Heterogeneous catalyst reduces the cost of synthesis of cyclic polymers

Chemists from the USA, South Korea, Hungary and Switzerland have developed a heterogeneous ruthenium-based catalyst for the synthesis of cyclic polymers from cyclopentene. They also managed to come up with a reaction installation that makes it easy to separate the catalyst from the reaction products. The study was published in Nature Chemistry. Linear polymers containing… Continue reading Heterogeneous catalyst reduces the cost of synthesis of cyclic polymers

An organometallic cocatalyst helped produce ammonia by electrolysis

Chemists from the USA have found a cobalt-based cocatalyst, which, together with a tungsten-based catalyst, makes it possible to effectively produce ammonia from nitrogen under electrolysis conditions. Thanks to this combination of catalysts, the process was able to be carried out at a relatively high potential of −1.35 volts and with a current efficiency of… Continue reading An organometallic cocatalyst helped produce ammonia by electrolysis

Chemists have found a new way of prebiotic synthesis of amino acids

A possible route for prebiotic synthesis of amino acids was proposed by chemists from the USA. In a work published in Nature Chemistry, scientists argue that before the emergence of life, amino acids could be obtained from keto acids, and not just from aldehydes, as previously thought. Moreover, the process found is more reminiscent of… Continue reading Chemists have found a new way of prebiotic synthesis of amino acids

Chemists synthesized puffer fish venom in 22 steps

The nerve poison tetrodotoxin, contained in some species of the pufferfish family, was synthesized in 22 stages with a yield of 11 percent. The synthesis turned out to be one of the shortest in history thanks to a well-chosen cycloaddition reaction, scientists write in Science. Tetrodotoxin causes blockage of sodium channels, and poisoning with it… Continue reading Chemists synthesized puffer fish venom in 22 steps

Rosetta found naphthalene on comet Churyumov-Gerasimenko

Planetologists, while analyzing observational data from the Rosetta station for the coma of comet Churyumov-Gerasimenko, discovered more than 40 organic molecules in it, including previously undetected ones, such as naphthalene and nonane. This suggests that the process of transport of organic substances from the interstellar medium to small bodies is much more complex and larger-scale… Continue reading Rosetta found naphthalene on comet Churyumov-Gerasimenko

Physicists have populated a lattice in synthetic space with atoms

Physicists created a triangular lattice in synthetic space and populated it with atoms of a degenerate Fermi gas. To do this, they irradiated the gas with nine different beams, exciting states with different spin projections in the atoms and transferring a discrete impulse to them. Such structures will make it possible to study exotic topological… Continue reading Physicists have populated a lattice in synthetic space with atoms

Astronomers find isopropanol in the interstellar medium for the first time

Astronomers using the ALMA radio telescope for the first time discovered molecules of isopropanol and propanol-1 in the interstellar medium. They were found in the hot core of a large molecular cloud near the center of our galaxy. Article published in the magazine Astronomy&Astrophysics. To date, 267 different molecules have been discovered in space, including… Continue reading Astronomers find isopropanol in the interstellar medium for the first time

Chemists have proposed a method for the synthesis of enantiomerically pure catenanes and rotaxanes

Chemists from Great Britain proposed synthesizing enantiomers of catenanes and rotaxanes from chiral starting materials with bulky groups that hinder the rotation of isomeric products. Using this method, scientists obtained enantiomerically pure catenane and rotaxane. The study was published in Nature Chemistry. The chirality of a molecule is its property of not being compatible with… Continue reading Chemists have proposed a method for the synthesis of enantiomerically pure catenanes and rotaxanes

Chemists have obtained a topologically chiral molecular knot with 14 crosses

Chemists from China have synthesized two topologically chiral molecular knots – a trefoil knot with three crosses and the product of the interlocking of two trefoil knots with 14 crosses. Scientists were able to selectively obtain each of the optical isomers of both units thanks to optically active starting compounds. The study was published in… Continue reading Chemists have obtained a topologically chiral molecular knot with 14 crosses

Antioxidant from tomatoes extends the life of solar cells

Chinese scientists have stabilized perovskite solar cells with the antioxidant lycopene, which is found in tomatoes and grapefruits. Lycopene was originally added to block free radicals and protect perovskites from oxidation. However, lycopene was found to have another useful property – the ability to passivate traps and improve the crystallinity of perovskite. The results of… Continue reading Antioxidant from tomatoes extends the life of solar cells