Advanced Sustainable Systems
·
2024
·
IF 6.5
Quanxin Duan,Yushan He,Xiang Long,Jiayang Wang,Changjian Ni,Shaogui Wu
Carbon dots (CDs) have emerged as versatile fluorescent nanomaterials for diverse applications. The synthesis of CDs from natural products offers a sustainable alternative to chemical methods. This study presents the preparation of green fluorescent CDs (G-CDs) using seafood mushrooms as the carbon source and 5-amino-2-methylphenol as the nitrogen source through a hydrothermal approach. The G-CDs exhibit maximum excitation/emission peaks at 467/519 nm and a high quantum yield of up to 17.2% in ethanol. Additionally, the G-CDs demonstrate excellent photostability, salt tolerance, and chemical stability. The excitation-independent emissions suggest the presence of unique surface-state luminescent centers. The application of the G-CDs as an anti-counterfeiting fluorescent ink is demonstrated. This work highlights the promise of converting natural food sources into high-performance CDs, expanding their utility across various domains including biomedicine, sensing, and security.
研究领域:
材料科学
·
生物医学
·
食品安全
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Yidan Liang,Menglei Sun,Mao Wang,Haoting Hou,Shujie Pang,Zhe Zhang,Xudong Yang
In this work, a copper nanocluster (His-Cu NCs) with green fluorescence, which uses histidine (His) as the template agent, was developed. This nanomaterial was characterized using methods such as transmission electron microscopy (TEM). Based on this nanocluster, a fluorescence sensing platform was developed for the linear detection of Cr(VI) ions in solution. The surface of His-Cu NCs contains a large number of oxygen-containing and nitrogen-containing functional groups, which can react with Cr(VI), leading to charge transfer between ligands and metal ions, thereby quenching the fluorescence of His-Cu NCs. The sensor exhibits excellent sensitivity and selectivity for detecting Cr(VI), with a 0.31 μM detection limit for Cr(VI). Additionally, a fluorescent filter paper was created to detect Cr(VI). The fluorescence color of the fluorescent filter paper changed from green to blue with the increase in Cr(VI) concentration under the irradiation of a UV lamp at 365 nm. Furthermore, this His-Cu NCs’ fluorescence exhibits good stability, making it possible to employ the NCs as fluorescent ink for writing and drawing anti-counterfeiting icons on paper.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Xia Liu,Lin Yang,Bohan Li,Yan Xu
Copper-based halides have attracted significant attention due to their unique photophysical properties and diverse coordination configurations. However, enhancing water stability and modulating structural transitions in cuprous halide materials remain challenging. In this work, we successfully synthesized three copper(I) halides, (C24H28P)CuBr2 (L1, [C24H28P]+ = hexyltriphenylphosphonium), (C24H28P)2Cu4Br6 (L2), and (C24H28P)2Cu4I6 (L3), via solvent volatilization, demonstrating exceptional water stability even after 27 days of submersion. Crystals L1 and L2 emit yellow and orange light, respectively, under ultraviolet excitation, while L3 emits green light when excited by blue light. A rapid phase transition between L1 and L2 occurs when stimulated with methanol at room temperature. Further exposure of L2 to a NaI solution can result in substitution of Br– ions by I– in [Cu4Br6]2– to form L3. Multimodal anticounterfeiting luminescent labels with high-security levels have been successfully manufactured based on sequential L1 → L2 → L3 phase transition. Moreover, a test paper designed based on L1 can be applied for low-level methanol detection. This work successfully accomplishes the coregulation of structural transformations and luminescence switching in copper(I) halides by combining methanol simulations with halogen substitution strategies, which not only deepens the understanding of the structure–property relationships but also broadens the optical applications of these materials.
