Brightening heavily doped upconversion nanoparticles by tuning characteristics of core-shell structures

Niu, Yangyang; Bao, Zhihao; Gao, Yuqin; Guo, Mingxiao; Liu, Jingyao; Shao, Jinjun; Lü, Min; Yuan, Ze; Xie, Xiaoji

doi:10.1016/j.jre.2023.02.022

Cited by 5 publications

(4 citation statements)

References 47 publications

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“…The primary benefit brought about by the triplet energy transfer between organic dyes and LnLNPs is the mitigation of deficiencies associated with organic dyes and LnLNPs, especially LnLNPs. Taking LnLNPs with photon upconversion features, known as upconversion nanoparticles, as an example, upconversion nanoparticles can convert two or more low-energy photons to high-energy photons, giving upconverted luminescence and showing great promise in diverse fields. ,,,− , However, upconversion nanoparticles suffer from unsatisfactory luminescence intensity and efficiency due to the narrow and weak absorption of lanthanide ions. ,− In contrast, organic dyes possess strong and broad absorption and thus can function as sensitizers to help upconversion nanoparticles overcome intrinsic constraints. With the help of triplet energy transfer from organic dyes to LnLNPs, the luminescence of the upconversion nanoparticles can be dramatically improved.…”

Section: Recent Research Directions Of the Triplet Energy Transfermentioning

confidence: 99%

“…Triplet energy transfer between organic dyes and lanthanide-doped luminescent nanoparticles (LnLNPs) is a unique occurrence as compared to triplet energy transfer between organic dyes and other inorganic nanomaterials. , Specifically, triplet energy transfer between organic dyes and LnLNPs is appealing to biological applications due to the good stability and low toxicity of LnLNPs. − Moreover, this type of triplet energy transfer can be triggered by penetrative near-infrared (NIR) light, lowering the background noise and radiation damage to biospecies during bioapplications. ,,, Importantly, the organic dye-LnLNP triplet energy transfer can counteract limitations associated with both organic dyes and LnLNPs. For instance, dyes’ triplet energy can sensitize LnLNPs to overcome the intrinsic weak light absorption of LnLNPs, combating the unideal brightness of LnLNPs. ,,,− Meanwhile, LnLNPs are capable of directly activating dark triplet states of organic dyes, bypassing high-lying excited singlet states and energy-wasting intersystem crossing . To date, some progress in the triplet energy transfer between organic dyes and LnLNPs has been made. ,,, …”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Triplet Energy Transfer between Organic Dyes and Lanthanide-Doped Luminescent Nanoparticles

Yuan,

Chen,

Deng

et al. 2024

ACS Appl. Opt. Mater.

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Triplet energy transfer between organic dyes and lanthanide-doped luminescent nanoparticles (LnLNPs) energetically bridges organic dyes and inorganic LnLNPs, which can combine superiority and overcome limitations associated with the optical properties of organic dyes and LnLNPs. As a result, the triplet energy transfer can enable the unprecedented performance of organic dyes and LnLNPs in the harvest and conversion of photonic energy. In this review, we first introduce some fundamentals of triplet energy transfer. Probing methods and manipulation strategies for triplet energy transfer between organic dyes and LnLNPs are then surveyed, and recent research directions and corresponding achievements are reviewed. Finally, some challenges and perspectives for pursuing robust, flexible, and efficient triplet energy transfer between organic dyes and LnLNPs are discussed.

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Section: Recent Research Directions Of the Triplet Energy Transfermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in Triplet Energy Transfer between Organic Dyes and Lanthanide-Doped Luminescent Nanoparticles

Yuan,

Chen,

Deng

et al. 2024

ACS Appl. Opt. Mater.

