ETH researchers create novel security inks - including red, which was previously difficult to produce

06-Jan-2023

ETH researchers have developed a modular system for the simple and inexpensive production of security inks. It is based on polymers and could also be used in solar power plants and screens in the future. Novel fluorescent dyes developed by ETH researchers are relatively simple and inexpensive to ...

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Organic dyes with persistent delayed fluorescence and ultralong phosphorescence

20-Dec-2022

A team of researchers from Lithuania has developed organic dyes showing a particularly long afterglow after being excited by light. Doping a polymer with newly synthesized diboraanthracene dyes resulted in an intense red or blue–green dual afterglow, which was composed of persistent thermally ...

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A new method drastically reduces the amount of solvent needed to produce widely used organic dyes

02-Sep-2022

Organic, i.e. carbon-containing dyes have important roles in nature. For example, they are responsible for transporting oxygen and other gases in the body (as part of haemoglobin) and converting solar energy into chemical energy in photosynthesis (chlorophyll). One class of artificial organic ...

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Ingredient lists often aren’t accurate

29-Aug-2022

From life-like faces to elaborate nature scenes, tattoos are a true art form. Although people have decorated their bodies for millennia for ceremonial and religious reasons, many people today adorn themselves with these images as a form of self-expression. But the inks used for tattoos are ...

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16-Aug-2022

North Carolina State University researchers have demonstrated that a synthetic polymer can remove certain dyes from water, and that the polymer can be recovered and reused. The findings offer a new potential method for cleaning wastewater after use by textiles, cosmetics or other ...

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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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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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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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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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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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