Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Feng Zeyu,Li Jialei,Yang Peng,Xu Xiangxiang,Wang Di,Li Jiahe,Zhang Chutian,Li Jingguo,Zhang Hongli,Zou Gang,Chen Xin
Multimodal optical-materials are highly desirable due to their advantages in enhancing information security, though independent modulation is challenging, especially accurately controlling the orthogonal relationship between the structural coloration (SC) and fluorescence (FL) pattern. Herein, we report a strategy which combines programmable structural coloration and switchable circularly polarized luminescence (CPL) for multimodal information encryption. Using photomask with aligned grating, programmable periodic patterns are fabricated on a polydiacetylene (PDA) gel film, which produces image in tunable structural colors. Introducing a chiral fluorescence layer containing perovskite nanocrystals and twisted-stacking Ag nanowires (NWs) bilayers, which provides stimuli-responsive FL and CPL with high dissymmetry factor ( g lum , up to 1.3). Importantly, the structural coloration information and FL patterns (including CPL pattern) can be independently modulated without mutual interference, even selectively concealed or exposed by varying microstructure design of the cross-linked PDA gel or by acetonitrile treatment.
研究领域:
材料科学
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光学
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化学
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DOI
PubMed
高影响因子
ACS Nano
·
2024
·
IF 15.8
Yuan Wang,Mu-Sen Song,Jiaqi Zhao,Zhen Li,Tinglei Wang,Hai Wang,Hai-Yu Wang,Yu Wang
This work reports the synthesis of chiral perovskite heterostructure films by combining a two-dimensional (2D) chiral (R-/S-MBA)2PbI4 perovskite with CsPbBr3 quantum dots (QDs). The as-synthesized chiral heterostructure films exhibit obvious circularly polarized luminescence (CPL) properties, even though pure 2D chiral perovskite cannot present photoluminescence. It indicates that the chirality of the excited state of the QDs originates from the 2D chiral perovskite. The circular polarization-resolved transient absorption (TA) spectra further demonstrate that the CPL response of heterostructure films originates from the energy transfer between the chiral perovskite layer and QDs layer and the suppression of spin relaxation, which induces the imbalance of the spin population of excited states in QDs layer. In addition, the photoluminescence (PL), circular dichroism (CD), and CPL spectra of these heterostructure films can be controlled by varying the thickness and component of the chiral perovskite layer, which demonstrates that the anion exchange between chiral perovskite and CsPbBr3 QDs can tune the chemical composition and optoelectronic properties due to the low bonding energy difference between them and decrease the strain within the QDs layer to reduce the radiative recombination lifetime. This work provides guidance for the synthesis of chiral perovskites with a strong CPL response and further provides insight into the origination of CPL.
研究领域:
材料科学
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光学
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 9
·4472-4477
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IF 3.3
Chujing Yang,Zhiwei Zhang,Jingqi Chen,Xinying Zhang,Yankai Dai,Xuyi Li,Yingying Chen,Jiaqiang Xu,Lingyan Feng
We found that the complexes of nucleotides and terbium(III) exhibit circularly polarized luminescence (CPL). The CPL of GMP/Tb/Ag coordination polymer nanoparticles (CPNs) was converted by a magnetic field and pH. The CPL of the purine nucleobase of nucleotides was opposite to that of the pyrimidine nucleobase. GMP/Tb/Ag CPNs could be used as advanced safety coatings and acid–base switches, and Tb/Ag could be used as CPL probes for rapid differentiation of nucleotides, which provided ideas for multiple transformations and applications of CPL.
