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Chromium Complex Emits Light in the Coveted NIR-II Range

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BASEL, Switzerland, Aug. 17, 2021 — A team of Swiss scientists has developed the first chromium complex that emits light in the NIR-II (1000 to 1700 nm) range. The scientists achieved an NIR-II luminescence of 1067 nm by strengthening the metal-ligand bond covalence in the complex. The approach weakened the mutual repulsion between d-electrons in the emissive excited state, lowering the energy enough to cause NIR-II luminescence to occur in the new trivalent chromium (CrIII) complex. In many complexes, both electrons in a covalent bond come from the ligand. Some of these metal-ligand bonds have a partially covalent...Read full article

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    Published: August 2021
    Glossary
    in vivo
    In vivo is a Latin term that translates to "within the living." In scientific contexts, particularly in biology and medicine, it refers to experiments or observations conducted within a living organism. In vivo studies involve the investigation of biological processes, responses to treatments, or the effects of interventions in intact organisms. This can include studies in animals such as mice, rats, rabbits, or non-human primates, as well as in humans. In vivo experiments allow...
    University of BaselResearch & TechnologyEuropelight propertiesbiomedical imagingin vivoin vivo applicationsNIR-IINIR lightNIR light sourcechromiumMaterialsbiochemicaleducationLight Sourcesspectroscopyphotophysics

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