研究领域:
材料科学
·
光物理学
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产品关联
DOI
PubMed
高影响因子
Materials Chemistry Frontiers
·
2022
·Vol. 7
·期 1
·168-182
·
IF 8.683
Peiran Huang,Zuhui Wen,Yue Yu,Jingyi Xiao,Zhanhua Wei,Tianshuai Lyu
X-Ray or 254 nm UV-light charged storage phosphors have various promising applications such as in anti-counterfeiting and information storage. However, developing such storage phosphors with high charge carrier storage capacity remains challenging. In this work, photoluminescence spectroscopy, thermoluminescence (TL), and vacuum-referred binding energy (VRBE) diagram were combined to study the trapping and liberation processes of charge carriers in Bi3+ and/or Ln3+ (Ln = Tb, Pr, or Dy) doped LiLuGeO4. Unintended defects act as good electron trapping centers, while Bi3+, Tb3+, and Pr3+ act as hole-capturing and recombination centers. Dy3+ does not act as an electron trapping center but as a luminescence center by energy transfer from Bi3+ → Dy3+. The ratios of the integrated TL intensities between 303 K and 650 K for LiLuGeO4:0.005Bi3+, LiLuGeO4:0.005Bi3+,0.005Tb3+, or LiLuGeO4:0.005Bi3+,0.005Dy3+ after X-ray charging to that of the state-of-the-art BaFBr(I):Eu2+ is about 1.24, 0.59, and 0.90, respectively. More than 10 h or 40 h afterglow was measurable in both LiLuGeO4:0.005Bi3+ and LiLuGeO4:0.005Bi3+,0.005Tb3+ after X-ray or 254 nm UV-light charging. The stored charge carriers stored can be efficiently excited to produce optically stimulated luminescence with a wide range 365 nm UV-light to 850 nm infrared laser beam. Proof-of-concept colour-tailorable afterglow, X-ray irradiation time or sample mass-dependent dosimetry, and optically-stimulated luminescence with a wide range of 365 nm UV-light to 850 nm infrared laser stimulation will be demonstrated for anti-counterfeiting, information storage, and display applications in the developed Bi3+ and/or Ln3+-doped LiLuGeO4. This work not only reports Bi3+ and/or Ln3+ doped LiLuGeO4 storage phosphors with excellent charge carrier storage capacity but also deepens our understanding of the afterglow and storage phosphors and luminescence mechanisms, which can guide us to explore new afterglow and storage phosphors for multimode applications.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2024
·Vol. 27
·期 2
·498-516
·
IF 9.3
Chao Wei,Xuechuan Wang,Shuang Liang,Xiaoliang Zou,Long Xie,Xinhua Liu
The traditional leather industry holds a significant position within the global manufacturing sector, contributing both economically and socially. Relentless multifunctional material-innovation for sustainable leather-manufacture is the only pathway to completely solve the current environmental concerns including widescale discharge of waste and chemicals. Herein, we address these limitations by developing a scalable and sustainable “one-for-all” strategy based on a synthetic multifunctional fluorescent amphoteric polymer (referred to as AADs) through free radical polymerization and amidation grafting reactions achieving a breakthrough leather eco-manufacturing evolution. The resulting AADs effectively integrate the all-round multifunctionalities of tanning, retanning, fatliquoring, regulable color dyeing, and anti-counterfeiting marking into leather. The interfacial multi-point cross-linking of AADs with natural collagen fibers in leather enhances crust-leather with a shrinkage temperature (Ts) exceeding 77 °C and standard-compliant mechanical properties, scratch resistance, and fluorescence for anti-counterfeiting purposes through the creation of distinctive patterns such as barcodes and QR codes. The formative covalent-bonding between the two significantly enhances dye fixation, resulting in leathers with superior durability against rubbing and washing. This innovative process not only reduces the processing time from 1095–2360 min to 500 min and cuts down leather chemical usage by 47.5–74.8%, but also lowers water consumption by 82.6–90% through streamlining multiple primary procedures into a single process. Furthermore, AADs robustly minimize human health risks by 55–71.6% and decrease greenhouse gas emissions by 38.2–52.4% and environmental impacts by 49.3–58.8%, lowering the carbon and environmental footprint of leather production. The innovation of the “one-for-all” process based on emerging multifunctional materials aligns with global sustainability goals, fundamentally aiding the leather industry in transitioning towards more sustainable practices.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 20
·4951-4958
·
IF 5.256
Xiaofeng Sun,Keyang Yin,Baoyong Liu,Shengju Zhou,Jiamei Cao,Geping Zhang,Hongguang Li
