synthesis mainly because of their use as reagents in the Stille reaction, which remains essential for chemists to combine various organic molecules. ....

United States , Yuki Nagashima , Journal Of The American Chemical Society , University Of Tokyo , Scientists At Tokyo Institute Of Technology , Tokyo Institute Of Technology , Tokyo Institute , American Chemical Society , Assistant Professor Yuki Nagashima , Tokyo Institute Of Technology , American Chemical Society , University Of Tokyo , ஒன்றுபட்டது மாநிலங்களில் , இதழ் ஆஃப் தி அமெரிக்கன் இரசாயன சமூகம் , பல்கலைக்கழகம் ஆஃப் டோக்கியோ , விஞ்ஞானிகள் இல் டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , டோக்கியோ நிறுவனம் , அமெரிக்கன் இரசாயன சமூகம் ,

Giant Electronic Conductivity Change Driven by Artificial Switch of Crystal Dimensionality

Giant Electronic Conductivity Change Driven by Artificial Switch of Crystal Dimensionality
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Takayoshi Katase , Osaka University , Scientists At Tokyo Institute Of Technology , National Institute For Materials Science , Tokyo Institute Of Technology , Tokyo Institute , National Institute , Materials Science , ஒசகக பல்கலைக்கழகம் , விஞ்ஞானிகள் இல் டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , தேசிய நிறுவனம் க்கு பொருட்கள் அறிவியல் , டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , டோக்கியோ நிறுவனம் , தேசிய நிறுவனம் , பொருட்கள் அறிவியல் ,

Quantum Mysteries: Probing an Unusual State in the Superconductor-Insulator Transition

Published: January 6, 2021
Scientists at Tokyo Institute of Technology approach the two decade-old mystery of why an anomalous metallic state appears in the superconductor-insulator transition in 2D superconductors. Through experimental measurements of a thermoelectric effect, they found that the quantum liquid state of quantum vortices causes the anomalous metallic state. The results clarify the nature of the transition and could help in the design of superconducting devices for quantum computers.
The superconducting state, in which current flows with zero electrical resistance, has fascinated physicists since its discovery in 1911. It has been extensively studied not only because of its potential applications but also to gain a better understanding of quantum phenomena. Though scientists know much more about this peculiar state now than in the 20th century, there seems to be no end to the mysteries that superconductors hold. ....

Koichiro Ienaga , Scientists At Tokyo Institute Of Technology , Department Of Physics , Information On School Of Science , School Of Science , Tokyo Institute Of Technology , Tokyo Institute , Quantum Fluctuations Leading , Anomalous State , Tokyo Tech , Physical Review , Assistant Professor Koichiro Ienaga , Anomalous Metallic State , Disordered Superconducting Thin , Creating Knowledge , Quantum Mysteries Probing An Unusual State In The Superconductor Insulator Transition , University Of Science And Technology , National University , விஞ்ஞானிகள் இல் டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , துறை ஆஃப் இயற்பியல் , தகவல் ஆன் பள்ளி ஆஃப் அறிவியல் , பள்ளி ஆஃப் அறிவியல் , டோக்கியோ நிறுவனம் ஆஃப் தொழில்நுட்பம் , டோக்கியோ நிறுவனம் , டோக்கியோ தொழில்நுட்பம் , உடல் விமர்சனம் ,