2022 Nobel Prize in Chemistry

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An interesting article:


...Click chemistry revolutionized the options available to chemists for creating the molecules they desired. Bioorthogonal chemistry made it possible to monitor the chemical processes going on inside living cells without harming them...

...“It’s all about snapping molecules together,” said Johan Åqvist, chair of the Nobel Committee for Chemistry, during the announcement. Imagine, he told the audience, that you could attach small chemical buckles to a bunch of different types of molecular building blocks and then link these buckles together to produce complex molecules. That idea, put forth by Barry Sharpless of the Scripps Research Institute about 20 years ago, later became reality when he and Morten Meldal of the University of Copenhagen independently found the first perfect candidates for the job. Their buckles easily snapped together and wouldn’t link onto anything they shouldn’t...

...Then, in 2003, Carolyn Bertozzi proposed that click chemistry could be used in studies of biological systems to make it easier to observe vital cellular processes without interfering with them. Bertozzi called this “bioorthogonal” chemistry in a paper she and her colleagues published that year...

....The ability to perform complex reactions in living systems without interfering with natural biological reactions made it possible to study molecules and cellular processes in cells and inside complex organisms such as zebra fish, rather than in laboratory dishes. It has already helped scientists understand an important protein processing reaction called glycosylation, helped to develop molecular imaging molecules that could detect disease in living organisms, and opened up the possibility of selectively delivering drugs to particular tissues in the body...
 

...The physicists Alain Aspect, John Clauser and Anton Zeilinger have won the 2022 Nobel Prize in Physics for experiments that proved the profoundly strange quantum nature of reality. Their experiments collectively established the existence of a bizarre quantum phenomenon known as entanglement, where two widely separated particles appear to share information despite having no conceivable way of communicating...

...Entanglement lay at the heart of a fiery clash in the 1930s between physics titans Albert Einstein on the one hand and Niels Bohr and Erwin Schrödinger on the other about how the universe operates at a fundamental level. Einstein believed all aspects of reality should have a concrete and fully knowable existence. All objects — from the moon to a photon of light — should have precisely defined properties that can be discovered through measurement. Bohr, Schrödinger and other proponents of the nascent quantum mechanics, however, were finding that reality appeared to be fundamentally uncertain; a particle does not possess certain properties until the moment of measurement...

....most researchers take the work of Bell, Clauser, Aspect, Zeilinger and their teams at face value. Entanglement is what it seems: The pair of particles is one unified system. For each individual particle, properties like spin and polarization really are undefined until the moment of measurement. In other words, reality has no fixed and predetermined state until you measure it. It’s a dramatic conclusion that most researchers accept but still struggle to fully grasp.

“The very fundamental question — what does this really mean in a basic way? — is unanswered, and is an avenue for new research,” said Zeilinger...
 
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