Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

Light Science & Applications, Journal Year: 2022, Volume and Issue: 11(1)

Published: July 14, 2022

Chiral nanomaterials with intrinsic chirality or spatial asymmetry at the nanoscale are currently in limelight of both fundamental research and diverse important technological applications due to their unprecedented physicochemical characteristics such as intense light-matter interactions, enhanced circular dichroism, strong circularly polarized luminescence. Herein, we provide a comprehensive overview state-of-the-art advances liquid crystal-templated chiral nanomaterials. The chiroptical properties touched, design principles bottom-up synthesis strategies discussed. Different functional based on liquid-crystalline soft templates, including plasmonic luminescent nanomaterials, systematically introduced, underlying mechanisms, properties, potential emphasized. This review concludes perspective emerging applications, challenges, future opportunities fascinating can not only deepen our understanding fundamentals soft-matter chirality, but also shine light development advanced toward versatile optics, biology, catalysis, electronics, beyond.

Language: Английский

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Electron–phonon coupling-assisted universal red luminescence of o-phenylenediamine-based carbon dots

Light Science & Applications, Journal Year: 2022, Volume and Issue: 11(1)

Published: June 6, 2022

Abstract Due to the complex core–shell structure and variety of surface functional groups, photoluminescence (PL) mechanism carbon dots (CDs) remain unclear. o-Phenylenediamine (oPD), as one most common precursors for preparing red emissive CDs, has been extensively studied. Interestingly, emission CDs based on oPD have similar PL characteristics. Herein, we prepared six different oPD-based found that they had almost same absorption spectra after purification. Structural spectral characterization indicated core structures but polymer shells. Furthermore, single-molecule spectroscopy confirmed multi-modal those originated from transitions vibrational energy levels center in core. In addition, phenomenon “spectral splitting” single-particle was observed at low temperature, which these were unique materials with properties both organic molecules quantum dots. Finally, theoretical calculations revealed their potential polymerization mode structure. Moreover, proposed red-emitting precursors; is, regulates emission, shell intensity. Our work resolves controversy CDs. These findings provide a general guide exploration structural analysis other types

Language: Английский

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Zero-Dimensional Carbon Nanomaterials for Fluorescent Sensing and Imaging

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 11047 - 11136

Published: Sept. 7, 2023

Advances in nanotechnology and nanomaterials have attracted considerable interest play key roles scientific innovations diverse fields. In particular, increased attention has been focused on carbon-based exhibiting extended structures unique properties. Among these materials, zero-dimensional structures, including fullerenes, carbon nano-onions, nanodiamonds, dots, possess excellent bioaffinities superior fluorescence properties that make suitable for application to environmental biological sensing, imaging, therapeutics. This review provides a systematic overview of the classification structural properties, design principles preparation methods, optical sensing applications nanomaterials. Recent interesting breakthroughs sensitive selective imaging heavy metal pollutants, hazardous substances, bioactive molecules as well information encryption, super-resolution photoacoustic phototherapy nanomedicine delivery are main focus this review. Finally, future challenges prospects materials highlighted envisaged. presents comprehensive basis directions designing, developing, applying fascinating fluorescent sensors fabricated based specific requirements numerous research

Language: Английский

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Circularly polarized luminescence in chiral orientationally ordered soft matter systems

Deleted Journal, Journal Year: 2023, Volume and Issue: 1(1)

Published: July 23, 2023

Abstract Circularly polarized luminescent (CPL) materials have received significant attention in the field of fundamental science recently. These offer substantial advancement technological applications, such as optical data storage, displays, and quantum communication. Various strategies been proposed self‐assembled consisting inorganic, organic, hybrid systems, particularly chiral orientationally ordered soft matter systems (e.g., liquid crystals (LCs) LC polymers). However, developing scientific approaches to achieve pronounced steerable circularly light emission remains challenging. Herein, we present a comprehensive review on recent development CPL based LCs, including thermotropic LCs (cholesteric bent‐core LCs), lyotropic (nanocellulose polyacetylene‐based polymers LC‐based polymers, helical nanofibers, network). In addition, mechanisms, design principles, potential applications these are systematically reviewed. This summarizes with prospect latent challenges, which can strengthen our understanding basic principles provide new insight into progress several fields, chemistry, science, optics, electronics, biology.

