Helix Shape Power-Dependent Properties of Single Upconversion Nanoparticles.

Liao, J; Jin, D; Chen, C; Li, Y; Zhou, J

Helix Shape Power-Dependent Properties of Single Upconversion Nanoparticles.

Liao, J

Jin, D

Chen, C

Li, Y Zhou, J

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: The journal of physical chemistry letters, 2020, 11, (8), pp. 2883-2890
Issue Date:: 2020-04

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Field	Value	Language
dc.contributor.author	Liao, J https://orcid.org/0000-0003-0616-4762
dc.contributor.author	Jin, D https://orcid.org/0000-0003-1046-2666
dc.contributor.author	Chen, C https://orcid.org/0000-0003-4620-7771
dc.contributor.author	Li, Y
dc.contributor.author	Zhou, J https://orcid.org/0000-0002-0605-5745
dc.date.accessioned	2020-12-15T00:26:38Z
dc.date.available	2020-12-15T00:26:38Z
dc.date.issued	2020-04
dc.identifier.citation	The journal of physical chemistry letters, 2020, 11, (8), pp. 2883-2890
dc.identifier.issn	1948-7185
dc.identifier.issn	1948-7185
dc.identifier.uri	http://hdl.handle.net/10453/144691
dc.description.abstract	Nonblinking, nonbleaching, and superbright single upconversion nanoparticles have been recently discovered with nonlinear power-dependent properties and can be switchable under dual-beam excitations, which are ideal for super-resolution microscopy, single-molecule tracking, and digital assays. Here, we report that the brightness of Nd3+-Yb3+-Er3+-doped nanoparticles displays a pair of unusual double helix shapes as the function of power densities of 976 and 808 nm excitations. We systemically analyze the power-dependent emission spectra, lifetimes, and power-intensity double-log slopes of single upconversion nanoparticles, which reveal that the dynamic roles of Nd3+ ions in the tridoped nanosystem with underlining electron population pathways are power dependent. That is, at high power 808 nm excitation, Nd3+ ions can directly emit upconverted luminescence, with their conventional role of sensitization saturated in the Nd3 → Yb3+ → Er3+ energy transfer systems. Moreover, we confirm that the universal helix shape phenomena commonly exist in a set of eight batches of core-shell nanoparticles regardless of the doping concentrations of Nd3+, Yb3+, and Er3+ ions in the sensitization shell, migration shell, and active core, though the crossing nodes occur at different excitation power ranges. This study emphasizes the important role of power-dependent properties in both improving the upconversion emission efficiency and the design of nonlinear responsive probes for imaging and sensing.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	AMER CHEMICAL SOC
dc.relation	http://purl.org/au-research/grants/arc/DE180100669
dc.relation.ispartof	The journal of physical chemistry letters
dc.relation.isbasedon	10.1021/acs.jpclett.9b03838
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences
dc.subject.mesh	Microscopy, Confocal
dc.subject.mesh	Luminescent Measurements
dc.subject.mesh	Energy Transfer
dc.subject.mesh	Luminescence
dc.subject.mesh	Nanoparticles
dc.subject.mesh	Microscopy, Confocal
dc.subject.mesh	Luminescent Measurements
dc.subject.mesh	Energy Transfer
dc.subject.mesh	Luminescence
dc.subject.mesh	Nanoparticles
dc.subject.mesh	Energy Transfer
dc.subject.mesh	Luminescence
dc.subject.mesh	Luminescent Measurements
dc.subject.mesh	Microscopy, Confocal
dc.subject.mesh	Nanoparticles
dc.title	Helix Shape Power-Dependent Properties of Single Upconversion Nanoparticles.
dc.type	Journal Article
utslib.citation.volume	11
utslib.location.activity	United States
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-12-15T00:26:33Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	8

Abstract:

Nonblinking, nonbleaching, and superbright single upconversion nanoparticles have been recently discovered with nonlinear power-dependent properties and can be switchable under dual-beam excitations, which are ideal for super-resolution microscopy, single-molecule tracking, and digital assays. Here, we report that the brightness of Nd3+-Yb3+-Er3+-doped nanoparticles displays a pair of unusual double helix shapes as the function of power densities of 976 and 808 nm excitations. We systemically analyze the power-dependent emission spectra, lifetimes, and power-intensity double-log slopes of single upconversion nanoparticles, which reveal that the dynamic roles of Nd3+ ions in the tridoped nanosystem with underlining electron population pathways are power dependent. That is, at high power 808 nm excitation, Nd3+ ions can directly emit upconverted luminescence, with their conventional role of sensitization saturated in the Nd3 → Yb3+ → Er3+ energy transfer systems. Moreover, we confirm that the universal helix shape phenomena commonly exist in a set of eight batches of core-shell nanoparticles regardless of the doping concentrations of Nd3+, Yb3+, and Er3+ ions in the sensitization shell, migration shell, and active core, though the crossing nodes occur at different excitation power ranges. This study emphasizes the important role of power-dependent properties in both improving the upconversion emission efficiency and the design of nonlinear responsive probes for imaging and sensing.

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http://hdl.handle.net/10453/144691