64242 2025 eng lecture 0 -- -- -- Luminescent polymer microparticles (PMPs) are applied in various (bio)analytical and diagnostic processes.[1] The staining of these beads is important for the realization of optically distinguishable barcodes that can be read out, e.g., by a flow cytometer or fluorescence microscope. Typically, luminescent semiconductor nanoparticles (NPs) absorb in a broad wavelength range and show narrow emission bands, which enables simultaneous excitation of differently colored luminophores and facilitates a spectral discrimination.[1] This makes them ideal candidates for this purpose and encouraged us to explore and develop a simple, effective approach to luminescent semiconductor NP encoding of polystyrene PMPs and identify suitable synthesis conditions.[2] Until now, mainly semiconductor quantum dots (QDs) have been used for the synthesis of luminescent PMPs, although NPs with different shapes could introduce beneficial new features. Aiming for the application of our developed procedure to non-spherical NPs, we systematically investigated the luminescence properties of the resulting NP-stained beads using fluorescence and integrating sphere spectroscopy as well as fluorescence and electron microscopy. These studies showed that the suitability of semiconductor NPs for the synthesis of luminescent PMPs depends not only on their shape, but also heavily on their surface chemistry.[3] The successful incorporation of nonspherical NPs opens the path to include even more NPs, and the results can help to deduce future applications for the beads which best suit their specific properties. E-MRS Fall Meeting 2025 Warsaw, Poland 15.09.2025 0 publish false true Lena Scholtz eng uncontrolled Quality assurance eng uncontrolled Fluorescence eng uncontrolled Nano eng uncontrolled Particle eng uncontrolled Synthesis eng uncontrolled Quantum dot eng uncontrolled Quantum rod eng uncontrolled Platelet eng uncontrolled Quantum yield eng uncontrolled Polymer particle eng uncontrolled Encoding eng uncontrolled Surface chemistry eng uncontrolled Mechanism eng uncontrolled Characterization eng uncontrolled Lifetime eng uncontrolled Barcode eng uncontrolled Polymerization eng uncontrolled Method Analytische Chemie Ingenieurwissenschaften und zugeordnete Tätigkeiten 1 Analytische Chemie; Referenzmaterialien 1.2 Biophotonik Umwelt Material Chemie und Prozesstechnik Chemische Charakterisierung und Spurenanalytik Datei im Netzwerk der BAM verfügbar ("Closed Access") Präsentation Advanced Materials