Nonconventional luminophores: characteristics, advancements and perspectives

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(22), P. 12616 - 12655

Published: Jan. 1, 2021

Mechanisms, recent advancements and perspectives concerning nonconventional luminophores free of classic conjugates but with intrinsic photoluminescence are discussed.

Language: Английский

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Luminescent metal nanoclusters: Biosensing strategies and bioimaging applications

Aggregate, Journal Year: 2021, Volume and Issue: 2(1), P. 114 - 132

Published: Jan. 19, 2021

Abstract Metal nanoclusters (MNCs) are ultrasmall metal‐organic aggregates, composed of a metal core less than 2 nm and protecting shell ligand motifs. The controlled aggregation atoms (in the cluster core) motifs (around renders MNCs with numerous molecule‐like properties, among which strong bright luminescence has attracted extensive basic applied interests. It now known that aggregation‐induced emission is feasible mechanism for controlling MNCs, makes it particularly useful in biosensing bioimaging applications. Although fundamentals design principles largely determine practicality effectiveness applications, systematic summary this topic lacking current literature. In review, we aim to provide concise discussion latest developments applications luminescent highlighting their mechanisms, principles, strategies. Specifically, first introduce recent advances synthetic chemistry then briefly discuss MNCs. Then strategy exemplified. We conclude review our perspectives on further development MNC‐based optical probes Our expected guidance future practice designing synthesizing biomedical other

Language: Английский

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Gold Nanoclusters: Imaging, Therapy, and Theranostic Roles in Biomedical Applications

Bioconjugate Chemistry, Journal Year: 2021, Volume and Issue: 33(1), P. 4 - 23

Published: Dec. 12, 2021

For the past two decades, atomic gold nanoclusters (AuNCs, ultrasmall clusters of several to 100 atoms, having a total diameter <2 nm) have emerged as promising agents in diagnosis and treatment cancer. Owing their small size, significant quantization occurs conduction band, which leads emergent photonic properties disappearance plasmonic responses observed larger nanoparticles. example, AuNCs exhibit native luminescent properties, been well-explored literature. Using proteins, peptides, or other biomolecules structural scaffolds capping ligands, required for stabilization AuNCs, improves biocompatibility, while retaining distinct optical properties. This paved way use fluorescent bioimaging, later developed into multimodal imaging combined with computer tomography magnetic resonance examples. The development AuNC-based systems diagnostic applications cancer was then made possible by employing active passive tumor targeting strategies. Finally, potential therapeutic are extensive, used light-activated radiotherapy agents, well nanocarriers chemotherapeutic drugs, can be bound ligand directly via different mechanisms. In this review, we present an overview diverse biomedical terms imaging, therapy, combinations thereof, highlighting some additional relevant research.

Language: Английский

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Biomimetic Metallic Nanostructures for Biomedical Applications, Catalysis, and Beyond

Industrial & Engineering Chemistry Research, Journal Year: 2022, Volume and Issue: 61(22), P. 7547 - 7593

Published: May 16, 2022

Nature has inspired scientists to develop green and sustainable nanomaterials with biomimetic functions. Particularly, metallic nanostructures (biometal NPs) unique optical, catalytic, electrical properties have received tremendous attention in many fields, ranging from healthcare agriculture energy environmental sciences. Biometal NPs synthesized by various natural resources such as plant extracts, biomolecules, bacteria, even viruses possess functions including but not limited precise biorecognition, self-assembly, antibacterial/antiviral, enzymatic properties. In this report, we first review the bioinspired synthesis of industrially important metal nanoparticles, followed discussion on how different biological sources affect as-synthesized biometal NPs. Next, recent advancement applications these fields biomedical engineering catalysis, which include development nanobiosensors, imaging probes, nanotherapeutics (e.g., antimicrobial photodynamic/photothermal therapeutic agents), well design multifunctional nanozymes artificial metalloenzymes for chemical biopharmaceutical industries. Finally, highlight some latest advancements nanobiomimicry their emerging clean energy, electronic devices, data storage, shows game-changing role technological near future.

Language: Английский

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Aggregation-Induced Emission-Active Nanostructures: Beyond Biomedical Applications

ACS Nano, Journal Year: 2023, Volume and Issue: 17(3), P. 1845 - 1878

Published: Jan. 19, 2023

The discovery of aggregation-induced emission (AIE) phenomenon in 2001 has had a significant impact on materials development across different research disciplines. AIE-active have been widely exploited for various applications optoelectronics, sensing, biomedical, and stimuli-responsive systems, etc. This is made possible by integrating AIE features with other fields science engineering, such as nanoscience nanotechnology. extensively employed, particularly biomedical applications, biosensing, bioimaging, theranostics. However, AIE-based nanotechnology comparatively less, although there increasing activities recent years. Given the significance potential marriage between hallmark development, this review article summarizes showcases latest efforts nanomaterials, including nanomaterials synthesis their nonbiomedical functional coatings, systems. A perspective outlook nanostructured relevant will be provided, giving an insight into how to design nanostructures well beyond domain.

