Photonic innovations have become an important part of our everyday lives: They are used in OLED display screens, laser systems and optical information transmission. Nevertheless, to pave the way for the next generation of smart applications– for example in high-resolution sensing units, quantum communication or drug and food testing– we require brand-new kinds of products that respond to a provided physical stimulus such as pressure or electric fields. “While chemically controlled luminescence, for instance the light emitted by a substance that is triggered by a modification in pH worth, has been studied and utilized for a long period of time, research into physically switchable light emissions is still in its infancy,” says Professor Andreas Steffen.
This is the starting point for the new Research study Unit called STIL-COCOs. The acronym means STImulus-responsive Luminescent COordination COmpounds. The researchers are taking a look at small, easy-to-handle particles that change their luminous residential or commercial properties when exposed to physical stimuli. Here, the focus is on coordination substances consisting of metals whose three-dimensional structure can be changed selectively. The interdisciplinary group will take a look at how pressure, shearing forces along with magnetic and electric fields influence the color, intensity or period of the light produced by the particles. The goal is to develop clear style strategies for their application in key photonic technologies.
Researchers from seven universities work together
“Only by closely dovetailing several disciplines and methods can we fully decipher the connection between the molecular structure and the photonic habits of innovative bright products,” states Teacher Steffen. Apart from TU Dortmund University, the researchers associated with the job come from the universities of Münster, Bonn, Frankfurt, Paderborn, Mainz and from RWTH Aachen University. Among them are professionals in theory, synthetic chemistry and spectroscopy. The job likewise has access to significant research organizations such as the DESY Research Center in Hamburg. The Research Unit’s co-spokesperson is Teacher Katja Heinze from Johannes Gutenberg University Mainz (JGU).
Along With Teacher Andreas Steffen’s working group, Teacher Sebastian Henke’s team at TU Dortmund University is also participating in the job. Its role is to examine what are called “responsive scaffold compounds”– permeable materials that change their structure when stimulated and can exhibit new luminescent impacts at the same time. At the Department of Chemistry and Chemical Biology, the teams have comprehensive facilities for synthesizing such products along with unique measuring devices at their disposal that allow them to study luminescence over a broad temperature range– from space temperature to conditions almost like in area (4 Kelvin or about -270 ° C). Unlike anywhere else across the country, in Dortmund the research study teams can also carry out these measurements under high-pressure conditions.
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