JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2018
·
IF 2.891
Qingming Wang,Shanshan Wu,Yingzi Tan,Yulin Yan,Lei Guo,Xinhui Tang
In present report, a new BDA for Cu 2+ has been disclosed for the first time. The presence of Cu 2+ caused an obvious fluorescence enhancement at 407 nm upon excitation at 360 nm, which could be distinguished by the naked eye under a UV lamp. It was found to have acceptable detection limits (0.12 μM), high selectivity and reversibility/reusability. The photoluminescence measurement indicates that BDA with Cu 2+ presence, showed very strong blue emission bands with CIE chromaticity coordinates (0.1652, 0.0723). Besides, the designed probe has shown potential applications in the area of sample monitoring, photo-printing.
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高影响因子
CRYSTENGCOMM
·
2018
·Vol. 20
·期 28
·4020-4024
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IF 3.304
Xin Huang,Yu Zou,Jian Hao,Jiang Jiang
Uniform ZnSe hollow nanospheres with face-centered cubic structure were synthesized via a post-synthetic chemical transformation reaction from solid Cu2−xSe nanocrystals, with the help of tributylphosphine at room temperature under an ambient atmosphere. The formation of ZnSe hollow structure was based on the synergetic effect of isotropic cation exchange from Cu2−xSe to ZnSe and concurrent selective etching of Cu2−xSe templates through anion extraction. The degree of hollowness could be adjusted by changing the feed molar ratio of Zn/Cu and reaction temperature which determined the extent of cation exchange. These ZnSe hollow nanospheres exhibited excellent catalytic activity and stability for the photodegradation of dyes.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 21
·17478-17485
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IF 3.201
Liying Yu,Yaoyao Qu,Fang Chai,Lihua Chen
The highly luminescent blue fluorescent carbon quantum dots (CQDs) were prepared via the one-step hydrothermal method using L-ascorbic acid (LAA) as a carbon source. The obtained carbon quantum dots (LAA-CQDs) demonstrated high sensitivity and selectivity for detecting Cu2+ and Hg2+ based on the efficient fluorescence quenching effect, with the lowest limits of 7.59 nM and 2.29 nM, respectively. Moreover, LAA-CQDs based paper sensors were fabricated, which showed a clear fluorescence response after being exposed to Cu2+ and Hg2+, with visual detection limits of 5 μM and 3 μM, respectively. The cyclic utilization of the paper sensors was realized by restoring their fluorescence after soaking them in saturated ethylene diamine tetraacetic acid solution. The sensors can be recycled to detect Cu2+ and Hg2+ ions for at least four turns, which was conducive to environmental protection and saving resources. The LAA-CQDs with good environmental applicability have been successfully applied for the detection of Cu2+ and Hg2+ ions in real environmental water samples. In addition, we verified the low toxicity and good biocompatibility of LAA-CQDs via cytotoxicity experiments and cell imaging.
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Nanoscale
·
2017
·Vol. 10
·期 7
·3130-3143
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IF 7.367
Shaohua Zhang,Qian Huang,Lijuan Zhang,Hao Zhang,Yaobao Han,Qiao Sun,Zhenxiang Cheng,Huizhu Qin,Shixue Dou,Zhen Li
The vacancies in the semiconductor nanocrystals not only induce unique properties, but also provide spaces for engineering them with multifunctions by the introduction of other elements. Herein, the vacancy of Cu2−xSe nanoparticles was tuned by doping with magnetic ferric ions (Fe3+) at room temperature, and the position and intensity of the near-infrared localized surface plasmon resonance (LSPR) in the resultant nanostructure can be finely controlled by altering the feeding amount of Fe3+ ions. The results of the density-functional theory (DFT) calculations show that both doping and replacement reactions are favourable. Owing to its tunable near-infrared absorption and magnetic property, the obtained hybrid nanostructure was demonstrated to be a novel nanotheranostic agent for effective deep-tissue photoacoustic imaging, magnetic resonance imaging, and photothermal therapy of cancer.