研究领域:
生物化学
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材料科学
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光学
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DOI
高影响因子
CHEMISTRY OF MATERIALS
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2022
·
IF 10.508
Pengpeng Li,Huaizhi Gao,Biao Zhao,Jianping Deng
As one of the most challenging scientific issues in the world, the origin of natural homochirality has attracted intense attention and has been widely studied. Herein, a unique, simple, and scalable approach to achieve the birth of helical chirality is presented. In the absence of any additional physical or chemical chiral source, optical activity has been acquired in the absolutely achiral polymer casting systems. Specifically, optically active and recyclable composite films are fabricated from casting racemic helical substituted polyacetylenes and achiral polar polymeric matrices. The induced dissymmetry intensity can be flexibly adjusted by controlling the temperature for fabricating the films and/or the recycling casting times. This study reveals that weak intermolecular interactions can enantioselectively drive racemic helices to be far from the original equilibrium state, thereby resulting in the generation of helical chirality that can be further amplified and maintained in solid films. To demonstrate the utility of the as-obtained chiroptical films, circularly polarized luminescence (CPL) has been achieved by judiciously combining an achiral fluorescent source with the casting films. The finding of symmetry breaking at the macromolecular level can provide useful insights into the understanding of natural homochirality and the design of chiral functional materials.
研究领域:
化学
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材料科学
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生物学
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DOI
高影响因子
ACS Nano
·
2021
·
IF 15.881
Ming Hu,Feng-Ying Ye,Cong Du,Weizhou Wang,Ting-Ting Zhou,Miao-Li Gao,Minghua Liu,Yan-Song Zheng
Tetraphenylethylene and its derivatives are a class of aggregation-induced emission (AIE) compounds that are most extensively and successfully studied. It has been found that the simplest TPE is easy to crystallize into homochiral M crystals or P crystals. However, no research on circularly polarized luminescence (CPL) of TPE solid is documented. In this paper, we report that TPE can grow into big and nonefflorescent single crystals in single helical conformation and has large birefringence that is comparative with commercially available products. The TPE single crystals can emit strong CPL with a very high glum value up to 0.53. Moreover, the sense and magnitude of CPL signals can be willfully tuned by simple rotation of the single crystal due to anisotropy of the crystals. This simple and promising CPL photonic material integrates emission, chirality, and birefringence together in one single crystal without needing an additional chiral dopant or conjugate polymer that can produce linearly polarized light. After being ground into fine powder and pressed as KBr pellets, the obtained nanocrystals of TPE also emit strong CPL light. Exceptionally, by mixing other achiral luminescent dyes together with TPE powder in KBr pellets, induced CPL signals were obtained, which could give full-color CPL emission. Although there were no interactions between TPE and the dyes in the pellets, induced CPL signals were realized through radiative energy transfer, providing a very simple method for the tuning of CPL emission.
研究领域:
材料科学
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光学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Jiangbo Guo,Yajuan Li,Yajun Zhang,Jujie Ren,Xudong Yu,Xinhua Cao
Coordination-driven self-assembly with controllable properties has attracted increasing interest because of its potential in biological events and material science. Herein, we report on the remote, instant, and switchable control of competitive coordination interactions via ultrasound and heat stimuli in a hydrogel network. Configurational coordination changes result in the transformation of blue-emissive and opaque Al3+–amide aggregations to yellow–green-emissive and transparent Al3+–terpyridine aggregations. Interestingly, circularly polarized luminescence “off–on” switches of the metallo-supramolecular assembly are also created by these configuration changes. Additionally, the impact of the stoichiometric ratio of Al3+ and LysTPY on the assembly is also studied in detail. With a higher content of Al3+, the hydrogel with branched and abundant junctions exhibited robust, self-healing, and self-supporting properties. This in-depth understanding of the coordination interaction adjustment will afford new insights into the preparation of stimuli-responsive metallogels.