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“…Lanthanide-doped upconversion nanoparticles (UCNPs) [7,[24][25][26][27] have garnered significant attention for multiplexed imaging at the nanoscale, owing to their strong anti-Stokes emission and unique nonlinear optical response. [16,28,29] The optical nonlinearity of UCNPs has been exploited to achieve super-resolution imaging.…”

Section: Introductionmentioning

confidence: 99%

Optical Nonlinearity Enabled Super‐Resolved Multiplexing Microscopy

Ding,

Chen,

Shan

et al. 2023

Advanced Materials

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Optical multiplexing for nanoscale object recognition is of great significance within the intricate domains of biology, medicine, anti‐counterfeiting and microscopic imaging. Traditionally, the multiplexing dimensions of nanoscopy are limited to emission intensity, colour, lifetime, and polarization. Here we propose a novel dimension, optical nonlinearity, for super‐resolved multiplexing microscopy. This optical nonlinearity is attributable to the energy transitions between multiple energy levels of the doped lanthanide ions in upconversion nanoparticles (UCNPs), resulting in unique optical fingerprints for UCNPs with different compositions. We apply a vortex beam to transport the optical nonlinearity onto the imaging point spread function (PSF), creating a robust super‐resolved multiplexing imaging strategy for differentiating UCNPs with distinctive optical nonlinearities. The composition information of the nanoparticles can be retrieved with variations of the corresponding PSF in the obtained image. We demonstrate four channels multiplexed super‐resolved imaging with a single scanning, applying emission colour and nonlinearity of two orthogonal imaging dimensions with a spatial resolution higher than 150 nm (1/6.5 λ). Our work provides a new and orthogonal dimension – optical nonlinearity – to existing multiplexing dimensions, which shows great potential in bioimaging, anti‐counterfeiting, microarray assays, deep tissue multiplexing detection, and high‐density data storage.This article is protected by copyright. All rights reserved

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“…The core/shell size is approximately 43/22 nm, and the diagonal and longitudinal lengths are around 65 and 50 nm, as shown in Figure S2 (SI). The shell is thicker than the traditional surface passivation range for optimizing the enhancement of energy upconversion. , Finally, the single UCNPs are filled in the nanohole using an assembly method . Once a drop of highly diluted UCNP-cyclohexane solution is deposited on the surface of NHA, it is squeezed using a flexible polymer film at an angle of 15–20°.…”

mentioning

confidence: 99%

Large-Area Near-Infrared Emission Enhancement on Single Upconversion Nanoparticles by Metal Nanohole Array

Li,

Wang,

Shi

et al. 2024

Nano Lett.

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Single lanthanide (Ln) ion doped upconversion nanoparticles (UCNPs) exhibit great potential for biomolecule sensing and counting. Plasmonic structures can improve the emission efficiency of single UCNPs by modulating the energy transferring process. Yet, achieving robust and large-area single UCNP emission modulation remains a challenge, which obstructs investigation and application of single UCNPs. Here, we present a strategy using metal nanohole arrays (NHAs) to achieve energytransfer modulation on single UCNPs simultaneously within largearea plasmonic structures. By coupling surface plasmon polaritons (SPPs) with higher-intermediate state ( 1 D 2 → 3 F 3 , 1 D 2 → 3 H 4 ) transitions, we achieved a remarkable up to 10-fold enhancement in 800 nm emission, surpassing the conventional approach of coupling SPPs with an intermediate ground state ( 3 H 4 → 3 H 6 ). We numerically simulate the electrical field distribution and reveal that luminescent enhancement is robust and insensitive to the exact location of particles. It is anticipated that the strategy provides a platform for widely exploring applications in single-particle quantitative biosensing.

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Brightening heavily doped upconversion nanoparticles by tuning characteristics of core-shell structures

Cited by 5 publications

References 47 publications

Recent Advances in Triplet Energy Transfer between Organic Dyes and Lanthanide-Doped Luminescent Nanoparticles

Recent Advances in Triplet Energy Transfer between Organic Dyes and Lanthanide-Doped Luminescent Nanoparticles

Optical Nonlinearity Enabled Super‐Resolved Multiplexing Microscopy

Large-Area Near-Infrared Emission Enhancement on Single Upconversion Nanoparticles by Metal Nanohole Array

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