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Hasler, M.* ; Patrian, M.* ; Banda-Vázquez, J.A.* ; Ferrara, S.* ; Stiel, A.-C. ; Fuenzalida-Werner, J.P.* ; Costa, R.D.*

Fully biogenic near-infrared phosphors: Phycobiliproteins and  cellulose at force toward highly efficient and stable bio-hybrid light-emitting diodes.

Adv. Func. Mat., DOI: 10.1002/adfm.202301820 (2023)
Publ. Version/Full Text DOI
Open Access Gold (Paid Option)
Creative Commons Lizenzvertrag
Stable/efficient low-energy emitters for photon down-conversion in bio-hybrid light-emitting diodes (Bio-HLEDs) are still challenging, as the archetypal fluorescent protein (FP) mCherry has led to the best deep-red Bio-HLEDs with poor stabilities: 3 h (on-chip)/160 h (remote). Capitalizing on the excellent refolding under temperature/pH/chemical stress, high brightness, and high compatibility with polysaccharides of phycobiliproteins (smURFP), first-class low-energy emitting Bio-HLEDs are achieved. They outperform those with mCherry regardless of using reference polyethylene oxide (on-chip: 24 h vs. 3 h) and new biopolymer hydroxypropyl cellulose (HPC; on-chip: 44 h vs. 3 h) coatings. Fine optimization of smURFP-HPC-coatings leads to stable record devices (on-chip: 2600 h/108 days) compared to champion devices with perylene diimides (on-chip: <700 h) and artificial FPs (on-chip: 35 h). Finally, spectroscopy/computational/thermal assays confirm that device degradation is related to the photo-induced reduction of biliverdin to bilirubin. Overall, this study pinpoints a new family of biogenic emitters toward superior protein-based lighting.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Bio-hybrid Light-emitting Diodes ; Near-infrared Bio-phosphors ; Photon Down-conversion ; Phycobiliproteins ; Protein-based Lighting; Hydroxypropyl Cellulose; Fluorescent Proteins; Dark States; Stability; Stabilization; Phycocyanin
ISSN (print) / ISBN 1616-301X
e-ISSN 1616-3028
Journal Advanced functional materials
Publisher Wiley
Publishing Place Weinheim
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Biological and Medical Imaging (IBMI)
Grants European Research Council (ERC)
Marie Curie Actions (MSCA)
ERC-Co InOutBioLight
European Union