研究领域:
材料科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
Science China-Chemistry
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2025
·
IF 9.7
Fan Huahua,Wang Runjia,Zhang Li,Liu Minghua
The G-quartet, a hydrogen-bonded macrocycle formed by cation-templated assembly of guanosine derivative, plays a vital role in areas ranging from structural biology to supramolecular chemistry and nanotechnology. Herein, we show a zinc-terpyridine derivative (Ftpy) that could form complex with various guanosine phosphates, exhibiting relatively weak circularly polarized luminescence CPL (dissymmetry factor, g lum ≈ 1 × 10 −3 ). Interestingly, when Ag + ions are involved, significantly boosted circularly polarized luminescence (CPL) is obtained in the assemblies of Ftpy with GTP, which the g lum can reach to 0.15. In contrast, no significant difference is observed in the presence of other cations (Na + , K + , Rb + , NH 4 + , Cu 2+ , and Sr 2+ ). It reveals that CPL signal is amplified due to the formation of G-quartet in the presence of Ag + ions, which further hierarchically self-associate into helically stacked supramolecular aggregates with the cooperation and π - π of Ftpy, contributing to the expression of chirality information. Furthermore, the co-assemblies of Ftpy/GTP/Ag + exhibit an enantioselective recognition of enantiomeric penicillamine by CPL spectra. This work provides a straightforward avenue to fabricate supramolecular assemblies with strong CPL based on G-quartet formation.
研究领域:
超分子化学
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纳米技术
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结构生物学
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DOI
高影响因子
Nanoscale
·
2024
·
IF 5.8
Dong Wang,Zhiwei Zhang,Xuetao Yan,Tianliang Li,Yingying Chen,Zhenzhen Li,Lingyan Feng
Circularly polarized luminescence (CPL) is a fascinating luminescence phenomenon that has garnered significant research attention for chiroptical applications. In this study, we developed a highly sensitive chiroptical sensor by co-assembling G-quartet nanofibers and nonchiral nitrogen sulfur-doped carbon dots (N–S-CDs) for dual ion detection. The N–S-CDs were synthesized using the one-step microwave method, and a helical G-quartet-based nanofiber structure (g-fiber) was simultaneously formed from guanosine 5′-monophosphate (GMP) in the presence of Sr2+. An adjustable helical G-quartet-based nanofiber provided an optimal chiral environment for CPL emission, with a dissymmetry factor (glum) reaching ±0.02. Notably, the left-handed (L-) and right-handed (R-) helical chirality of the complex was determined by switching between kinetic trap states and thermodynamic equilibrium during the reaction process. An optimized CPL sensor was developed based on chiral CDs/g-fiber composite materials, utilizing sensitive CPL as the signal output of dual detection for Hg2+ and I−. Similar limits of detection (LODs) were achieved for both L-/R-nanocomposites, with the best results being 83.5 nM for Hg2+ and 142.8 nM for I−. These values are comparable with or even better than those obtained with other optical analytical methods. Since CPL biosensors are relatively rare to date, our work presents a new horizon for the application of chiral CPL composites in biological assays.
研究领域:
分析化学
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材料科学
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生物传感
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2023
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IF 6
Nan Zhou,Hua Yan,Peibai Wei,Hongyu Guo,Fafu Yang
Although some AIE-based CPL materials had been presented, the design and synthesis novel AIE-based CPL materials and studies on the relationship of structure–property were still a challenging work. Herein, series of novel 1,4-bis(β-cyanostyryl)benzene derivatives 2a , 2b and 2c bearing chiral alkyl chains were prepared, and the influence of length of alkyl chains on CPL properties were investigated for the first time. Samples 2a , 2b and 2c were synthesized by simple procedure with 83–88 % yields. Samples 2b and 2c with longer chains displayed the typical liquid crystalline properties. All of them showed strong fluorescence in both solution and aggregated states. Their chiroptical properties of CD and CPL signals were influenced strongly by the molecular stacking in various states. The self-assembly in mesophase resulted in the best chiroptical properties. The longer alkyl chains contributed to stronger CD and CPL signals. The highest g lum value attained 1.6 × 10 -2 for sample 2c based on the effective chirality transfer and amplification of liquid-crystalline mesophase.
