chemistry
Washington (AFP) - This year's Nobel Chemistry winners are pioneers in the nanoworld. During the 1980s, Alexi Ekimov, 78, and Louis Brus, 80, working independently and on opposite sides of the Iron Curtain, succeeding in creating "quantum dots" -- nanoparticles that are found today in next generation TV screens and are being used to illuminate tumors in the body. A decade later, 62-year-old Moungi Bawendi revolutionized methods to manufacture them with precision and at scale, paving the way for their applications. Here's the rundown on the 2023 Nobel Prize in Chemistry winners. PerseveranceBa...
AFP
Washington (AFP) - Talk about bouncing back. MIT professor Moungi Bawendi is a co-winner of this year's Nobel chemistry prize for helping develop "quantum dots" -- nanoparticles that are now found in next generation TV screens and help illuminate tumors within the body. But as an undergraduate, he flunked his very first chemistry exam, recalling that the experience nearly "destroyed" him. The 62-year-old of Tunisian and French heritage excelled at science throughout high school, without ever having to break a sweat. But when he arrived at Harvard University as an undergraduate in the late 197...
AFP
Stockholm (AFP) - A trio of US-based researchers on Wednesday won the Nobel Chemistry Prize for developing tiny "quantum dots" used to illuminate TVs and lamps, hours after a prematurely released statement revealed their names. French-born Moungi Bawendi, Louis Brus of the United States and Russian-born Alexei Ekimov were named as the three winners. They brought advances on tiny particles that "now spread their light from televisions and LED lamps, and can also guide surgeons when they remove tumour tissue", the jury said. But a rare leak led to the winners' names being mistakenly sent to medi...
AFP
Stockholm (AFP) - A trio of scientists from the United States and Denmark won the Nobel Chemistry Prize on Wednesday for laying the foundation for a more functional form of chemistry where molecules are linked together. Americans Carolyn Bertozzi and Barry Sharpless, together with Denmark's Morten Meldal, were honoured "for the development of click chemistry and bioorthogonal chemistry", the jury said. Bertozzi is the only woman among the seven Nobel laureates honoured so far this year, with women vastly under-represented in the history of the prizes, especially in the science disciplines. The...
AFP
Washington (AFP) - "Forever chemicals" used in daily items like nonstick pans have long been linked to serious health issues –- a result of their toxicity and extreme resistance to being broken down as waste products. Chemists in the United States and China on Thursday said they had finally found a breakthrough method to degrade these polluting compounds, referred to as PFAS, using relatively low temperatures and common reagents. Their results were published in the journal Science, potentially offering a solution to a longstanding source of harm to the environment, livestock and humans. "It re...
AFP
Washington (AFP) - Extracts of okra and other slimy plants commonly used in cooking can help remove dangerous microplastics from wastewater, scientists said Tuesday. The new research was presented at the spring meeting of the American Chemical Society, and offers an alternative to the synthetic chemicals currently used in treatment plants that can themselves pose risks to health. "In order to go ahead and remove microplastic or any other type of materials, we should be using natural materials which are non-toxic," lead investigator Rajani Srinivasan, of Tarleton State University, said in an ex...
AFP
Washington (AFP) - Princeton professor David MacMillan on Wednesday won the Nobel Chemistry Prize for his work developing a new tool to scale up chemical reactions in an environmentally friendly way, known as "organocatalysis." Here is a lightly edited interview that the Scotsman, who holds British and American citizenships, gave to AFP after the announcement. Organic moleculesQ: Why is organocatalysis so different and important compared to the catalysts that came before, such as metals and enzymes? A: Chemical reactions make all the things that are around us: medicine, materials, etc. And th...
AFP
Stockholm (AFP) - Emmanuelle Charpentier of France and Jennifer Doudna of the US on Wednesday won the Nobel Chemistry Prize for the gene-editing technique known as the CRISPR-Cas9 DNA snipping "scissors", the first time a Nobel science prize has gone to a women-only team.Using the tool, "researchers can change the DNA of animals, plants and microorganisms with extremely high precision," the Nobel jury said."This technology has had a revolutionary impact on the life sciences, is contributing to new cancer therapies and may make the dream of curing inherited diseases come true."The technique has...
AFP
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