64728 2025 eng lecture 0 -- -- -- Inorganic nanocrystals such as spectrally shifting lanthanide-based nanoparticles (LnNCs) like NaYF4: Yb, Er and semiconductor quantum dots, organic and inorganic particles stained with sensor molecules, and organic dyes showing aggregation-induced emission are meanwhile broadly applied in the life and material sciences. The identification of optimum particle architectures and molecular structures for photonic applications requires quantitative spectroscopic studies and methods to control and analyse particle surface chemistry. In the following, photoluminescence studies of different emitter classes are presented, thereby addressing the measurement of particle brightness and photoluminescence quantum yields in different spectral windows parameters required for an in-depth mechanistic understanding. In addition, examples for the quantification of surface functional groups on nanomaterials with optical spectroscopy are given. GdCH Kolloquium Düsseldorf, Germany 11.11.2025 1 publish false true Ute Resch-Genger eng uncontrolled Dye eng uncontrolled Fluorescence eng uncontrolled Quantum yield eng uncontrolled Lifetime eng uncontrolled Sensor materials eng uncontrolled Temperature eng uncontrolled Cr(III) complex eng uncontrolled Nano eng uncontrolled Particle eng uncontrolled Silica eng uncontrolled Polymer eng uncontrolled Metrology eng uncontrolled Quality assurance eng uncontrolled Reference material eng uncontrolled Surface chemistry eng uncontrolled Size eng uncontrolled Shape eng uncontrolled Particle number concentration eng uncontrolled Method eng uncontrolled Optical assay eng uncontrolled qNMR eng uncontrolled Validation eng uncontrolled Potentiometry eng uncontrolled XPS Analytische Chemie Ingenieurwissenschaften und zugeordnete Tätigkeiten 1 Analytische Chemie; Referenzmaterialien 1.2 Biophotonik Material Chemie und Prozesstechnik Chemische Charakterisierung und Spurenanalytik Datei im Netzwerk der BAM verfügbar ("Closed Access") Präsentation Advanced Materials