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We present a design for programmable luminescent tags fully made from biodegradable, ready-to-use materials (bioPLTs) allowing for waste-free information storage. Quinine embedded in polylactic acid as host material provides sufficient room temperature phosphorescence (RTP) for easy readout even under continuous-wave illumination. Exceval is used as oxygen blocking layer to locally control the oxygen-sensitive RTP emission for high-resolution writing of information. Accordingly, these bioPLTs exhibit all function-defining characteristics also found in their regular non-biodegradable analogs even including a flexible design when using polylactic acid foils as substrate.
Sebastian Schellhammer,Heidi Thomas,Tim Achenbach,Sebastian Kaiser, andSebastian Reineke
"Recent developments on programmable luminescent tags: biodegradable minimalistic information storage", Proc. SPIE PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV, PC130130C (19 June 2024); https://doi.org/10.1117/12.3016293
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Sebastian Schellhammer, Heidi Thomas, Tim Achenbach, Sebastian Kaiser, Sebastian Reineke, "Recent developments on programmable luminescent tags: biodegradable minimalistic information storage," Proc. SPIE PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV, PC130130C (19 June 2024); https://doi.org/10.1117/12.3016293