Molecularly Engineered Room-Temperature Phosphorescence for Biomedical Application: From the Visible toward Second Near-Infrared Window

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(24), P. 13966 - 14037

Published: Nov. 22, 2023

Phosphorescence, characterized by luminescent lifetimes significantly longer than that of biological autofluorescence under ambient environment, is great value for biomedical applications. Academic evidence fluorescence imaging indicates virtually all metrics (sensitivity, resolution, and penetration depths) are improved when progressing into wavelength regions, especially the recently reported second near-infrared (NIR-II, 1000–1700 nm) window. Although emission probes does matter, it not clear whether guideline "the wavelength, better effect" still suitable developing phosphorescent probes. For tissue-specific bioimaging, long-lived probes, even if they emit visible phosphorescence, enable accurate visualization large deep tissues. studies dealing with bioimaging tiny architectures or dynamic physiopathological activities, prerequisite rigorous planning long-wavelength being aware cooperative contribution long wavelengths improving spatiotemporal depth, sensitivity bioimaging. In this Review, emerging molecular engineering methods room-temperature phosphorescence discussed through lens photophysical mechanisms. We highlight roles from to NIR-II windows toward bioapplications. To appreciate such advances, challenges prospects in rapidly growing described.

Language: Английский

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Photoluminescent Characterization of Metal Nanoclusters: Basic Parameters, Methods, and Applications

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: March 24, 2024

Abstract Metal nanoclusters (MNCs) can be synthesized with atomically precise structures and molecule formulae due to the rapid development of nanocluster science in recent decades. The ultrasmall size range (normally < 2 nm) endows MNCs plenty molecular‐like properties, among which photoluminescent properties have aroused extensive attention. Tracing research processes luminescent nanoclusters, various analysis characterization methods play a significant role elucidating mechanism analyzing properties. In this review, it is aimed systematically summarize normally used characterizations including basic parameters methods, such as excitation/emission wavelength, quantum yield, lifetime. For each key parameter, first its definition meaning introduced then relevant measuring principles revelation from collected data are discussed. Then, discussed details how explore construct NC‐based applications based on measured data. By means these strategies, designs explained quantitatively qualitatively. Hence, review expected provide clear guidance for researchers characterize better understand results.

Language: Английский

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Chiral Nanostructures: New Twists

ACS Nano, Journal Year: 2021, Volume and Issue: 15(8), P. 12457 - 12460

Published: Aug. 24, 2021

ADVERTISEMENT RETURN TO ISSUEEditorialNEXTChiral Nanostructures: New TwistsNicholas A. Kotov*Nicholas Kotov*Email: [email protected]More by Nicholas Kotovhttps://orcid.org/0000-0002-6864-5804, Luis M. Liz-Marzán*Luis Liz-Marzán*Email: Liz-Marzánhttps://orcid.org/0000-0002-6647-1353, and Paul S. Weiss*Paul Weiss*Email: Weisshttps://orcid.org/0000-0001-5527-6248Cite this: ACS Nano 2021, 15, 8, 12457–12460Publication Date (Web):August 24, 2021Publication History Published online24 August 2021Published inissue 24 2021https://pubs.acs.org/doi/10.1021/acsnano.1c06959https://doi.org/10.1021/acsnano.1c06959editorialACS PublicationsCopyright © 2021 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions free to access through this site. Learn MoreArticle Views10116Altmetric-Citations33LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated reflect usage leading up last few days.Citations number other articles citing article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail (791 KB) Get e-AlertscloseSUBJECTS:Chirality,Nanomaterials,Nanostructures,Plasmonics,Superstructures e-Alerts

Language: Английский

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Emerging low-cost, large-scale photonic platforms with soft lithography and self-assembly

Photonics Insights, Journal Year: 2023, Volume and Issue: 2(2), P. R04 - R04

Published: Jan. 1, 2023

Advancements in micro/nanofabrication have enabled the realization of practical micro/nanoscale photonic devices such as absorbers, solar cells, metalenses, and metaholograms. Although performance these has been improved by enhancing design flexibility structural materials through advanced fabrication methods, achieving large-area high-throughput tiny remains a challenge. In this aspect, various technologies investigated for realizing mass production consisting micro/nanostructural materials. This review describes recent advancements soft lithography, colloidal self-assembly, block copolymer which are promising methods suitable commercialization applications. addition, we introduce low-cost large-scale techniques micro/nano with specific examples display technology sensors. The inferences presented expected to function guide accelerating sub-wavelength-scale devices.

Language: Английский

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Enhanced Replenishment of Active Lattice Oxygen Using Chiral Copper Oxide

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(22), P. 28517 - 28525

Published: May 20, 2024

Effective catalytic performance of the transition metal oxide is attributed to high specific surface areas, abundant oxygen atoms, and balanced valence ratios. Although chirality has attracted attention, most studies have focused on optical application. A few chiral oxides were used as electrocatalysts photocatalysts. The influence catalysts thermal catalysis process been less explored. In this study, Mn-loaded (M/l-CuO M/d-CuO) achiral CuO (M/a-CuO) synthesized compared in oxidization toluene. Spectrally analyzed Mn was well-dispersed both CuO. l-CuO d-CuO showed nanoflower-like chirality. angles between each (001) plane source toluene turnover frequency (TOF) samples order Mn/d-CuO (5.6 × 10–5 s–1) > Mn/l-CuO (4.4 Mn/a-CuO (3.2 at 240 °C, consistent with replenishment rate. as-prepared had similar ratios lattice oxygen/surface adsorbed oxygen, Mn3+/Mn4+, Cu+/Cu2+. higher TOF chirality, which increased speed from gaseous phase solid surface. Our study indicates gas–solid a structure–activity viewpoint.

