Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 30
·15797-15807
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IF 8.867
Dan Zhao,Xiao-Hui Liu,Yue Zhao,Peng Wang,Yi Liu,Mohammad Azam,Saud I. Al-Resayes,Yi Lu,Wei-Yin Sun
Excess and deficiency of iron(III) and antibiotics from normal permissible limits will induce serious disorders, so their detection is important but challenging. In this work, by introducing a new amino triazole ligand N1-(4-(1H-1,2,4-triazole-1-yl)benzyl)-N1-(2-aminoethyl)ethane-1,2-diamine (L), a series of Cd(II)-based metal–organic frameworks (MOFs) [Cd3(BDC)3(DMF)2] (1), [Cd(L)(BDC)]2·2DMF·H2O (2), [NaCd2(L)(BDC)2.5]·9H2O (3), [Cd2(L)(2,6-NDC)2]·DMF·5H2O (4) and [Cd2(L)(BPDC)2]·DMF·9H2O (5) were synthesized. MOFs 1, 2 and 3 obtained under the same conditions with the same auxiliary ligand (H2BDC) but different amounts of alkali (NaOH) show distinct 3D, 1D and 3D framework structures, respectively, in which L and BDC2− exhibit varied coordination modes. 4 and 5 with 3D structures were isolated by using longer auxiliary ligands of 2,6-H2NDC and H2BPDC. The porosity and excellent fluorescence performance of 3, 4 and 5 make them potential luminescent sensors for Fe(III) and antibiotics. The results show that 3, 4 and 5 represent high sensitivity for the detection of Fe(III) ions with detection limits of 155 ppb for 3, 209 ppb for 4 and 297 ppb for 5 due to the existence of open channels and chelating NH2 sites. In addition, the strong emissions of 3, 4 and 5 can be quenched efficiently by trace amounts of NFs (nitrofurazone, NZF; nitrofurantoin, NFT; furazolidone, FZD) antibiotics even in the presence of other competing antibiotics such as β-lactams (penicillin, PCL). They are responsive to NZF with detection limits of 162 ppb for 3, 75 ppb for 4 and 60 ppb for 5.
研究领域:
化学
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材料科学
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分析化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2018
·
IF 5.091
Changjian Li,Yueqi Wang,Xiaojie Zhang,Xueling Guo,Xiaoxuan Kang,Libo Du,Yang Liu
Carbon dots have attracted considerable attention in the field of biosensors and bioimaging because of their excellent optical performance and low toxicity. However, the cellular uptake of the reported carbon dots generally has a low efficiency, which limits their practical applications. In this study, we reported a novel red fluorescent sulfur and nitrogen co-doped carbon dots with small molecular phenylboronic acid tags (i.e. S, N-CDs-PBA). The S, N-CDs-PBA can be taken up rapidly by PC12 cells in twenty minutes and showed high sensitivity for the detection of Fe 3+ ions. The maximum emission wavelength is at 593 nm under the excitation of 550 nm. The absolute fluorescence quantum yield is 23% in water. The fluorescence can be effectively and selectively quenched by Fe 3+ ions and the linear response range of Fe 3+ ions was obtained from 0.3 µM to 5.0 µM with a detection limit as low as 0.1 µM. It could be concluded that the rapid uptake of S, N-CDs-PBA into cells and high photoluminescence quantum yield of red emission are beneficial for quick detection of Fe 3+ ions.
研究领域:
生物传感器
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生物成像
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分析化学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
TALANTA
·
2018
·
IF 4.244
Hao Zhang,Chen Nie,Jiahui Wang,Ruifang Guan,Duxia Cao
Organic-inorganic hybrid fluorescent microspheres (OI-FMs) without typical fluorophores were prepared. Fluorescence quantum yield of OI-FMs is up to 70.0% after being heated in an oven at 120 °C (named as OI-FMs-120). Interestingly, OI-FMs-120 shows different detection performances in different solvents. It can be used for qualitative and quantitative detection of Fe 3 + with a detection limit of 37.8 nM in absolute ethanol. While in aqueous solution, it can be applied as an ON-OFF-ON fluorescent probe . Fluorescence of the probe is quenched by Hg 2 + and later recovered by biothiols. The detection limit is as low as 34.9 nM for Hg 2 + , 91.0 nM for Cys, 0.12 μM for Hcy and 0.13 μM for GSH in aqueous medium, respectively.
