Articles tagged with Isomerization
A team of researchers at The University of Osaka has found a novel method for creating diastereomers, which are structurally identical molecules with different biological activities. Their approach uses a group-14 allylatrane to control the reaction, resulting in the high-yield synthesis of complex molecules.
Researchers performed the first ab initio calculation of the hexacontatetrapole E6 transition in 53Fe, revealing unique high-multipole gamma decay mechanism using bare nucleon charges. The study successfully reproduces experimental excitation spectrum and provides reliable predictions for electromagnetic transitions.
A new recycling technology has been developed to turn used tires into raw materials for rubber and nylon, achieving high selectivity of up to 92% and a yield of 82%. The process uses dual catalysis to convert waste rubber into valuable chemicals.
A new study reveals that cooking sulfur-containing vegetables like garlic and onions can transform into harmful trans-fats when heated above 140°C. The study found that antioxidants can reduce the risk of trans-fat formation, but excessive caution is still necessary.
A novel computational technique using quantum chemical calculations analyzes carotenoid isomers quickly and accurately, reducing margin of error to 2% and boosting analysis speed by months.
Researchers discovered saclipins, a natural substance from the cyanobacterium Aphanothece sacrum, which enhance collagen production and support skin whitening. The study found that saclipins inhibit elastase, promote collagen and hyaluronic acid production, and suppress melanin production, indicating potential benefits for skincare.
A Japanese research team has developed a framework that accurately describes how first-order reactions appear depending on the time interval used to measure the reaction. The work uses a 'shutter speed' analogy to simplify complex molecular changes, allowing for precise predictions of reaction outcomes.
A team of scientists developed a technique to modify individual molecule units in a controlled manner, achieving structural isomerization and synthesizing reactive diradicals. This breakthrough enables the creation of novel carbon nanostructures with designer molecular units.
Scientists created a supramolecular machine that efficiently converts azobenzenes to their metastable conformation using visible light. The approach, inspired by the deep-sea fish vision system, overcomes limitations of traditional photoswitchable molecules.
Researchers discovered two novel compounds, saclipin A and B, with anti-aging and UV-absorbing properties in a freshwater cyanobacterium. The compounds were found to absorb UV radiation, scavenging damaging oxygen free radicals and inhibiting glycation of collagen and elastin.
Scientists have introduced a novel approach to change the shape of azobenzenes using visible light, enabling efficient and practical applications. The new supramolecular complex, called DESC, harnesses the power of red wavelengths to prompt molecular transformations.
Researchers at Princeton University have developed a method to generate less-stable olefins from internal olefins catalytically, utilizing photocatalysis and chromium co-catalysis. This innovation allows for the conversion of internal olefins into terminal olefins, which are useful starting points in various chemical processes.
Researchers from IOCB Prague synthesized regular 2D assemblies of isotopically labelled molecular switches, measuring their isomerization properties. The team found that formation of the assembly does not compromise the photochemical switching properties of the embedded molecules.
Researchers at Hebrew University of Jerusalem and Cornell University discovered that magic-size nanoclusters can change their internal structure in a single step, like molecules do during isomerization. This finding bridges the gap between small-scale molecular isomerization and large-scale phase transitions.
For the first time, MIT chemists have measured the energy of a transition state in a chemical reaction, a fleeting and unstable state thought to be impossible to experimentally characterize. By analyzing changes in vibrational energy levels, they were able to decipher the patterns of reactants approaching the transition state.
Researchers have demonstrated that chromophores do not need to change shape to trigger the visual signal, instead, an electronic coupling initiates the process. This discovery challenges the long-held assumption of isomerization as the first step in the visual signal initiation.
Scientists at Virginia Tech have developed a new class of inhibitors that target the Pin1 enzyme, which regulates cell division in cancer cells. The researchers found that one of the inhibitors was 23 times more effective than a similar compound, offering promise for treating various types of cancer including breast and prostate cancer.
Researchers at Purdue University have precisely determined the energies needed to twist a molecule called tryptamine, which is closely related to serotonin and melatonin. This breakthrough could provide new insights into protein folding and lead to new approaches to develop computer memory devices.