Rare-Earth Doping in Nanostructured Inorganic Materials

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(6), P. 5519 - 5603

Published: Jan. 6, 2022

Impurity doping is a promising method to impart new properties various materials. Due their unique optical, magnetic, and electrical properties, rare-earth ions have been extensively explored as active dopants in inorganic crystal lattices since the 18th century. Rare-earth can alter crystallographic phase, morphology, size, leading tunable optical responses of doped nanomaterials. Moreover, control ultimate electronic catalytic performance nanomaterials scalable manner, enabling significant improvements energy harvesting conversion. A better understanding critical role prerequisite for development an extensive repertoire functional practical applications. In this review, we highlight recent advances associated applications many fields. This review covers key criteria doping, including basic structures, lattice environments, strategies, well fundamental design principles that enhance electrical, catalytic, magnetic material. We also discuss future research directions challenges controlling

Language: Английский

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Optical Nanomaterials and Enabling Technologies for High‐Security‐Level Anticounterfeiting

Advanced Materials, Journal Year: 2019, Volume and Issue: 32(18)

Published: June 24, 2019

Abstract Optical nanomaterials have been widely used in anticounterfeiting applications. There significant developments powered by recent advances material science, printing technologies, and the availability of smartphone‐based decoding technology. Recent progress this field is surveyed, including optical reflection, absorption, scattering, luminescent nanoparticles. It demonstrated that design synthesis lanthanide‐doped upconversion nanoparticles will lead to next generation technologies. Their tunable properties responses a range external stimuli allow high‐security level information encoding. Challenges scale‐up nanomaterials, engineering assessorial devices for smart‐phone‐based decryption, alignment potential markets which new directions research, are discussed.

Language: Английский

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Photoluminescent and Chromic Nanomaterials for Anticounterfeiting Technologies: Recent Advances and Future Challenges

ACS Nano, Journal Year: 2020, Volume and Issue: 14(11), P. 14417 - 14492

Published: Oct. 20, 2020

Counterfeiting and inverse engineering of security confidential documents, such as banknotes, passports, national cards, certificates, valuable products, has significantly been increased, which is a major challenge for governments, companies, customers. From recent global reports published in 2017, the counterfeiting market was evaluated to be $107.26 billion 2016 forecasted reach $206.57 by 2021 at compound annual growth rate 14.0%. Development anticounterfeiting authentication technologies with multilevel securities powerful solution overcome this challenge. Stimuli-chromic (photochromic, hydrochromic, thermochromic) photoluminescent (fluorescent phosphorescent) compounds are most significant applicable materials development complex inks high-security level fast authentication. Highly efficient have developed high efficiency. Applicable applications generally based on photochromic compounds, hydrochromic thermochromic extensively used decades. A wide range materials, organic inorganic metal complexes, polymer nanoparticles, quantum dots, carbon upconverting supramolecular structures, could display all these phenomena depending their physical chemical characteristics. The polymeric recently received attention because stability printing documents. In addition, including hand-writing, stamping, inkjet printing, screen labels discussed introduction methods application different inks. This review would help scientists design develop encryption, authentication, security, detection, potential marking information encryption various substrates.

Language: Английский

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Mesoporous silica nanoparticles for therapeutic/diagnostic applications

Biomedicine & Pharmacotherapy, Journal Year: 2018, Volume and Issue: 109, P. 1100 - 1111

Published: Nov. 6, 2018

Based on unique intrinsic properties of mesoporous silica nanoparticles (MSNs) such as high surface area, large pore size, good biocompatibility and biodegradability, stable aqueous dispersion, they have received much attention in the recent decades for their applications a promising platform biomedicine field. These porous structures possess size ranging from 2 to 50 nm which make them excellent candidates various biomedical applications. Herein, at first we described common approaches cargo loading release processes MSNs. Then, intracellular uptake, safety cytotoxicity aspects MSNs are discussed well. This review also highlights most advances MSNs, including 1) MSNs-based carriers, 2) bioimaging agents, 3) biosensors, 4) therapeutic agents (photodynamic therapy), 5) MSN based quantum dots, 6) platforms upconverting nanoparticles, tissue engineering.

Language: Английский

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Recent Advances in Hyperthermia Therapy‐Based Synergistic Immunotherapy

Advanced Materials, Journal Year: 2020, Volume and Issue: 33(4)

Published: Dec. 2, 2020

Abstract The past decades have witnessed hyperthermia therapy (HTT) as an emerging strategy against malignant tumors. Nanomaterial‐based photothermal (PTT) and magnetic (MHT), highly effective noninvasive treatment models, offer advantages over other strategies in the of different types However, both PTT MHT cannot completely cure cancer due to recurrence distal metastasis. In recent years, immunotherapy has attracted widespread attention owing its capability activate body's own natural defense identify, attack, eradicate cells. Significant efforts been devoted studying activated immune responses caused by hyperthermia‐ablated this article, synergistic mechanism HTT immunotherapy, including immunogenic cell death reversal immunosuppressive tumor microenvironment is discussed. reports combination or HTT‐based multimodal with immunoadjuvant exploitation, checkpoint blockade therapy, adoptive cellular are summarized. As highlighted, these could achieve synergistically enhanced therapeutic outcomes primary tumors metastatic lesions, prevent recurrence, prolong survival period. Finally, current challenges prospective developments HTT‐synergized also reviewed.