研究领域:
分析化学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Lingyu Song,Yongbao Zhu,Jinfeng Wang,Tingxia Wu,Shuo Zhou,Xianbo Zhang,Junping Tang,Jikui Wang,Donghai Lin,Guosong Chen
The iron ion in industrial circulating cooling water is an important indicator for early warning of equipment corrosion and control level. It is interesting to construct an upconversion luminescence iron ion nanoprobe with a common inorganic phosphate water treatment agent. Herein, inorganic phosphate sodium hexametaphosphate (SHMP) was used to regulate the morphology and functionalization of NaYF 4 :Yb 3+ , Er 3+ upconversion luminescent nanoprobe (UCNPs) and applied to fluorometric detection of trace Fe(III) in water based on the fluorescence quenching which is caused by the selective coordination between hexametaphosphate on the surface of UCNPs and Fe(III). The structure, morphology, and luminous intensity of UCNPs were regulated by disodium hydrogen phosphate (ADSP), sodium tripolyphosphate (STPP) and sodium hexametaphosphate(SHMP). The UCNPs functionalized with SHMP has high sensitivity and selectivity for Fe(III) detection. The linear range and detection limit are 1.0–50 μM and 0.2 μM, respectively. The method has satisfactory results for the detection of trace Fe(III) in industrial circulating cooling water.
研究领域:
材料科学
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分析化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Meizhu Chen,Jia An,Yongqin Hu,Rubing Chen,Ying Lyu,Nan Hu,Mengfei Luo,Mengdi Yuan,Yufei Liu
Perovskite materials have shown great potential in various fields, such as photovoltaic devices, biomedical applications, and fluorescent probes. However, their hypersensitivity has significantly limited their practical application. In this paper, a modified swelling-shrinking strategy was adopted to encapsulate CsPbBr 3 perovskite quantum dots into poly(styrene/acrylamide) nanospheres, in order to create novel hyperstatic and hydrophilic perovskite polymer fluorescent beads. The results show that the fluorescence characteristics did not noticeably change when the polymer materials were dispersed in an aqueous solution over 12 months. Under harsher conditions (acid, alkali, PBS, DMEM, temperature), the novel perovskite polymers showed unprecedented fluorescence stability, which was then applied to the selective sensing of Fe(III) in real samples. The results show that a good linear relationship between 5 and 150 μM was obtained under optimal conditions, and the limit of detection was approximately 2.2 μM. Furthermore, the Fe(III)-sensing applications in Yangtze River water, human serum and tea water has been proven with satisfying results.
研究领域:
材料科学
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生物医学工程
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环境监测
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产品关联
DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Yushu Han,Rui Bao,Jianhong Yi,Hongdong Li,Liang Liu,Shuyu Huang,Zhaojie Li,Wenfu Zhang,Deqi Min
Carbonized polymer dots (CPDs) have drawn a lot of attention in the past ten years because of their excellent selectivity and sensitivity. In this study, tungsten was doped into CPDs (W-CPDs) using a simple hydrothermal technique for the first time. With an excitation/emission maximum of 365/455 nm and excitation-independent emission, W-CPDs exhibit blue fluorescence and have an average particle diameter of 2.33 nm. Because of the dynamic quenching between Fe (III) and W-CPDs, there is a good linear relationship between the Fe (III) concentration and the limit of detection (LOD) of 0.012 μM for W-CPD fluorescence intensity. The intensity of the W-CPDs fluorescence is also found to be linearly correlated with pH values between 5.0 and 10.0. This technique enables quick detection of Fe (III) in drinking water and is expected to lower the risk of Fe (III) ingestion by humans. In addition, the creation of fluorescent flexible devices and information encryption are fascinating applications for W-CPDs.
研究领域:
材料科学
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分析化学
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环境科学
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纳米技术
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产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 26
·7741-7751
·
IF 4.478
Liu Yuqian,Hu Xianyun,Liang Fangyuan,Cao Yajing
Exploring sensors based on Förster resonance energy transfer (FRET) systems enables the continuous development of biological sensing technologies. Herein, we report the construction of a FRET sensor with dual-emissive quantum dots (QDs) and meso -tetra(4-sulfonatophenyl) porphine (TSPP). The sensor is composed of mesial green-emissive QDs with a thick silica shell (gQD@SiO 2 ) and circumjacent blue-emissive QDs coated with ultra-thin silica spacer, on which is linked TSPP (bQD@SiO 2 -TSPP). The gQD@SiO 2 endows the sensor with a fluorescent background. Due to the ultra-thin silica spacing, coupled with the superior resonance effect of bQD fluorescence and the Soret-band absorption of TSPP, the FRET efficiency is highly sensitive to the chelation state of TSPP. Relying on the absorbance transition of TSPP complexed with Fe(III), the FRET sensor is applied for ultra-sensitive Fe(III) detection. In aqueous solution, the sensor is demonstrated to linearly detect Fe(III) in the range of 0–1 μM, with a limit of detection (LOD) of 40 nM. More importantly, reliable Fe(III) detection can be achieved via the specific complexation of Fe(III) by TSPP and the ratiometric fluorescent response. As such, the inter-/intra-day precisions in standard samples, as well as the recovery rate in biological matrices, are fully validated. The excellent analytical performance, in combination with the excellent biocompatibility of the FRET sensor, allows semi-quantitative Fe(III) imaging in living cells. Graphical abstract
研究领域:
分析化学
·
纳米技术
·
生物传感
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）