Boosted Circularly Polarized Luminescence of a Chiral Metallacage Through Co‐Assembly in Confined Microfluidic Environments DOI
Jianjian Zhao, Kai Zeng, Wei‐Tao Dou

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 35(3)

Published: Sept. 20, 2024

Abstract Chiral metallacages, with their precisely distributed luminescent and chiral units inherent adaptive chirality, represent an ideal framework for developing circularly polarized luminescence (CPL)‐active materials. Despite potential, enhancing the dissymmetry factor ( g lum ) of metallacage‐based materials remains a significant challenge. In this study, useful approach is proposed by co‐assembling donor metallacage Δ 4 / Λ ‐Zn A achiral acceptor Nile red (NiR), achieving efficient energy chirality transfer resulting in enhanced CPL these co‐assemblies. More importantly, microfluidic laminar flow utilized, known providing stable driving forces confined spaces, to achieve marked improvement values co‐assemblies within polymethyl methacrylate (PMMA) films. Computational fluid dynamics (CFD) simulations small‐angle X‐ray scattering (SAXS) experiments confirm that films containing /NiR, prepared via chips, display well‐defined distributions metallacages NiR due controllable assembly process facilitated flow. This work pioneers new methodology significantly enhance materials, opening avenues field photonics.

Language: Английский

Concentration‐Switchable Assembly of Carbon Dots for Circularly Polarized Luminescent Amplification in Chiral Logic Gates and Deep‐Red Light‐Emitting Diodes DOI
Lin Ai, Haolin Wang, Boyang Wang

et al.

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

Published: Oct. 3, 2024

Abstract Stimuli‐responsive circularly polarized luminescent (CPL) materials are expected to find widespread application in advanced information technologies, such as 3D displays, multilevel encryption, and chiral optical devices. Here, using R‐/S‐α‐phenylethylamine 3,4,9,10‐perylenetetracarboxylic dianhydride precursors, carbon dots (Ch‐CDs) exhibiting bright concentration‐dependent luminescence synthesized, demonstrating reversible responses both their morphologies emission spectra. By adjusting Ch‐CD concentration, the switchable wavelength is extended over 180 nm (539–720 nm), with maximum quantum efficiency reaching 100%. Meanwhile, upon increasing red‐shifts, while chirality of assembled nanoribbons synchronously amplified, ultimately achieving CPL at 709 a asymmetry factor 2.18 × 10 −2 . These values represent longest largest g lum reported for CDs. Considering remarkable properties synthesized Ch‐CDs, logic gates designed, potential practical applications demonstrated anti‐counterfeiting flexible electronic printing, solid‐state CPL. Furthermore, deep‐red electroluminescence light‐emitting diodes (EL‐LEDs) prepared these an external 1.98%, which highest value date CDs EL‐LEDs, first report devices based on

Language: Английский

Citations

12
Endowing single-crystal polymers with circularly polarized luminescence DOI Creative Commons
Zhong‐Qiu Li, Meng Li,

Zili Chen

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

The preparation of single-crystal polymers with circularly polarized luminesce (CPL) remains a challenging task in chemistry and materials science. Herein, we present the single-crystal-to-single-crystal topochemical photopolymerization chiral organic salt to achieve this goal. in-situ reaction 1,4-bis((E)-2-(pyridin-4-yl)vinyl)benzene (1) (+)- or (−)-camphorsulfonic acid (CSA) gives monomer crystal 1[( + )/( − )-CSA]2 showing yellow CPL high luminescent dissymmetry factor |glum| 0.035 emission quantum yield Φ 49.7%. Upon photo-induced [2 2] polymerization, polyionic poly-1[( are obtained. (SCSC) is revealed by situ powder X-ray diffraction, X-ray, optical microscopy, infrared, circular dichroism, spectroscopic analyzes. Interestingly, photopolymer crystals show blue handedness-inverted 0.011 (Φ = 14.2%), respect crystal. Furthermore, patterned circularly-polarized photonic heterojunctions alternate sub-blocks prepared mask-assisted method. Our findings provide vision for fabricating high-performance CPL-active crystalline polymer materials, paving way further development photo-response systems. Single-crystal luminescence interesting but prepare. Here, authors report photopolymerisation form luminescence.

Language: Английский

Citations

1
Dual-ligand chiral MOFs exhibiting circularly polarized room temperature phosphorescence for anti-counterfeiting DOI
Huifang Zheng, Qingqing Wang, Xinchao Wang

et al.