Language: Английский

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State-of-the-art of biomass-derived carbon dots: Preparation, properties, and applications

Chinese Chemical Letters, Journal Year: 2023, Volume and Issue: 35(1), P. 108423 - 108423

Published: April 5, 2023

Language: Английский

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RNA‐Targeting Carbon Dots for Live‐Cell Imaging of Granule Dynamics

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(21)

Published: Jan. 16, 2023

Abstract It is significant to monitor the different RNA granules dynamics and phase separation process inside cells under various stresses, for example, oxidative stress. The current small‐molecule probes work well only in fixed usually encounter problems such as insufficient stability biocompatibility, thus a specific RNA‐targeting fluorescent nanoprobe that can be used living urgently desired. Here, de novo design microwave‐assisted synthesis of novel RNA‐targeting, red‐emissive carbon dots (named M‐CDs) are reported by choosing neutral red levofloxacin precursors. as‐synthesized M‐CDs water‐soluble with high fluorescence quantum yield 22.83% selectively bind resulting an enhanced fluorescence. More interestingly, fast internalized into within 5 s real‐time imaging dynamic intracellular stress stress, revealing some characteristics have not been identified previously protein biomarkers. This research paves new pathway visualizing bulk studying phase‐separation behaviors rational terms structure functionality.

Language: Английский

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Diversity and Tailorability of Photoelectrochemical Properties of Carbon Dots

Accounts of Chemical Research, Journal Year: 2022, Volume and Issue: 55(21), P. 3110 - 3124

Published: Oct. 14, 2022

As a new kind of carbon based functional material, dots (CDs) have sparked much interest in recent years. The tunable structure, composition, and morphology CDs unlocks opportunities to enable diversity their photoelectrochemical properties, thus they show great potential various applications such as biology, catalysis, sensors, energy storage. Nevertheless, the related understanding is insufficient at present due inherent complexity microstructure, which involves intersection high polymer, bulk carbon, quantum dot (QD). A good underlying mechanism behind properties still formidable challenge, requiring integration robust knowledge from organic chemistry, materials science, solid state physics. Within this context, discovering more appealing elucidating fundamental factors that affect proposing effective engineering strategies can realize specific functions for are now highly pursued by researchers.At beginning Account, main features introduced, where not only basic structural, compositional morphological characteristics but also rich elucidated, among band gap, chirality, photoinduced potential, electron sink effect particularly emphasized. Furthermore, analysis techniques including transient current (TPC), voltage (TPV), machine learning (ML) reveal unique described. Then, several aim rationally tailor oriented highlighted. These regulation modulation (e.g., developing with geometrical configuration, controlling particle size), phase altering crystallinity, introducing foreign atoms), surface functionalization grafting types groups), interfacial tuning building CD-based nanohybrids well-defined interfaces). Although investigation relatively undeveloped because complexity, does hinder wide application. At same time, exploring extensive will promote in-depth understanding. Finally, chances CD-centered blueprint sustainable society explored challenges future research field proposed follows: (i) controllable synthesis uniform size; (ii) search novel morphology, or composition; (iii) quantitative property CDs; (iv) performance enhancement external forces magnetism heat injection; (v) construction dual concept; (vi) further on different photocatalytic applications. On whole, Account may provide meaningful references microstructure-property correlation well CDs, thereby promoting transition practical

Language: Английский

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Chiral materials and mechanisms for circularly polarized light-emitting diodes

Nature Photonics, Journal Year: 2024, Volume and Issue: 18(7), P. 658 - 668

Published: March 25, 2024

Language: Английский

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Intense Circularly Polarized Fluorescence and Room-Temperature Phosphorescence in Carbon Dots/Chiral Helical Polymer Composite Films

ACS Nano, Journal Year: 2023, Volume and Issue: 17(7), P. 6912 - 6921

Published: March 31, 2023

Chiral carbon dots (C-dots) with a circularly polarized fluorescence (CPF) property have attracted tremendous attention due to their significant applications in chiral optoelectronics and theranostics. However, constructing room-temperature phosphorescent (CPRTP) C-dots remains great challenge. Herein, strategy is established achieve efficient CPF CPRTP emissions C-dots/chiral helical polymer bilayer composite film. Taking advantage of the filter effect polymer, intense large dissymmetric factors up 1.4 × 10-1 1.2 10-2 are respectively obtained, even though there only simple interface contact between layer layer. More importantly, white-color emission multiple information display encryption further realized based on prepared luminescent films.

Language: Английский

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Regulation of biological processes by intrinsically chiral engineered materials

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 8(6), P. 403 - 413

Published: May 17, 2023

Language: Английский

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