Language: Английский

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Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

Laser & Photonics Review, Journal Year: 2020, Volume and Issue: 15(1)

Published: Dec. 6, 2020

Abstract Noninvasive lanthanide‐doped optical thermometers based on fluorescent intensity ratio (FIR) technique have emerged as promising noncontact tools for detecting the inaccessible objects at different scales. Currently, theoretical and experimental investigations of various influential factors thermal performances luminescence become one hotspots to develop highly sensitive thermometers. On other hand, near‐infrared (NIR) light‐responsive nanothermometers with deep‐tissue penetration been widely applied subcutaneous intracellular thermometry, which could be integrated heating imaging functions construct all‐in‐one thermometer‐heater platforms cancer diagnosis therapy. In this review, recent advances in thermometry thermally coupled levels (TCLs) are elaborately introduced from fundamental aspects possible biomedical applications, perspective outlook emerging challenges FIR science.

Language: Английский

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Recent advances in near-infrared emitting lanthanide-doped nanoconstructs: Mechanism, design and application for bioimaging

Coordination Chemistry Reviews, Journal Year: 2018, Volume and Issue: 381, P. 104 - 134

Published: Dec. 10, 2018

Language: Английский

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Ratiometric upconversion nanothermometry with dual emission at the same wavelength decoded via a time-resolved technique

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Jan. 7, 2020

Abstract The in vivo temperature monitoring of a microenvironment is significant biology and nanomedicine research. Luminescent nanothermometry provides noninvasive method detecting the with high sensitivity response speed. However, absorption scattering complex tissues limit signal penetration depth cause errors due to variation at different locations vivo. In order minimize these monitor vivo, present work, we provided strategy fabricate same-wavelength dual emission ratiometric upconversion luminescence nanothermometer based on hybrid structure composed emissive PbS quantum dots Tm-doped nanoparticles. two emissions working same wavelength, but luminescent lifetimes, were decoded via time-resolved technique. This improved ability thermal resolution ~0.5 K ~5.6% −1 obtained respectively.

Language: Английский

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Remote Light‐Responsive Nanocarriers for Controlled Drug Delivery: Advances and Perspectives

Small, Journal Year: 2019, Volume and Issue: 15(45)

Published: Oct. 10, 2019

Abstract Engineering of smart photoactivated nanomaterials for targeted drug delivery systems (DDS) has recently attracted considerable research interest as light enables precise and accurate controlled release molecules in specific diseased cells and/or tissues a highly spatial temporal manner. In general, the development appropriate light‐triggered DDS relies on processes photolysis, photoisomerization, photo‐cross‐linking/un‐cross‐linking, photoreduction, which are normally sensitive to ultraviolet (UV) or visible (Vis) irradiation. Considering issues poor tissue penetration high phototoxicity these high‐energy photons UV/Vis light, nanocarriers have been developed based light‐response low‐energy photon irradiation, particular wavelengths located near infrared (NIR) range. NIR achieved by using two‐photon absorption upconversion processes. Herein, recent advances light‐responsive nanoplatforms reviewed, covering mechanism responsive small polymers, UV Vis nanocarriers, nanocarriers. NIR‐light triggered excitation luminescence strategies is also included. addition, challenges future perspectives highlighted.

Language: Английский

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Achieving Thermo‐Mechano‐Opto‐Responsive Bitemporal Colorful Luminescence via Multiplexing of Dual Lanthanides in Piezoelectric Particles and its Multidimensional Anticounterfeiting

Advanced Materials, Journal Year: 2018, Volume and Issue: 30(49)

Published: Oct. 3, 2018

Optical characteristics of luminescent materials, including emission color (wavelength), lifetime, and excitation mode, play crucial roles in data communication information security. Conventional materials generally display unicolor, unitemporal, unimodal (occasionally bimodal) emission, resulting low-level readout decoding. The development multicolor, multitemporal, multimodal luminescence a single material has long been considered to be significant challenge. In this study, for the first time, superior integration colorful (red-orange-yellow-green), bitemporal (fluorescent delayed), four-modal (thermo-/mechano-motivated upconverted/downshifted) emissions particular piezoelectric particle via optical multiplexing dual-lanthanide dopants is demonstrated. as-prepared versatile NaNbO3 :Pr3+ ,Er3+ microparticles shown are particularly suitable embedding into polymer films achieve waterproof, flexible/wearable highly stretchable features, synchronously provide multidimensional codes that can visually read-out using simple commonly available tools (including LED smartphone, pen writing, cooling-heating stimuli, ultraviolet/near-infrared lamps). These findings offer unique insight designing integrated stimuli-responsive luminophors smart devices toward wide variety applications, advanced anticounterfeiting technology.

Language: Английский

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