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Scientists enhance durability of lithium-sulfur batteries with dyes

A coating material based on methylene blue dye could ensure high performance of these batteries

10-Feb-2022

Many emerging technologies related to sustainable energy, such as grid-scale energy storage systems and electric cars, require high-performance rechargeable batteries. Unfortunately, conventional lithium-ion batteries (LIBs) have almost reached their theoretical limit, and need to be supplanted ...

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Harvard researchers use dyes to store data

Chemists’ dye method holds promise for long-term data storage — thousands of years or more: Start-up is pursuing opportunities for partnerships

15-Oct-2021

In the digital age, every byte of data needs to go somewhere — and preferably stay there a long time. That last part is a major problem when it comes to data-storage systems, which typically last less than 20 years. A group of Harvard chemists is trying to solve the issue with an innovation that ...

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Switched on IR-Active Organic Pigments

Organic mixed valence pigments absorb in the near infrared

12-Aug-2021

In photosynthesis and organic photovoltaics, pigment molecules convert light into electrical charge. A team of chemists have now produced an unusual organic pigment, which is “switched on” by an electrical charge to become a potent dye that absorbs light in the near-infrared range. The team's ...

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Molecules in collective ecstasy

Signal transmission through dyes: Chemical light amplifiers ten times more efficient than before

15-Jul-2021

When fluorescent dye molecules nestle perfectly together, something completely new is created: an excited state distributed over many molecules. Such collective excitations can be used in a variety of ways – for organic solar panels, in sensors, for ultrafast data transmission or in microscopy, ...

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Electric cars: Special dyes could prevent unnecessary motor replacements

20-May-2021

One day in the near future dyes in electric motors might indicate when cable insulation is becoming brittle and the motor needs replacing. Scientists at Martin Luther University Halle-Wittenberg (MLU), together with ELANTAS, a division of the specialty chemicals group ALTANA, have developed a new ...

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Luminous Molecules

Researchers develop complex dye molecules in three simple steps

12-Nov-2020

Many people know the effect from discos when “black light” makes clothes or writing boards glow. The reason for this are so-called fluorescent dyes. They send back part of the light they are exposed to in a slightly different way and thus glow. Particularly large fluorescent molecules are often ...

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A question of affinity

How to design organic solar cell materials

29-Oct-2020

A collaboration of scientists from the Max Planck Institute for Polymer Research (MPI-P) in Germany and the King Abdullah University of Science and Technology (KAUST) in Saudi Arabia have recently scrutinized organic solar cells and derived design rules for light-absorbing dyes that can help to ...

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Gold- and bronze-like paints that don't contain metal

Researchers have developed organic-only dyes that can form films resembling gold or bronze, without the need for metals

19-Oct-2020

Lustrous metallic paints are used to enhance the beauty of many products, such as home decorations, cars and artwork. But most of these pigments owe their sheen to flakes of aluminum, copper, zinc or other metals, which have drawbacks. Now, researchers reporting in ACS Omega have developed ...

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Dyes from atmospheric CO₂

Value creation by combining electrochemistry with biotechnology

21-Aug-2020

Time for climate protection is pressing. One approach to tackle this challenge is to use the greenhouse gas CO2 as a raw material for chemicals. To this end, the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, together with partners from science and industry, has pursued a ...

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Putting a nanomachine to work

30-Jan-2020

A team of chemists at LMU has successfully coupled the directed motion of a light-activated molecular motor to a different chemical unit – thus taking an important step toward the realization of synthetic nanomachines. Molecular motors are chemical compounds that convert energy into directed ...

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