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PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Zhangchi Xiao,Yong Li,Yulun Nie,Liqiang Lu,Chao Yang
Background Methyl parathion, a potent organophosphorus insecticide, is extensively employed in agriculture and animal husbandry, leading to significant environmental contamination with pesticide residues, posing a grave threat to human health. This compound irreversibly inhibits acetylcholinesterase (AChE) in the human nervous system, resulting in the accumulation of acetylcholine (ACh), which is detrimental. Various enzyme activity-based assays have been explored due to its pathogenic mechanism, yet these methods are fraught with limitations. Thus, the development of a highly selective, sensitive, rapid, and effective method for detecting methyl parathion residues is crucial. Result In this study, we introduce a novel, non-enzymatic fluorescent probe for methyl parathion detection. This probe is designed to specifically trigger the fluorescence signal of TAPB-DMTA-COF through the interaction of copper ions with the imine moiety within the TAPB-DMTA-COF structure. The detection of methyl parathion in aqueous environments is facilitated by the Inner filter effect. Compared to previously reported enzyme-catalyzed reaction probes, this probe exhibits a faster reaction time, is not influenced by enzyme activity, and demonstrates high specificity and sensitivity. The probe exhibits a good linear response in the concentration range of 0.56–5.46 μM, with a detection limit of 30.698 nM. Furthermore, the probe yielded satisfactory recoveries of methyl parathion (93.47 %–99.5 %) in different real water samples through spiking recovery experiments. Significance The fluorescent probe based on Cu 2+ /TAPB-DMTA-COF realizes the fluorescence detection of methyl parathion. The establishment of this simple, efficient, and rapid detection platform offers a new approach for the detection of pesticide residues in aquatic environments. The introduction of metal ions, along with the construction of COF materials and the use of fluorescence signal turn-on, provides a rational design strategy for such detection methods.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2024
·
IF 4
Huanhuan Li,Qiyi Bei,Md. Mehedi Hassan,Murugavelu Marimuthu,Selorm Yao-Say Solomon Adade,Quansheng Chen,Muhammad Zareef
Abuse of tetracycline (TC) leads to the development of drug-resistant bacterial strains that threaten public health. This paper proposed a novel Cu 2+ -modulated UCNPs@RBD sensor for detecting TC. The sensor utilizes rhodamine B derivatives (RBD) that bind to Cu 2+ , forming RBD-Cu through a spirolactam open-loop reaction. The fluorescence of upconversion nanoparticles (UCNPs) is quenched by RBD-Cu via the inner filter effect (IFE). Upon addition of TC, TC-Cu forms due to electron-donor groups in TC, which decreases the generation of RBD-Cu, thereby enhancing the fluorescence of UCNPs . Under optimized conditions, the sensor exhibits remarkable accuracy across a concentration range of 50–50000 µg L −1 , with a limit of detection (LOD) of 1.72 µg L −1 . Moreover, the sensor demonstrates high selectivity for TC, validated by its application in food samples. The relative standard deviation (RSD) in real sample analysis was below 4.17 %, and the results were consistent with the HPLC method ( P > 0.05). Hence, the sensor exhibited a high level of sensitivity and reliability, making it suitable for the detection of TC in food.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
·
IF 11.3
Meiqing Zhu,Xingyu Zhu,Manjie Chen,Xiaohui Pang,Yajun Hong,Yi Wang
Glyphosate is a non-selective herbicide widely used in agriculture, and its overexposure poses significant health and environmental risks. Herein, a novel Cu 2+ -coordinated fluorescent sensing system (HYBC-Cu 2+ system) based on acylhydrazone groups was designed, capable of glyphosate-specific recognition. The HYBC-Cu 2+ system was constructed with simple steps, with the advantages of short recognition time (< 1 min), good specificity, anti-interference, and excellent sensitivity (LOD = 95 nM). The effect of proton functional group on glyphosate resulted in Cu 2+ of the HYBC-Cu 2+ system being able to be competed down by the glyphosate to release HYBC thus inducing the fluorescence enhancement of the system and realizing the rapid detection of glyphosate. The recognition mechanism by the HYBC-Cu 2+ system was verified by high-resolution mass spectrometry (HRMS), density function theory (DFT) calculations and Job's Plot. The system can cycle alternately to detect the glyphosate more than 6 times and effectively quantify trace glyphosate in environmental samples. Furthermore, the HYBC-Cu 2+ system has low cytotoxicity and good membrane permeability, which can enter HeLa cells and zebrafish to react rapidly with exogenous glyphosate, resulting in fluorescence enhancements that are visually distinctive. The application of HYBC-Cu 2+ system can further promote the development of pesticide residue monitoring methods such as glyphosate and provide scientific basis for policy making and public health protection.
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高影响因子
TETRAHEDRON
·
2016
·
IF 2.645
Ronghua Shen,JingJing Yang,Hong Luo,Bingxiang Wang,Yuliang Jiang
A new 1,8-naphthalimide derivative (NAD) was synthesized and employed as a highly sensitive and selective probe for the detection of cysteine (Cys) and Cu 2+ . The terminal olefin of NAD could react with Cys and resulting in fluorescence quenching , with the adding of Cu 2+ , the schiff base unit of NAD could coordinate with Cu 2+ and lead to a highly selective fluorescence “turn-on” response. The detection limits reached as low as 25 nM for Cys and 11 nM for Cu 2+ . In addition, the NAD probe can be further applied to cells imaging owing to its photostability and low cytotoxicity.
