Iridium-catalyzed Z-retentive asymmetric allylic substitution reactions
In synthetic organic chemistry, Z-olefins are a challenging synthetic target to produce in the lab due to their relative thermodynamic instability. The Z-olefins form an unsaturated compound with a CnH2n formula that can be readily isomerized. Analog.....»»
Uncontrolled chemical reactions fuel crises at LA County"s two largest landfills
Hundreds of feet underground, in a long-dormant portion of Chiquita Canyon landfill, tons of garbage have been smoldering for months due to an enigmatic chemical reaction......»»
Computational model captures the elusive transition states of chemical reactions
During a chemical reaction, molecules gain energy until they reach what's known as the transition state—a point of no return from which the reaction must proceed. This state is so fleeting that it's nearly impossible to observe it experimentally......»»
Three novel inorganic clusters accelerate chemical reactions to create carbon–carbon bonds
Perfume, rubbing alcohol, a cholesterol medication and even biological processes all depend on a chemical process called the aldol reaction. The reaction primarily combines compounds to form carbon–carbon bonds, which are incredibly strong and prov.....»»
Green hydrogen: Improving the stability of iridium catalysts with titanium oxides
Anodes for the electrolytic splitting of water are usually iridium-based materials. In order to increase the stability of the iridium catalyst, a team at HZB and a group at HI-ERN have now produced a so-called material library: a sample in which the.....»»
Apple Music collaborative playlists add emoji reactions in iOS 17.3 beta
In addition to the new Stolen Device Protection feature, iOS 17.3 beta 1 also re-adds support for collaborative playlists in Apple Music. This time, there’s a fun twist: you can now react to songs in a shared playlist with emojis through a new Tapb.....»»
Researchers develop chiral boryl radical catalysts in asymmetric catalysis
Researchers from the University of Science and Technology of China of the Chinese Academy of Sciences, and collaborators, have developed an innovative chiral boryl radical catalysis method, enabling asymmetric catalytic radical cycloisomerization rea.....»»
New insight on electrochemical reactions—advancing the green transition
Electrochemical reactions are central to green transitions. These reactions use electric current and potential difference to carry out chemical reactions, which enables binding and realizing electric energy from chemical bonds. This chemistry is the.....»»
A catalyst for electronically controlled C–H functionalization
The Chirik Group at the Princeton Department of Chemistry is chipping away at one of the great challenges of metal-catalyzed C–H functionalization with a new method that uses a cobalt catalyst to differentiate between bonds in fluoroarenes, functio.....»»
Engineers develop a way to determine how the surfaces of materials behave
Designing new compounds or alloys whose surfaces can be used as catalysts in chemical reactions can be a complex process relying heavily on the intuition of experienced chemists. A team of researchers at MIT has devised a new approach using machine l.....»»
Rambus launches Quantum Safe Engine for data center and government hardware security
Rambus has unveiled the availability of a Quantum Safe Engine (QSE) for integration into hardware security elements in ASICs, SoCs and FPGAs. Quantum computers will enable adversaries to break current asymmetric encryption, placing important data and.....»»
Research shows how important protein keeps our cell membranes in balance
Lipids are the main constituents of our cell membranes, which are formed as lipid bilayers. The distribution of lipids is far from uniform; it is asymmetric, with different lipid compositions in the outside and inside layers. This asymmetry is essent.....»»
The Beyhive gets in formation for Beyoncé"s "Renaissance" film: The best reactions from opening weekend
Fans react to 'Renaissance: A Film by Beyoncé' after opening weekend. Beyoncé knows how to put on a silver-studded show — IRL or in the theater.This weekend, Renaissance: A Film by Beyoncé hit number one in its opening week.....»»
Pressure-cooking birch leaves to produce raw material for organic semiconductors
Today, petrochemical compounds and rare metals such as platinum and iridium are used to produce semiconductors for optoelectronics, such as organic LEDs for super-thin TV and mobile phone screens. Physicists at Umeå University in collaboration with.....»»
macOS Sonoma: How to control reaction effects with hand gestures
Can you really call yourself a Mac power user without mastering the new Reactions feature in macOS Sonoma? Apple has been tinkering with software features for improving webcam video quality for a few years. macOS Sonoma takes a more fun approach with.....»»
How to use Reactions in video calls in iOS 17 and iPadOS 17
Just as macOS Sonoma has introduced gesture-based reactions in video calls, the same feature has come to iOS 17 and iPadOS 17 to add augmented reality graphics to your video calls. Here's how to use the feature on your iPhone or iPad.iOS 17 brings ba.....»»
Understanding charged particles helps physicists simulate element creation in stars
New research from North Carolina State University and Michigan State University opens a new avenue for modeling low-energy nuclear reactions, which are key to the formation of elements within stars. The research lays the groundwork for calculating ho.....»»
New fluorescence-based methods for fast and accessible light intensity measurements
Accurate measurements of light intensity provide vital data for scientists and everyday applications. For example, precise values help optimize microscopy signals, trigger physiological processes in the brain, and drive light-absorbing reactions whil.....»»
Research reveals molecular mechanism of asymmetric calcium-sensitive receptor activation
Calcium-sensing receptors (CaSRs), widely distributed in tissues and organs such as parathyroid glands, intestines, bones and kidneys, sense the concentration of calcium ions in the blood and maintain the calcium balance in the human body. CaSR is so.....»»
Did this chemical reaction create the building blocks of life on Earth?
How did life begin? How did chemical reactions on the early Earth create complex, self-replicating structures that developed into living things as we know them?.....»»
Apple"s ad-free presence on Amazon raises questions about digital advertising practices
Apple's Amazon product pages have a minimalistic, ad-free design due to a 2018 agreement, drawing mixed reactions from industry competitors and highlighting the complexities of digital ad negotiations.[Investopedia]In a recent lawsuit against Amazon,.....»»