Nanoscale
·
2018
·Vol. 10
·期 41
·19586-19594
·
IF 7.233
Jia Liu,Kai Chen,Gui-Ming Pan,Zhi-Jun Luo,Ying Xie,Ying-Ying Li,Yong-Jie Lin,Zhong-Hua Hao,Li Zhou,Si-Jing Ding,Qu-Quan Wang
In this study, we synthesized CdS/(Au–ReS2) nanospheres that have highly efficient photocatalytic hydrogen production activity induced by dielectric–plasmon hybrid antenna resonance. As the diameter (D) of ReS2 nanospheres consisting of 2D nanosheets increases from 114 ± 11 to 218 ± 25 nm, the resonance wavelength of the ReS2 dielectric antenna is tuned from 380 to 620 nm and the hydrogen production rate for the CdS/(Au–ReS2) nanospheres increases by more than 1.85 times and reaches a value as high as 3060 μmol g−1 h−1, with a 9% weight percentage of Au. Due to the enhancements of the local electromagnetic field and excitation energy transfer by the ReS2–Au dielectric–plasmon hybrid antenna, the hydrogen production rate for the CdS/(Au–ReS2) nanospheres (D = 218 ± 25 nm) is 797, 319, 105 and 12 times larger than that for pure ReS2, Au–ReS2, CdS, and CdS–ReS2, respectively. Additionally, the persistence and reusability measurements indicate a favorable stability of CdS/(Au–ReS2). These results provide a strategy to prepare a new class of dielectric–plasmon hybrid antennas consisting of 2D materials and metal nanoparticles, which have promise in applications ranging from photocatalysis to nonlinear optics.
研究领域:
材料科学
·
光催化
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Jialong Pang,Yali Liu,Chuanfang Zhao,Jiawen Li,Mengting Ran,Baiyi Zu,Xincun Dou
The structural modification of metal–organic frameworks (MOFs) is of vital importance in many fields, especially in sensing with enhanced performance, while the efficient synthesis of functionalized MOF nanoparticles toward small molecule detection remains challenging. Here, a general cellulose nanofibril (CNF)-induced in situ one-step strategy was proposed for the synthesis of dual-ligand-functionalized europium-based MOF (EuMOF@CNF) nanoparticles under an effective regulation of the crystallization kinetics in hydrothermal synthesis. Based on the unique dual-ligand structure, the obtained EuMOF featured a tunable antenna effect and laid a good foundation for fluorescence-sensing materials. Benefiting from the superior self-assembly properties of CNFs and the tunable antenna effect of EuMOF@CNF, flexible sensing films were constructed, showing excellent mechanical properties (72 MPa for stress and 3.8% for strain) and tunable luminescence properties and achieving instant (1 s) and sensitive fluorescence sensing of sarin analogue vapor with a significantly low limit of detection (LOD, 2.8 ppb) and robust selectivity against a wide range of common interferents (>14 types), especially independent of common acids. We believe that this pioneering design of EuMOF with tunable antenna effects would positively advance the development of high-performance MOF-based fluorescent materials and devices.
研究领域:
材料科学
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化学传感器
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纳米技术
✓ 已验证
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DOI
PubMed
高影响因子
TALANTA
·
2019
·
IF 4.916
Shengnan Wang,Xu Chu,Xiaoyan Xiang,Yan Cao
This study focused on the fluorescence antenna-sensitizing effect of graphene quantum dots (GQDs) in a case on the detection of terbium ions. A simple one-step chemical oxidation method was applied for the preparation of GQDs starting from the regular multilayer graphene oxide (GO) via the refluxing in a concentrated mixture of strong acids. The as-prepared GQDs were further evaluated as a fluorescent sensitizer to the terbium ion. An expanded in-deep mechanism study on the fluorescence phenomena during the interaction of the as-prepared GQDs and REEs was made. The highly selective antenna effect of GQDs on one of REEs’ aqueous media, which was terbium (III), was identified. The excited terbium ion emitted its long-living fluorescence based on its own characteristic line-typed f-f transition, contrasting to a undetectable fluorescence in a very poor quantum yield in its aqueous solution induced by water collisions. This study, in the first place, identified the significant sensitization effect of the as-prepared GQDs on the terbium ion in a high selectivity in aqueous media. The detectable linear range and the detection limit of the terbium ion was 0–30 × 10 −6 mol L −1 (R 2 = 0.9960) of 0.3 × 10 −6 mol L −1 , respectively. The excitation wavelength and the optimal fluorescence wavelength were 230 nm 546 nm, respectively. Further material characterizations, involving XPS, FTIR, Raman and the Zeta potential , verified the important participation of carboxyl function groups on the as-prepared GQDs.