Language: Английский

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Visible to NIR‐II Photoluminescence of Atomically Precise Gold Nanoclusters

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(8)

Published: Nov. 3, 2023

Abstract Atomically precise gold nanoclusters (NCs) have emerged as a new class of precision materials and attracted wide interest in recent years. One the unique properties such pertains to their photoluminescence (PL), for it can widely span visible near‐infrared–I –II wavelengths (NIR‐I/II), even beyond 1700 nm by manipulating size, structure, composition. The current research efforts focus on structure–PL correlation development strategies raising PL quantum yields, which is nontrivial when moving from near‐infrared wavelengths, especially NIR–II regions. This review summarizes progress field, including i) types observed NCs fluorescence, phosphorescence, thermally activated delayed well dual emission; ii) some effective that are devised improve yield (QY) NCs, heterometal doping, surface rigidification, core phonon engineering, with double‐digit QYs NIR horizons; iii) applications luminescent bioimaging, photosensitization, optoelectronics. Finally, remaining challenges opportunities future highlighted.

Language: Английский

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Impact of Ligands on Structural and Optical Properties of Ag₂₉ Nanoclusters

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(25), P. 9405 - 9414

Published: June 17, 2021

A ligand exchange strategy has been employed to understand the role of ligands on structural and optical properties atomically precise 29 atom silver nanoclusters (NCs). By optimization, ∼44-fold quantum yield (QY) enhancement Ag29(BDT)12–x(DHLA)x NCs (x = 1–6) was achieved, where BDT DHLA refer 1,3-benzene-dithiol dihydrolipoic acid, respectively. High-resolution mass spectrometry used monitor exchange, structures different were obtained through density functional theory (DFT). The DFT results from Ag29(BDT)11(DHLA) further experimentally verified collisional cross-section (CCS) analysis using ion mobility (IM MS). An excellent match in predicted CCS values with respective experimental data led a likely structure Ag29(DHLA)12 consisting an icosahedral core Ag16S24 shell. Combining observation series NCs, Ag29–yAuy(BDT)12–x(DHLA)x (where y, x 0,0; 0,1; 0,12 1,12; respectively), it found that while metal is responsible for origin photoluminescence (PL), play vital roles determining their resultant PLQY.

Language: Английский

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Controlled colloidal metal nanoparticles and nanoclusters: recent applications as cocatalysts for improving photocatalytic water-splitting activity

Journal of Materials Chemistry A, Journal Year: 2020, Volume and Issue: 8(32), P. 16081 - 16113

Published: Jan. 1, 2020

This review introduces the importance of controlled colloidal NPs/NCs in research on water-splitting photocatalysis by summarizing existing research.

Language: Английский

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Comprehensive understanding of the synthesis and formation mechanism of dendritic mesoporous silica nanospheres

Nanoscale Advances, Journal Year: 2020, Volume and Issue: 2(5), P. 1792 - 1810

Published: Jan. 1, 2020

The elucidation of structure and formation mechanism dendritic mesoporous silica nanospheres is in extensive debates. This review summarizes the recent advance on their synthesis application, more concerned kinetic mechanics.

Language: Английский

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Atomically precise thiolate‐protected gold nanoclusters: Current status of designability of the structure and physicochemical properties

Aggregate, Journal Year: 2022, Volume and Issue: 4(2)

Published: July 30, 2022

Abstract Thiolate (SR)‐protected gold nanoclusters (Au n (SR) m NCs) are a rare type of material capable simultaneously exhibiting multiple physicochemical properties well‐suited to specific applications, including photoluminescence, thermocatalysis, electrocatalysis, photocatalysis, magnetism, and optical activity. Over the past several decades, there has been tremendous progress in our understanding structure Au NCs, resulting ability fine‐tune characteristics these materials. It is therefore helpful examine extent which related metal NCs can now be adjusted based on design. This review presents representative examples previous studies concerning geometry, electronic structure, luminescence properties, catalysis, magnetism activity discusses current status designability impart structural characteristics. information expected accelerate fabrication highly functional materials NCs.

Language: Английский

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