研究领域:
材料科学
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光学
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DOI
高影响因子
Advanced Optical Materials
·
2024
·Vol. 12
·期 20
·2400379
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IF 8
Huimin Duan,Jinbiao Zhao,Shuli Li,Dongming Qi,Jiawei Li
Supramolecular polymers with circularly polarized luminescence (CPL) have promoted future intelligence development of polymer-based materials for flexible display. However, preparing polymer-based CPL materials with simultaneous enhanced luminescence dissymmetry factor (| g lum |) and mechanical performance for industrial applications remains challenging. This work develops an eco-friendly preparation method for preparing CPL elastomers from supramolecular polyurethanes bearing chiral fluorescent S (or R)-1,1′-Bi(2-naphthol) (BINOL) groups in a solvent-free system. Surprisingly, a polymer system containing 0.0028 mol% of chiral BINOL unit is sufficient to emit the significant CPL-activity with a | g lum | value of 2.30 × 10 −2 , appear a good mechanical toughness of 56.28 ± 3.9 MJ·m −3 , thereby exhibit multiple flexible anti-counterfeiting behaviors. The long-range ordered microphase arrangement in polyurethanes is the key to improving both mechanical properties and | g lum |. This is attributed to in-situ additive polymerization of BINOL-based isocyanate prepolymer and macromolecular polyols induced helical supramolecular structure, afforded solid-state films with flexibility and chiral amplification. Furthermore, these results from Circular dichroism, CPL, Fourier transform infrared, X-ray diffraction analyses, and atomic force microscope confirm the formation of long-range ordered microphase arrangement through the synergistic effect of hydrogen bonding and π–π interactions. This work offers significant insights into the construction of CPL elastomers for developing novel flexible display materials.
研究领域:
材料科学
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光学
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高分子化学
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产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 9
·1453
·
IF 5.719
Chen Wang,Luyao Feng,Junxiao Liu,Jing Fu,Jinglin Shen,Wei Qi
Au nanocluster (AuNCs)-based luminescent functional materials have attracted the interest of researchers owing to their small size, tractable surface modification, phosphorescence lifetime and biocompatibility. However, the poor luminescence quantum yield (QY) of AuNCs limits their practical applications. Herein, we synthesized a type of AuNCs modified by 4,6-diamino-2-mercaptopyrimidine hydrate (DPT-AuNCs). Furthermore, organic acids, i.e., citric acid (CA) and tartaric acid (TA), were chosen for co-assembly with DPT-AuNCs to produce AuNCs-based luminescent materials with enhanced emission. Firstly, it was found that CA could significantly enhance the emission of DPT−AuNCs with the formation of red emission nanofibers (QY = 17.31%), which showed a potential for usage in I−detection. Then···π/π···π interaction between the CA and the DPT ligand was proposed as crucial for the emission. Moreover, chiral TA could not only improve the emission of DPT-AuNCs, but could also transfer its chirality to DPT-AuNCs and induce the formation of circularly polarized luminescence (CPL)-active nanofibers. It was demonstrated that the CPL signal could increase 4.6-fold in a ternary CA/TA/DPT-AuNCs co-assembly system. This work provides a convenient way to build AuNCs-based luminescent materials as probes, and opens a new avenue for building CPL-active materials by achiral NCs through a co-assembly strategy.
研究领域:
材料科学
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光学
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生物医学工程
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DOI
高影响因子
Journal of Physical Chemistry C
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2021
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IF 4.126
Yiran Xia,Hongdong Duan,Aiyou Hao,Pengyao Xing
Dynamic control of supramolecular chirality and chiroptical properties is a challenging task and has great significance in the preparation of responsive and intelligent functional materials. Here, we report the dynamic evolution of supramolecular chirality and the corresponding chiroptical properties via multicomponent coassembly driven by intermolecular hydrogen bonds. Stilbene conjugated with amino acids can self-assemble into chiral nanostructures with chiroptical activities including circular dichroism and circularly polarized luminescence (CPL). After coassembly with melamine (Mm), a macroscopic nanohelix was observed in assemblies. This evolution process is accompanied by variations in Cotton effects and CPL properties depending on the amino acid domains. The photoresponsiveness of the isomerization reaction was successfully achieved due to the existence of the stilbene structure, where the fluorescence changes can be applied to fluorescent carving. This work illustrates the dynamic chirality evolution and response, providing a simple method for the design and manufacture of smart chiroptical materials.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
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