研究领域:
材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 17
·4877-4884
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IF 4.478
Deng Hao-Hua,Yang Hui-Jing,Huang Kai-Yuan,Zheng Yi-Jing,Xu Ying-Ying,Peng Hua-Ping,Liu Yin-Huan,Chen Wei,Hong Guo-Lin
As a kind of sensing and imaging fluorescent probe with the merit of low toxicity, good stability, and environment-friendly, silicon nanoparticles (SiNPs) are currently attracting extensive research. In this work, we obtained mitoxantrone-SiNPs (MXT-SiNPs) with green emission by one-pot synthesis under mild temperature condition. The antenna based on pyridoxal phosphate (PLP) was designed for light-harvesting to enhance the luminescence of MXT-SiNPs and to establish a novel sensing strategy for alkaline phosphatase (ALP). PLP transfers the absorbed photon energy to MXT-SiNPs by forming Schiff base. When PLP is dephosphorized by ALP, the released free hydroxyl group reacts with aldehyde group to form internal hemiacetal, which leads to the failure of Schiff base formation. Based on the relationship between antenna formation ability and PLP hydrolysis degree, the activity of ALP can be measured. A good linear relationship was obtained from 0.2 to 3.0 U/L, with a limit of detection of 0.06 U/L. Furthermore, the sensing platform was successfully used to detect ALP in human serum with recovery of 97.6–106.2%. The rational design of antenna elements for fluorescent nanomaterials can not only provide a new pathway to manipulate the luminescence, but also provide a new direction for fluorescence sensing strategy.
研究领域:
生物化学
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医学检测
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纳米材料科学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2023
·
IF 4.4
Mi Yuan,Mingxuan Li,Pengchen Su,Long Yu,Yunfei Lu,Mingtai Sun,Chao Yuan,Mingshun Li,Suhua Wang
Development of accurate and efficient TCs residue analysis methods is of great significance for the protection of environment, food safety and public health. Herein, a dual-responsive ratiometric fluorescence sensor being capable of simple and sensitive detection of tetracycline (TC) was presented, which was constructed by immobilizing europium ions (Eu 3+ ) onto the mercaptopropionic acid stabilized copper nanoclusters (MPA-Cu NCs). In the presence of TC, the red fluorescence of Eu 3+ was enhanced through antenna effect (AE), while the green fluorescence of MPA-Cu NCs was quenched through internal filter effect (IFE), leading to an obvious fluorescence color evolution from green to red for the probe solution. In addition to successful design of a smartphone-assisted colorimetric analysis platform for portable detection, a logic gate device capable of intelligently monitoring TC concentration is also designed.
研究领域:
环境科学
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食品安全
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生物分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Huifang Wu,Shiying Ju,Yuwei Ling,Haozhe Sun,Yanfeng Tang,Changlun Tong
Aggregation-induced emission (AIE) and antenna effect (AE) are two significant behaviors that have attracted increasing attention. However, it is challenging to achieve the synergistic effect of AIE and AE in luminescent materials for more extensive applications. Here, four gelatinous Ln 3+ coordination polymers (Ln-CPs) are synthesized by self-assembly of ciprofloxacin (CIP), adenosine monophosphate (AMP), and Ln 3+ ions in aqueous medium. Encouragingly, a remarkable increase in the characteristic fluorescence of Ln 3+ and a significant decrease in CIP are observed along with increasing concentration of Ln-CPs, which is attributed to the large aggregates formed by self-assembly that strictly constrain the intramolecular motions of antenna ligands, thereby achieving the aggregation-enhanced AE. More meaningfully, Eu-CP not only shows a rice-like morphology at high aggregation state, but also provides an opportunity for the selective detection of alkaline phosphatase (ALP). A new flower-like polymer is formed upon incubating Eu-CP with ALP, accompanied by the fluorescence quenching of Eu 3+ and recovery of CIP, a ratiometric determination of ALP in the range of 0.1–6.0 U·L −1 is thus achieved. Additionally, ALP assay in human serum and bioimaging in living cells have been successfully performed. This research opens a new horizon for the fabrication of Ln 3+ -based luminescent materials with promising applications.