Language: Английский

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Protein-templated metal nanoclusters for chemical sensing

Frontiers in Analytical Science, Journal Year: 2025, Volume and Issue: 5

Published: Jan. 22, 2025

Metal nanoclusters (MNCs) possess unique optical properties, discrete energy levels, biocompatibility and photostability, making them pivotal photoluminescent probes in chemical sensing. While substantial work has addressed the synthesis, theoretical studies applications of gold-, copper-, silver-based MNCs, this review introduces fresh perspectives on how nature concentration templates—particularly protein molecules—affect stability sensing capabilities MNCs. We delve into merits using templates for creating highly stable MNCs with tunable photoluminescence (PL), providing a detailed comparison non-protein based systems. This also unveils recent advancements photophysical characteristics protein-templated setting it apart from previous reviews by focusing cutting-edge innovations template influence. Challenges future prospects are highlighted, marking critical pathways upcoming research. not only integrates current knowledge but identifies gaps opportunities covered extensively earlier reviews, such as nuanced effects variation MNCs’ functional properties.

Language: Английский

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Chiral Nematic Coatings Based on Cellulose Nanocrystals as a Multiplexing Platform for Humidity Sensing and Dual Anticounterfeiting

Small, Journal Year: 2021, Volume and Issue: 17(50)

Published: Oct. 17, 2021

The need for a precise regulation of the properties chiral nematic structures in response to external stimuli is addressed. Self-assembled iridescent coatings are produced under effect electrostatic interactions between cellulose nanocrystals and poly(acrylic acid), endowing high anisotropic dissymmetry (>0.3) sensitivity environmental humidity (13.1 nm/1% at 68-75% relative humidity, RH). phenomena associated with shifts selective light reflection (green orange) polarization, facilitate tunable transmitted colors (blue given rotation angles (RA). Such conveniently integrated into "RH-RA-color" ternary code that introduced as an anticounterfeiting technology, taking advantage multicolor patterns track changes RH RA. proposed charge-driven assembly opens new opportunities materials enable optical sensing information encryption.

Language: Английский

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Advances of gold nanoclusters for bioimaging

iScience, Journal Year: 2022, Volume and Issue: 25(10), P. 105022 - 105022

Published: Aug. 30, 2022

Gold nanoclusters (AuNCs) have become a promising material for bioimaging detection because of their tunable photoluminescence, large Stokes shift, low photobleaching, and good biocompatibility. Last decade, great efforts been made to develop AuNCs enhanced imaging contrast multimodal imaging. Herein, an updated overview recent advances in was present visible fluorescence (FL) imaging, near-infrared (NIR-FL) two-photon (TP-NIR-FL) computed tomography (CT) positron emission (PET) magnetic resonance (MRI), photoacoustic (PA) The justification applied mentioned above applications discussed, the performance location different were summarized highlighted unified parameter coordinate system corresponding bioimaging, current challenges, research frontiers, prospects discussed. This review will bring new insights into future development bio-diagnostic

Language: Английский

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Supramolecular Self-Assembly of Atomically Precise Silver Nanoclusters with Chiral Peptide for Temperature Sensing and Detection of Arginine

Nanomaterials, Journal Year: 2022, Volume and Issue: 12(3), P. 424 - 424

Published: Jan. 27, 2022

Metal nanoclusters (NCs) as a new type of fluorescent material have attracted great interest due to their good biocompatibilities and outstanding optical properties. However, most the studies on metal NCs focus synthesis, atomic or molecular assembly, whereas ability self-assemble higher-level hierarchical nanomaterials through supramolecular interactions has rarely been reported. Herein, we investigate precise silver (Ag9-NCs, [Ag9(mba)9], where H2mba = 2-mercaptobenzoic acid) peptide DD-5 were used induce self-assembly, which can trigger an aggregation-induced luminescence (AIE) effect Ag9-NCs non-covalent forces (H-bond, π-π stacking) argentophilic [Ag(I)-Ag(I)]. The large Stokes shift (~140 nm) microsecond fluorescence lifetime (6.1 μs) indicate that Ag9-NCs/DD-5 hydrogel is phosphor. At same time, chirality was successfully transferred achiral because also circularly polarized (CPL) In addition, luminescent selective sensitive detection small biological molecule arginine. This work shows induces self-assembly obtain high gel, maybe become candidate in fields sensors sciences.

Language: Английский

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Ligand‐Induced Digital Programmable Photochromic CdS Materials Toward Dual‐Mode Light‐Printing and Information Encryption

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: May 9, 2024

Abstract The explosive growth of information and its widespread availability underscores the need for robust encryption anticounterfeiting measures. In this study, CdS quantum dots are engineered (QDs) to manifest multiple visual responses a single trigger through strategic ligand design. surface engineering method allows QDs transition from yellow black upon photoexcitation‐induced electron transfer Cd(II) Cd(0). Surface ligands desorption under hole injection, leading an increase in size resulting redshift photoluminescence. This redox reaction reveals unprecedented photochromism photoluminescence phenomena, establishing foundation advanced protection Utilizing these QDs, excellent writing performance UV irradiation is achieved solid‐state substrates, while dual‐mode system realized gel matrices, opening up new avenues as well cumulative interactive protection. Furthermore, employed ink 3D printing, enabling creation digitally programmable materials with distinct temporally evolving appearances by controlling oxygen content regulate rate photochromism. advancement also sheds light on progress printing technology.

Language: Английский

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