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19 Current news about the topic fluorescence

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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 ...

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A super resolution view of chemical reactions

14-Feb-2018

Researchers from the Institute of Physical Chemistry of the Polish Academy of Sciences have demonstrated, using a super resolution microscopic technique, how to follow chemical reactions taking place in very small volumes. The method of analysis developed by the Warsaw physicists in collaboration ...

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Water-Soluble Warped Nanographene

Synthesis of a water-soluble warped nanographene and its application for photo-induced cell death

13-Feb-2018

Graphene and its nano-sized little sibling, nanographene, are well known for their remarkable photoelectronic properties. However, biomedical applications are hampered by the insolubility of the materials, especially in water. A Japanese team of scientists has now introduced substituted “warped ...

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Clever use of mirrors boosts performance of light-sheet microscope

21-Nov-2017

Using a simple "mirror trick" and not-so-simple computational analysis, scientists affiliated with the Marine Biological Laboratory (MBL) have considerably improved the speed, efficiency, and resolution of a light-sheet microscope, with broad applications for enhanced imaging of live cells and ...

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New dyes detect disease through heartbeat signals

18-Sep-2017

Vibrant tones of yellow, orange, and red move in waves across the screen. Although the display looks like psychedelic art, it's actually providing highly technical medical information -- the electrical activity of a beating heart stained with voltage-sensitive dyes to test for injury or ...

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New, more sensitive sensor for evaluating drug safety

08-Aug-2017

A new technique for evaluating drug safety can detect stress on cells at earlier stages than conventional methods, which mostly rely on detecting cell death. The new method uses a fluorescent sensor that is turned on in a cell when misfolded proteins begin to aggregate -- an early sign of ...

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Investigating folding stability and dynamics of proteins

07-Jul-2017

Hydrogels are polymer materials that can absorb a large amount of water, making them flexible like human tissue. They are used in a number of medical applications, including contact lenses, wound dressings, and facial reconstruction. Hydrogels also can be used in drug delivery, for example, as ...

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When gold turns invisible

Application in bioimaging and security inks possible

02-Jun-2017

A gold compound shifts from a visible fluorescence to emitting infrared when ground - a big shift with potential applications in bioimaging and security inks. Some materials luminesce, changing their color and intensity when under mechanical forces such as grinding or rubbing. These luminescent ...

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Fluorescence method detects mercury contamination in fish

24-Feb-2017

Researchers from the University of Burgos (Spain) have developed a fluorescent polymer that lights up in contact with mercury that may be present in fish. High levels of the metal were detected in samples of swordfish and tuna. According to the conclusions of another Spanish study, mercury ...

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In-mouse catalysis

Organ-targeted metal-complex catalysis within living biological systems

21-Feb-2017

Address and deliver: A gold catalyst can be delivered to a target organ in a higher organism where it performs a chemical transformation visualized by bioimaging. This intriguing approach has been introduced by a Japanese team of scientists. It could make organometallic catalysis applicable for ...

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