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高影响因子
ACS Applied Materials & Interfaces
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2015
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IF 6.723
Jian Sun,Fan Yang,Dan Zhao,Chuanxia Chen,Xiurong Yang
By means of employing 11-mercaptoundecanoic acid (11-MUA) as a reducing agent and protecting ligand, we present straightforward one-pot preparation of fluorescent Ag/Au bimetallic nanoclusters (namely AgAuNCs@11-MUA) from AgNO3 and HAuCl4 in alkaline aqueous solution at room temperature. It is found that the fluorescence of AgAuNCs@11-MUA has been selectively quenched by Cu2+ ions, and the nonfluorescence off-state of the as-prepared AgAuNCs@11-MUA–Cu2+ ensemble can be effectively switched on upon the addition of histidine and cysteine. By incorporating Ni2+ ions and N-ethylmaleimide, this phenomenon is further exploited as an integrated logic gate and a specific fluorescence turn-on assay for selectively and sensitively sensing histidine and cysteine has been designed and established based on the original noncovalent AgAuNCs@11-MUA–Cu2+ ensemble. Under the optimal conditions, histidine and cysteine can be detected in the concentration ranges of 0.25–9 and 0.25–7 μM; besides, the detection limits are found to be 87 and 111 nM (S/N = 3), respectively. Furthermore, we demonstrate that the proposed AgAuNCs@11-MUA-based fluorescent assay can be successfully utilized for biological fluids sample analysis.
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高影响因子
JOURNAL OF POLYMER RESEARCH
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2015
·Vol. 22
·期 3
·1-8
·
IF 1.92
Geng Tong-Mou,Wu Da-Yu,Huang Wei
An acrylic monomer bearing rhodamine 6G group, salicylaldehyde rhodamine 6G hydrazone acrylate (AR6GHS), was synthesized from salicylaldehyde rhodamine 6G hydrazone (R6GHS) and acryloyl chloride in the presence of triethylamine in dry dichloromethane (CH 2 Cl 2 ) at room temperature. The poly(acrylamide- salicylaldehyde rhodamine 6G hydrazone acrylate) (poly(AM-AR6GHS)) was synthesized by a combiation of AR6GHS and a hydrophilic comonomer acrylamide (AM) with 2,2′-azobis(2-methylpropionitrile) (AIBN) as a thermal initiator in tetrahydrofuran (THF). The resultant AR6GHS and poly(AM-AR6GHS) were identified by FTIR and 1 H NMR spectra. The fluorescent characteristic of the poly(AM-AR6GHS) in the aqueous solutions were investigated both in varied pH and in the presence of metal cations. It was found that the copolymeric sensor exhibited “off-on” recognition toward Cu 2+ and Hg 2+ over a wide range of tested metal ions with remarkably enhanced fluorescent intensities. The poly(AM-AR6GHS) had a good linear response between the relative fluorescence intensity and Cu 2+ or Hg 2+ concentration. In addition, upon the addition of Cu 2+ or Hg 2+ into the aqueous solution of poly(AM-AR6GHS), the color changes occurred from colorless to pale pink or pink under visible light, and the emission color of the sensor solution turned from dark to bright greenish yellow or orange yellow under the UV light at 365 nm.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Ji Zhang,Chenguang Yang,Yan Xu
Hierarchical electrochemical sensors with specific recognition function have been widely applied for trace amounts detection of metal ions, showing great significance for monitoring environmental quality. Herein, a novel flower-like ytterbium benzene-1,3,5-tricarboxylate metal-organic framework (Yb-MOF-1) was prepared by a one-step solvothermal method, which was then cast on a glassy carbon electrode to construct a sensing platform. Compared to the traditional rod-like Yb-MOF-2 prepared at a lower pH (pH = 4.26), the Yb-MOF-1 assembled from ultrathin nanosheets has a large surface area (462.356 m²/g), showing simultaneous electrochemical detection performance towards Cd 2+ , Pb 2+ and Cu 2+ in aqueous solution with detection limits of 9.22, 1.69, 15.15 nM, respectively. The experimental results demonstrate its good anti-interference and repeatability. The reliable practical application of Yb-MOF-1 for Cd 2+ , Pb 2+ and Cu 2+ detection in real water samples shows good recovery rates ranging from 95.8 % to 103.5 %, proving the effective strategy in exploring efficient electrochemical sensing materials.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Yujie Zhang,Ning Cai,Yuehan Wang,Hang Wang,Juanqin Xue
Capacitive deionization (CDI) technology holds immense promise for the effective removal of copper ions from solution medium. However, the widespread application of CDI is hindered by limitations arising from the electrode formation process, which impacts the electrode’s mass transfer and adsorption performance. In pursuit of refining the electrode formation process, this study employs a one-step simultaneous electrospinning and electropolymerization method to fabricate PPy/C-HCPs composite electrodes. The results indicate that the fabricated PPy/C-HCPs composite electrode possesses a high specific surface area of 458.98 m2/g, which is 1.83 times that of the electrode prepared using the traditional electrodeposition method (251.26 m2/g). Furthermore, the maximum adsorption capacity for Cu2+ reaches 82.83 mg/g, marking a 2.19-fold enhancement compared to electrodes prepared through the same electrodeposition process (37.81 mg/g). Moreover, even after 1000 repetitive scans, the electrode exhibits exceptional cyclic stability, with only a marginal 1.42% decrease in specific capacitance. This study introduces a streamlined process for the preparation of high-performance electrode materials, providing a foundation for the shaping applications of polypyrrole composite electrode. Additionally, it presents a distinctive approach for the preparation of electrodes for CDI and supercapacitors, offering a unique perspective in the field.
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