研究领域:
化学
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生物医学
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材料科学
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产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Zhuoyuan Li,Yulin Wang,Jinting Chen,Li Zhang,Yongbiao Hua,Donglan Huang,Huishi Guo,Xiuzhen Qiu
Tetracycline (TC) is a typical emerging pharmaceuticals and personal care products (PPCPs) pollutants in the environment. However, TC residues cause severe effects on human health. It is crucial to exploit simple, rapid and sensitive methods to detect TC in water samples. A ratiometric fluorescent probes (CDs-Eu 3+ ) is constructed using carbon dots (CDs) and europium ions (Eu 3+ ) for the visual detection of tetracycline (TC). Under 390 nm excitation, CDs-Eu 3+ shows a strong yellow fluorescence at 545 nm and a weak red fluorescence at 619 nm, respectively. In the presence of TC, the fluorescence intensity at 545 nm decreased while the fluorescence intensity at 619 nm increased, which attributed to the internal filtering effect (IFE) and “antenna effect”, respectively. Sensing performance of CDs-Eu 3+ probes is further evaluated with respect to various conditions, including salt concentration, Eu 3+ concentration, pH, and reaction time. Results reveal that the proposed ratiometric fluorescent probes exhibits a specific recognition ability toward TC. An excellent linear relationship is observed between the fluorescence intensity ratio (F 619 /F 545 ) and TC concentrations (1⁓100 μM), with a low detection limit (LOD) of 31 nM. The solution (CDs-Eu 3+ -TC) color gradually changes from yellow to red after adding TC. The probes are successfully applied to determine TC in water with recoveries of 85.43⁓97.53%. Finally, a fluorescent test strip is prepared and used for rapid visual semi-quantitative TC detection.
研究领域:
环境科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 23
·8362-8373
·
IF 8.307
Xiaolu Zhuo,Shasha Li,Nannan Li,Xizhe Cheng,Yunhe Lai,Jianfang Wang
Optical antenna effects endow plasmonic nanoparticles with the capability to enhance and control various types of light–matter interaction. Most reported plasmonic systems can be regarded as single-channel nanoantennas, which rely only on a bright dipole plasmon mode for energy exchange between near- and far-field. Herein we demonstrate a dual-channel plasmonic system that can separate the excitation and emission processes into two energy exchange pathways mediated by the different plasmon modes, offering a higher degree of freedom for the manipulation of light–matter interaction. Our system, consisting of high-aspect-ratio Ag nanorods and Si substrates, can support a series of bright and dark plasmon modes with distinct near- and far-field properties and generate relatively intensive local field enhancement in the gap region. As a proof-of-principle, we take plasmon-enhanced fluorescence of dye molecules as an example to reveal the energy exchange mechanism in the dual-channel plasmonic system. Such a system is potentially also useful for manipulating other types of light–matter interaction. Our work represents a step toward the utilization of a broader class of plasmon resonance for the development of optical antennas and various on-chip nanophotonic components.
研究领域:
纳米光学
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材料科学
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物理化学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2012
·Vol. 4
·期 18
·5619-5626
·
IF 5.914
Suwen Li,Xiao Zhang,Zhiyao Hou,Ziyong Cheng,Pingan Ma,Jun Lin
Uniform, ultra-small-sized and well-water-dispersible LaF3 nanoparticles doped with trivalent rare earth (RE) ions (Eu3+ or Tb3+) have been synthesized by a simple, low temperature synthesis route. The nanoparticles, with sizes of about 3.2 nm (for those doped with Eu3+) and 3.0 nm (for those doped with Tb3+), are roughly spherical and monodisperse. 1,2,4,5-Benzenetetracarboxylic acid (labeled as BA) as sensitizer has been bonded to the surface of the nanoparticles, which can sensitize the emission of RE3+ in the LaF3 nanoparticles. The BA–LaF3:RE3+ (RE = Eu or Tb) nanoparticles have a broad absorption band in the UV domain, and show enhanced luminescence of RE3+ based on an energy transfer from BA ligands to RE3+ ions (i.e. the so-called “antenna effect”). Due to the dual protection of organic ligands (BA) and inorganic matrices (LaF3), BA–LaF3:RE3+ (RE = Eu or Tb) nanoparticles have longer excited state lifetimes than LaF3:RE3+ (RE = Eu or Tb) nanoparticles as well as lanthanide coordination polymers of BA.
