Photonics of Hydrothermally Treated β‐Lactoglobulin Amyloids
Piotr Hanczyc,
Serena Rosa Alfarano,
Sreenath Bolisetty,
Jiangtao Zhou,
Mohammad Peydayesh,
Viviane Lutz‐Bueno,
Ana Diaz,
Shrestha Roy Goswami,
Maarten T. P. Beerepoot,
Mohammad Mehboob Alam,
Lei Wang,
Niclas Solin,
Iwona Szymanska,
Raffaele Mezzenga
Affiliations
Piotr Hanczyc
Faculty of Physics Institute of Experimental Physics University of Warsaw Pasteura 5 02‐093 Warsaw Poland
Serena Rosa Alfarano
Department of Health Sciences and Technology ETH Zurich 8092 Zurich Switzerland
Sreenath Bolisetty
Department of Health Sciences and Technology ETH Zurich 8092 Zurich Switzerland
Jiangtao Zhou
Department of Health Sciences and Technology ETH Zurich 8092 Zurich Switzerland
Mohammad Peydayesh
Department of Health Sciences and Technology ETH Zurich 8092 Zurich Switzerland
Viviane Lutz‐Bueno
Paul Scherrer Institut PSI 5232 Villigen Switzerland
Ana Diaz
Paul Scherrer Institut PSI 5232 Villigen Switzerland
Shrestha Roy Goswami
Department of Health Sciences and Technology ETH Zurich 8092 Zurich Switzerland
Maarten T. P. Beerepoot
Hylleraas Centre for Quantum Molecular Sciences Department of Chemistry UiT The Arctic University of Norway N‐9037 Tromsø Norway
Mohammad Mehboob Alam
Hylleraas Centre for Quantum Molecular Sciences Department of Chemistry UiT The Arctic University of Norway N‐9037 Tromsø Norway
Lei Wang
Department of Physics, Chemistry, and Biology, Electronic and Photonic Materials, Biomolecular and Organic Electronics Linköping University 581 83 Linköping Sweden
Niclas Solin
Department of Physics, Chemistry, and Biology, Electronic and Photonic Materials, Biomolecular and Organic Electronics Linköping University 581 83 Linköping Sweden
Iwona Szymanska
Department of Food Technology and Assessment Institute of Food Sciences Warsaw University of Life Sciences (WULS‐SGGW) 159C Nowoursynowska St. 02‐776 Warsaw Poland
Raffaele Mezzenga
Department of Health Sciences and Technology ETH Zurich 8092 Zurich Switzerland
Increased temperature and high pressure are applied to β‐lactoglobulin fibrils in the autoclave, resulting in the acquisition of a composite material comprised of partially disassembled amyloid fibrils and carbon dots. Confirmation of the preservation of the β‐sheet motif attributed to amyloids in the hydrothermally treated fibrils is obtained through wide‐angle X‐ray scattering and ThT assay. Z‐scan analysis reveals a two‐photon absorption (2PA) enhancement in the low‐lying transition band (La) of tyrosine, while quantum chemical calculations demonstrate a correlation between the yield of 2PA and the interspace distance between aromatic residues. Overall, the intrinsic optical properties of amyloid fibrils treated in a subcritical water environment are found to be linked with the π‐conjugation of tyrosine units and their through‐space coupling. The resulting composite material is employed as a coating for a commercial ultraviolet light‐emitting diode lamp, showcasing the potential utility of sustainable biomaterials with improved optical properties for photonics applications.
