Six-photon upconverted excitation energy lock-in for ultraviolet-C enhancement

Su, Q; Wei, H-L; Liu, Y; Chen, C; Guan, M; Wang, S; Su, Y; Wang, H; Chen, Z; Jin, D

Six-photon upconverted excitation energy lock-in for ultraviolet-C enhancement

Su, Q Wei, H-L Liu, Y Chen, C

Guan, M Wang, S Su, Y Wang, H Chen, Z Jin, D

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Publisher:: Nature Research
Publication Type:: Journal Article
Citation:: Nature Communications, 2021, 12, (1), pp. 1-9
Issue Date:: 2021-07-16

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Field	Value	Language
dc.contributor.author	Su, Q
dc.contributor.author	Wei, H-L
dc.contributor.author	Liu, Y
dc.contributor.author	Chen, C https://orcid.org/0000-0003-4620-7771
dc.contributor.author	Guan, M
dc.contributor.author	Wang, S
dc.contributor.author	Su, Y
dc.contributor.author	Wang, H
dc.contributor.author	Chen, Z
dc.contributor.author	Jin, D https://orcid.org/0000-0003-1046-2666
dc.date.accessioned	2022-02-09T04:31:25Z
dc.date.available	2021-06-21
dc.date.available	2022-02-09T04:31:25Z
dc.date.issued	2021-07-16
dc.identifier.citation	Nature Communications, 2021, 12, (1), pp. 1-9
dc.identifier.issn	2041-1723
dc.identifier.issn	2041-1723
dc.identifier.uri	http://hdl.handle.net/10453/154341
dc.description.abstract	Photon upconversion of near-infrared (NIR) irradiation into ultraviolet-C (UVC) emission offers many exciting opportunities for drug release in deep tissues, photodynamic therapy, solid-state lasing, energy storage, and photocatalysis. However, NIR-to-UVC upconversion remains a daunting challenge due to low quantum efficiency. Here, we report an unusual six-photon upconversion process in Gd3+/Tm3+-codoped nanoparticles following a heterogeneous core-multishell architecture. This design efficiently suppresses energy consumption induced by interior energy traps, maximizes cascade sensitizations of the NIR excitation, and promotes upconverted UVC emission from high-lying excited states. We realized the intense six-photon-upconverted UV emissions at 253 nm under 808 nm excitation. This work provides insight into mechanistic understanding of the upconversion process within the heterogeneous architecture, while offering exciting opportunities for developing nanoscale UVC emitters that can be remotely controlled through deep tissues upon NIR illumination.
dc.format	Electronic
dc.language	eng
dc.publisher	Nature Research
dc.relation.ispartof	Nature Communications
dc.relation.isbasedon	10.1038/s41467-021-24664-x
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.mesh	Benzofurans
dc.subject.mesh	Gadolinium
dc.subject.mesh	Infrared Rays
dc.subject.mesh	Lasers
dc.subject.mesh	Nanocomposites
dc.subject.mesh	Nanoparticles
dc.subject.mesh	Photons
dc.subject.mesh	Singlet Oxygen
dc.subject.mesh	Thulium
dc.subject.mesh	Ultraviolet Rays
dc.subject.mesh	Gadolinium
dc.subject.mesh	Thulium
dc.subject.mesh	Singlet Oxygen
dc.subject.mesh	Benzofurans
dc.subject.mesh	Lasers
dc.subject.mesh	Infrared Rays
dc.subject.mesh	Ultraviolet Rays
dc.subject.mesh	Photons
dc.subject.mesh	Nanoparticles
dc.subject.mesh	Nanocomposites
dc.title	Six-photon upconverted excitation energy lock-in for ultraviolet-C enhancement
dc.type	Journal Article
utslib.citation.volume	12
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-02-09T04:31:20Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	12
utslib.citation.issue	1

Abstract:

Photon upconversion of near-infrared (NIR) irradiation into ultraviolet-C (UVC) emission offers many exciting opportunities for drug release in deep tissues, photodynamic therapy, solid-state lasing, energy storage, and photocatalysis. However, NIR-to-UVC upconversion remains a daunting challenge due to low quantum efficiency. Here, we report an unusual six-photon upconversion process in Gd3+/Tm3+-codoped nanoparticles following a heterogeneous core-multishell architecture. This design efficiently suppresses energy consumption induced by interior energy traps, maximizes cascade sensitizations of the NIR excitation, and promotes upconverted UVC emission from high-lying excited states. We realized the intense six-photon-upconverted UV emissions at 253 nm under 808 nm excitation. This work provides insight into mechanistic understanding of the upconversion process within the heterogeneous architecture, while offering exciting opportunities for developing nanoscale UVC emitters that can be remotely controlled through deep tissues upon NIR illumination.

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http://hdl.handle.net/10453/154341