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
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Yulin Wang,Libo Nie,Yongbiao Hua,Liang Gong,Xiuzhen Qiu,Huishi Guo
In this work, a ratiometric fluorometric sensor based on nickel nanoclusters (NiNCs)-europium complex (NiNCs-Eu 3+ ) was constructed for the highly selectivity detection of tetracyclines (TCs) in water samples. In the presence of TCs, the blue fluorescence of the sensor NiNCs-Eu 3+ was quenched at 430 nm and the characteristic red fluorescence of Eu 3+ -TCs appeared at 620 nm because of the combined help of inner filter effect (IFE) and antenna effect. Under the optimized conditions (100 mM Eu 3+ (100 µL); temperature (25℃); reaction time (10 min), HEPES buffer solution (pH = 7.0)), the sensor offered a wide detection range of tetracycline (TC) and oxytetracycline (OTC) from 0.1 to 50 μM with the detection limit (LOD) of 25 nM and 21 nM, respectively. Moreover, the sensor was able to detect of TC and OTC in tap and lake water with high recovery rate (89.10%-97.60%). In addition, the portable paper-based sensor was constructed using filter paper embedded with NiNCs-Eu 3+ . The distinct fluorescent color of the paper-based sensor varied from bright blue to red against different concentrations of TC and OTC. These above findings demonstrated the potential for wide application of as-prepared ratio metric fluorescence sensor for visual detection of TCs in water samples.
研究领域:
分析化学
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环境科学
·
生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2024
·
IF 3.6
Xinyue Qian,Cheng Tan,Jing Zhang,Kang Wu,Anping Deng,Jianguo Li
The “antenna effect” is one of the most important energy transfer modes in lanthanide light-emitting polymers. In this study, novel luminescent nanostructured coordination polymers (Eu–PCP) were synthesized in one step using Eu3+ as the central metal ion and 5,10,15,20-tetrakis (4-carboxyphenyl) porphyrin (TCPP) as the organic ligand. The unique “antenna effect” observed between Eu3+ and TCPP leads to a substantial improvement in the electrochemiluminescence (ECL) emission efficiency. Eu–PCP exhibits good cathodic ECL characteristics. Additionally, Au@SnS2 nanosheets exhibit favorable electrical conductivity, biocompatibility, and a significant specific surface area. This makes them a suitable choice as substrate materials for the modification of electrode surfaces and capturing antigens. Being well known, the development of sensitive and rapid methods to detect chloramphenicol is essential for food safety. Based on this, we report a novel competitive electrochemiluminescence immunoassay to achieve ultra-sensitive and highly specific detection of chloramphenicol. The linear range was 0.0002–500 ng mL−1 and the detection limit was 0.09 pg mL−1. Apart from that, the experimental results proved that it provided a new analytical tool for the detection of antibiotic residues in food safety.
研究领域:
分析化学
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食品科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Xu Chu,Tao Chen,Yan Cao
This paper reports a simple, rapid and sensitive fluorescence sensor for the parallel determination of iron (III) (Fe 3+ ), terbium (III) (Tb 3+ ) and europium (III) (Eu 3+ ) ions using Carbon Dot (CD) serving as a fluorescence probe. The Carbon Dot (CD), which was synthesized via an acid-cutting method using anthracite coal as the carbon source, was found to have rich carboxyl and hydroxyl groups on its surface. The fluorescence of the as-prepared CD can be selectively quenched by the Fe 3+ ion via non-radiative electron-transfer, and furthermore, the as-prepared CD can also sensitize the luminescence of both Tb 3+ and Eu 3+ ions through the antenna effect and enhance the fluorescence of Tb 3+ and Eu 3+ by more than several orders of magnitude. Therefore, the as-prepared CD was applied as a fluorescence probe towards the parallel determination of Fe 3+ , Tb 3+ and Eu 3+ and exhibited detection limits in 0.019, 0.10 and 0.79 μM, respectively. The fluorescence quenching mechanism and energy transfer mechanism were also studied in details.
研究领域:
分析化学
·
环境监测
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纳米材料
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荧光探针
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生物传感
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）