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At Last: Separated and Freshly Bound

Amidation of light alkanes

21-Jul-2021

The carbon–hydrogen bonds in alkanes—particularly those at the ends of the molecules, where each carbon has three hydrogen atoms bound to it—are very hard to “crack” if you want to replace the hydrogen atoms with other atoms. Methane (CH4) and ethane (CH3CH3) are made up, exclusively, of such ...

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Making the invisible visible

New method for studying atomic structures in material surfaces

21-May-2021

Researchers from Friedrich Schiller University Jena, the University of California Berkeley and the Institut Polytechnique de Paris use intense laser light in the extreme ultraviolet spectrum to generate a non-linear optical process on a laboratory scale – a process which until now has only been ...

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As hard as a diamond and as deformable as metal

Scientists develop new material for tomorrow's technology

15-Jan-2021

Smartphones with large glass housings and displays are impressive, but they are also very prone to get cracked and scratched. To prevent these kinds of damages, a material combining the hardness of diamond and the deformability of metals would be ideal – and is indeed considered the holy grail of ...

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Upcycling: new catalytic process turns plastic bags into adhesives

Converting polyethylene packaging into high-value products incentivizes plastics recycling

22-Dec-2020

While many cities and eight states have banned single-use plastics, bags and other polyethylene packaging still clog landfills and pollute rivers and oceans. One major problem with recycling polyethylene, which makes up one-third of all plastic production worldwide, is economic: Recycled bags end ...

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Programmable synthetic materials

In the future, MOFs could form the basis of programmable chemical molecules

10-Aug-2020

In DNA, information is stored in the sequence of chemical building blocks; in computers, information consists of sequences of zeros and ones. Researchers want to transfer this concept to artificial molecules. Artificial molecules could one day form the information unit of a new type of computer ...

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Scientists finally crack nature's most common chemical bond

Holy grail of synthesis: Carbon-hydrogen bonds in hydrocarbon molecules have resisted functionalization until now

25-May-2020

The most common chemical bond in the living world -- that between carbon and hydrogen -- has long resisted attempts by chemists to crack it open, thwarting efforts to add new bells and whistles to old carbon-based molecules. Now, after nearly 25 years of work by chemists at the University of ...

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What happens when you explode a chemical bond?

Attosecond laser technique yields movies of chemical bond dissociation

15-Jul-2019

On bright summer days, the sunlight all around us is breaking bad by breaking bonds. Chemical bonds. Ultraviolet light shatters the links between atoms in the DNA of our skin cells, potentially causing cancer. UV light also breaks oxygen bonds, eventually creating ozone, and cleaves hydrogen off ...

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This bacterium gets paid in gold

Harvesting solar fuels through a bacterium's unusual appetite for gold

11-Oct-2018

A bacterium named Moorella thermoacetica won't work for free. But UC Berkeley researchers have figured out it has an appetite for gold. And in exchange for this special treat, the bacterium has revealed a more efficient path to producing solar fuels through artificial photosynthesis. M. ...

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Tying down electrons with nanoribbons

'Topological' graphene nanoribbons trap electrons for new quantum materials

10-Aug-2018

Scientists are experimenting with narrow strips of graphene, called nanoribbons, in hopes of making cool new electronic devices, but University of California, Berkeley scientists have discovered another possible role for them: as nanoscale electron traps with potential applications in quantum ...

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Thin film converts heat from electronics into energy

19-Apr-2018

Nearly 70 percent of the energy produced in the United States each year is wasted as heat. Much of that heat is less than 100 degrees Celsius and emanates from things like computers, cars or large industrial processes. Engineers at the University of California, Berkeley, have developed a ...

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