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

Language: Английский

Citations

0
Fluorescence Microscopy Imaging of Light-Harvesting in Self-Assembled Nanofibers of Naphthalenediimides toward Perylenediimide Guests DOI
Ramarani Sethy,

Arnaud Brosseau,

Takuya Nakashima

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

The self-assembly of a bichromophoric naphthalenediimide (NDI) into nanofibers showed efficient energy transfer (light-harvesting) to perylenediimide (PDI) molecules through host-guest interaction, which can be visualized by microscopy using samples deposited on glass surfaces. In combination with atomic force microscopy, spectral, and polarization analyses, fluorescence imaging unveiled the inhomogeneity, packing defects, relative spatial arrangement PDI NDI molecular units, were found affect exciton mobility along efficiency from guests. Fluorescence microspectroscopy shows that occurs isolated their partial self-aggregates. emit strong blue polarized emission, while emission corresponding guest is weakly polarized, indicating local disruption chromophore-ordering upon binding.

Language: Английский

Citations

0
Artificial Light Harvesting Systems Based on Novel AIEgen-branched Rotaxane Dendrimers for Photocatalyzed Functionalization of C-H Bonds DOI Creative Commons

Xiao‐Qin Xu,

Yi-Ru Song,

Junyu Cao

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Novel AIEgen-branched rotaxane dendrimers with up to 42 precisely distributed TPE units were synthesized, enabling the construction of artificial LHSs that exhibit generation-dependent photocatalytic performance in C–H bond functionalization.

Language: Английский

Citations

0
Two (AgI3I)4L4 cages elucidate the rules for silver-cluster vertex design DOI Creative Commons
Andrew W. Heard, Samuel E. Clark, Charlie T. McTernan

et al.

Chem, Journal Year: 2025, Volume and Issue: unknown, P. 102456 - 102456

Published: March 1, 2025

Language: Английский

Citations

0
Chiral europium halides with high-performance magnetic field tunable red circularly polarized luminescence at room temperature DOI Creative Commons
Xinyi Niu, Yang Li,

Haolin Lu

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 14, 2025

Chiral organic-inorganic hybrid metal halides as promising circularly polarized luminescence (CPL) emitter candidates hold great potential for high-definition displays and future spin-optoelectronics. The recent challenge lies primarily in developing high-performance red CPL emitters. Here, coupling the f-f transition characteristics of trivalent europium ions (Eu3+) with chirality, we construct chiral Eu-based halides, (R/S-3BrMBA)3EuCl6, which exhibit strong predictable emission large photoluminescence quantum yield (59.8%), narrow bandwidth (≈2 nm), long lifetime ms), together dissymmetry factor |glum| 1.84 × 10−2. Compared previously reported these show highest brightness. Furthermore, degree polarization (R/S-3BrMBA)3EuCl6 can be manipulated by external magnetic field. Particularly, benefiting from field-generated Zeeman splitting spin mixing at exciton states, an anomalously positive magneto-photoluminescence was observed room temperature. This work provides efficient strategy constructing both pure-red It also opens door rare-earth toward optoelectronic spintronic applications. perovskites are materials luminescence. Here authors present leading to magneto-chiroptical properties.

Language: Английский

Citations

0
Upconversion/Downshifting Circularly Polarized Luminescence over 1200 nm in a Single Nanoparticle for Optical Anticounterfeiting and Information Encryption DOI Open Access
Bowen Yang,

Xuefeng Yang,

Yonghong Shi

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 7, 2024

Abstract Multimodal upconversion and downshifting circularly polarized luminescent materials hold significant potential for optical anticounterfeiting applications due to their exceptional chiroptical properties. However, constructing these within a single emitter remains challenging. In this study, conceptual model of multimodal upconversion/downshifting luminescence (CPL) is realized nanoparticle. A new type nanoparticles with multilayer core–shell architecture fabricated, capable delivering luminescence, when excited by 980 nm laser. Utilizing co‐assembly strategy, CPL emission, covering broad emission range from ultraviolet (UV) the second near‐infrared (NIR‐II) region, can be at supramolecular level. These properties closely follow chirality host matrix are strongly dependent on distribution mode films. The behavior enabled cutting‐edge encryption including information encryption. This work introduces novel approach designing opens avenues development functional materials.

Language: Английский

Citations

2
Amplifying circularly polarized luminescence in chirality-matched dye-silver clusters DOI
Jatish Kumar, Takuya Nakashima

Chem, Journal Year: 2024, Volume and Issue: 10(6), P. 1628 - 1630

Published: May 30, 2024

Language: Английский

Citations

1
Hierarchical assembly of Ag40 nanowheel ranging from building blocks to diverse superstructure regulation DOI Creative Commons

Xue‐Jing Zhai,

Meng Luo,

Xi‐Ming Luo

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Oct. 23, 2024

Achieving precise and controllable hierarchical self-assembly of functional nanoclusters within crystal lattices to create distinct architectures is immense significance, yet it creates considerable challenges. Here we successfully synthesized a silver nanowheel Ag

Language: Английский

Citations

1