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31 Current news about the topic fluorescent dyes
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Entire colour palette of inexpensive fluorescent dyes
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 ...
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 ...
Inverted Fluorescence
Discovery of chromophores that emit light in the ultraviolet region when excited with visible light
23-Dec-2020
Fluorescence usually entails the conversion of light at shorter wavelengths to light at longer wavelengths. Scientists have now discovered a chromophore system that goes the other way around. When excited by visible light, the fluorescent dyes emit light in the ultraviolet region. According to ...
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 ...
Smart Fluorescent Dyes
Modulating photo- and electroluminescence in a stimuli-responsive molecular dye
17-Aug-2018
Controlling the excited electronic states in luminescent systems remains a challenge in the development of fluorescent and phosphorescent dyes. Now, scientists in Japan have developed a unique organic fluorophore that changes its emission color without loss of efficiency when externally ...
Fluorescence dyes from the pressure cooker
01-Feb-2017
The laboratory of Dr. Miriam M. Unterlass at the Institute of Materials Chemistry at TU Wien has just reported the synthesis of more than 20 different perylene bisimide dyes. This is not impressive per se. The way they prepare these compounds is though: Conventionally, perylene bisimides are ...
Shining a light on damage within polymers
19-Aug-2016
When it comes to even the most advanced materials, the adage "if it does not bend, it breaks" is often true. But before that final snap, most materials experience microscopic damage that could be fixed -- but only if you know it's there. In a study researchers introduce a new technique that ...
Ultrasensitive sensor using N-doped graphene
26-Jul-2016
A highly sensitive chemical sensor based on Raman spectroscopy and using nitrogen-doped graphene as a substrate was developed by an international team of researchers working at Penn State. In this case, doping refers to introducing nitrogen atoms into the carbon structure of graphene. This ...
New fluorescent nanomaterials whose inspiration was taken from plant antenna systems
28-Jan-2016
These new multifunctional materials aim to imitate the photosynthetic organisms of plants. These microorganisms consist of thousands of chlorophyll molecules embedded in a protein matrix, which provides them with a specific orientation/arrangement and intermolecular distance. One of the main ...
World's first fluorescent sensor to detect date rape drug
01-Apr-2014
A team of researchers from the National University of Singapore (NUS) has developed the world's first fluorescent sensor to identify the presence of a drug known as GHB that is commonly used to spike beverages. When the sensor is mixed with a sample of a beverage containing GHB, the mixture ...