Carbon quantum dots (CQDs) have appeared as attractive photoluminescent (PL) materials that overcome the poor photostability of organic dyes and the environmental hazards of heavy metal-containing quantum dots. Engineering CQDs into PL inks that can find applications in anti-counterfeiting and information encryption is promising. However, current methodologies are limited by several disadvantages, including blocking of the writing/printing tools caused by the slow evaporation of the solvent and the aggregation-induced quenching of CQDs in their dry state, when practical applications are concerned. Herein, a new generation of CQD-based PL inks applying room-temperature ionic liquids (RTILs) as the solvent was prepared. The concept presented herein relies on functionalizing the CQDs with the same or similar cationic moieties as those involved in RTILs and facilely obtaining the PL inks through a one-step phase transfer of the as-prepared water-soluble CQDs to the hydrophobic RTILs. The so-obtained CQDs/RTILs inks are highly photoluminescent and compatible with most commonly used writing and templating tools including gel ink pens, brush pens and stamps. Letters or patterns obtained by these PL inks show impressive photostability under various harsh conditions.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiaoxi Li,Yinsheng Xu,Weiwei Li,Ying Ye,Xianghua Zhang,Mengling Xia,Chao Liu,Guangda Niu,Jiang Tang
Laser lighting devices, comprising an ultraviolet (UV) laser chip and a phosphor material, have emerged as a highly efficient approach for generating high-brightness light sources. However, the high power density of laser excitation may exacerbate thermal quenching in conventional polycrystalline or amorphous phosphors, leading to luminous saturation and the eventual failure of the device. Here, for the first time, we raise a single-crystal (SCs) material for laser lighting considering the absence of grain boundaries that scatter electrons and phonons, achieving high thermal conductivity (0.81 W m–1 K–1) and heat-resistance (575 °C). The SCs products exhibit a high photoluminescence quantum yield (89%) as well as excellent stability toward high-power lasers (>12.41 kW/cm2), superior to all previously reported amorphous or polycrystalline matrices. Finally, the laser lighting device was fabricated by assembling the SC with a UV laser chip (50 mW), and the device can maintain its performance even after continuous operation for 4 h. Double perovskite single crystals doped with Yb3+/Er3+ demonstrated multimodal luminescence with the irradiation of 355 and 980 nm lasers, respectively. This characteristic holds significant promise for applications in spectrally tunable laser lighting and multimodal anticounterfeiting.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Hua Zhang,Linlin Xu,Yue Tian,Anxin Jiao,Ming Chen
Optical anticounterfeiting labels based on surface-enhanced Raman scattering (SERS) with enriched molecular “fingerprint” information is not only related to the enhanced sensitive detection but also strongly dependent on excellent long-time stability of nano-platforms. By virtue of in-situ overgrowth of highly dense and close-packed Ag nanoparticles (NPs) on Ti 3 C 2 T x nanosheets, herein, we prepared an extraordinary SERS active nano-substrates with exceptional long-term stability for achieving ultrastable anticounterfeiting tags. The obtained Ag@Ti 3 C 2 T x exhibit a significantly SERS activity with a detection limit of methylene blue (MB) molecules as low at 10 -16 M, approaching 0.1 femtomole (fM) ultra-trace level. More importantly, since nearly all active Ag NPs were completely encapsulated in the 2D supports, the unparalleled stability of the resultant Ag@Ti 3 C 2 T x can be undoubtedly verified by immersing them into H 2 O 2 oxidative solution, which is obviously better than that of bare Ag NPs. Then, the hybrid Ag@Ti 3 C 2 T x were subsequently incorporated into polydimethylsiloxane (PDMS) to obtain transparent flexible Ag@Ti 3 C 2 T x @PDMS, giving rise to the ultra-sensitive SERS imaging-based steganographic information. Interestingly, the ultrastable anticounterfeiting capability of the smart SERS nano-platforms is further highlighted by keeping them even after for 400 days storage. The present work holds a great potential for propelling robust SERS-based steganography in many practical real-world scenarios.
研究领域:
材料科学
·
光学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 19
·7633-7640
·
IF 8.067
Haifeng Sha,Bing Yan
As the basic units of proteins, the importance of amino acids in organisms is self-evident and therefore detection of the concentration of amino acids is significant in monitoring human health. Herein, a dual-responsive Eu3+-functionalized metal–organic framework (MOFs) luminescent film (1@SA) was designed and prepared, which not only realizes the simultaneous detection of aspartic acid (Asp) and arginine (Arg) but also has the possibility of being applied in anti-counterfeiting. A portable film sensor is obtained through the cross-linking and solidification of Eu3+ ions and sodium alginate (SA) hydrogel containing uniformly dispersed MOFs. The MOF used in this work is a zinc metal–organic framework (ZnMOF) comprising uncoordinated carboxyl groups that can provide binding sites for Eu3+ ions. Moreover, it is found that the sensor shows unique fluorescence changes under the stimulation of an acidic environment. Therefore, the quantitative detection of Asp and Arg by 1@SA can be achieved, and optical anti-counterfeiting platforms are also designed according to the diversity of fluorescence changes. The new strategy proposed in this work may broaden the scope of lanthanide fluorescence films used in optical fields.
研究领域:
生物传感
·
光学材料
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）