581 Current news about the topic spectroscopy

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Probing molecular orientation by polarization-selective transient absorption spectroscopy

07-Sep-2021

The organic solar cell (OSC) heterojunction interface is where key photophysical processes such as charge separation and recombination occur. The molecular orientation at the interface is one of the key factors that determine the efficiency of solar cells. Due to the complex three-dimensional ...

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Nano ‘camera’ made using molecular glue allows real-time monitoring of chemical reactions

“We were surprised how powerful this new tool is, considering how straightforward it is to assemble”

06-Sep-2021

Researchers have made a tiny camera, held together with ‘molecular glue’ that allows them to observe chemical reactions in real time. The device, made by a team from the University of Cambridge, combines tiny semiconductor nanocrystals called quantum dots and gold nanoparticles using molecular ...

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Overcoming False Optical Activity

Interference leads to inaccurate Raman spectroscopic analysis of vitamin B12

25-Aug-2021

Many natural products are complicated organic molecules. Despite this complexity, scientists are usually able to investigate them using spectroscopic techniques. However, a team of researchers has now discovered that care should be taken using Raman spectroscopy to analyze certain chiral ...

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Electrons Passed Around

Ultrafast charge transfer in Prussian blue analogues

23-Aug-2021

Photoinduced charge transfers are an interesting electronic property of Prussian blue and some analogously structured compounds. A team of researchers has now been able to elucidate the ultrafast processes in the light-induced charge transfer between iron and manganese in a manganese-containing ...

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Bacterial toxin blinds algae

Chemical “fingerprints” reveal the “murder weapon”

18-Aug-2021

University of Jena researchers have discovered a bacterial toxin that destroys the colour pigments in the eyespot of the single-cell green alga Chlamydomonas reinhardtii. Together with another toxic substance, the bacteria of the species Pseudomonas protegens not only disorientate and immobilise ...

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When vibrations increase on cooling: Anti-freezing observed

Completely unusual and never observed like this before

10-Aug-2021

An international team has observed an amazing phenomenon in a nickel oxide material during cooling: Instead of freezing, certain fluctuations actually increase as the temperature drops. Nickel oxide is a model system that is structurally similar to high-temperature superconductors. The experiment ...

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High-precision frequency measurement

03-Aug-2021

Many scientific experiments require highly precise time measurements with the help of a clearly defined frequency. Now, a new approach allows the direct comparison of frequency measurements in the lab with the atomic clock in Bern, Switzerland. For many scientific experiments, today’s researchers ...

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MaxDIA – taking proteomics to the next level

Highly sensitive and accurate data analysis: New software improves data-independent acquisition proteomics

12-Jul-2021

Proteomics produces enormous amounts of data, which can be very complex to analyze and interpret. The free software platform MaxQuant has proven to be invaluable for data analysis of shotgun proteomics over the past decade. Now, Jürgen Cox, group leader at the Max Planck Institute of ...

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Decoding electron dynamics

A new method for identifying quantum orbits enables photoelectron spectroscopy via tunneling ionization to provide attosecond temporal and subangstrom spatial resolution measurement of electron dynamics

05-Jul-2021

Electron motion in atoms and molecules is of fundamental importance to many physical, biological, and chemical processes. Exploring electron dynamics within atoms and molecules is essential for understanding and manipulating these phenomena. Pump-probe spectroscopy is the conventional technique. ...

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New high-speed method for spectroscopic measurements

23-Jun-2021

Researchers at Tampere University and their collaborators have shown how spectroscopic measurements can be made much faster. By correlating polarization to the colour of a pulsed laser, the team can track changes in the spectrum of the light by simple and extremely fast polarization measurements. ...

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