SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2023
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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
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2019
·Vol. 645
·期 21
·1240-1246
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IF 1.337
Lu Yuan,Ming Kang,Guanjun Chang,Xiangmeng Lv,Simin Shen,Rong Sun
Due to the unique size effects, nanomaterials in infrared absorption have attracted much attention for their strong absorption in the infrared region. To achieve the infrared multi-band absorption, we propose to synthesize a core-shell structure nanomaterial consisting of NaYF 4 :Yb 3+ , Er 3+ core and a layer of SiO 2 as shell. A series of NaYF 4 :Yb 3+ , Er 3+ nanocrystals were synthesized through hydrothermal method by adjusting the ratio of citric acid(CA)-to-NaOH, and the effects of CA concentration, and NaOH concentration were studied in detail. NaYF 4 :Yb 3+ , Er 3+ @SiO 2 nanoparticles were synthesized by sol-gel method using TEOS as silica source. The results show that the core-shell NaYF 4 :Yb 3+ , Er 3+ @SiO 2 nanoparticles were successfully synthesized. Up-conversion spectra of these nanoparticles were recorded with 980 nm laser excitation under room temperature. There are no changes of the emission centers of nanoparticles before or after silica coating, but the emission intensities of nanoparticles after silica coating are weakened. Furthermore, the property of infrared multi-band absorption was tested through ultraviolet-visible-near infrared spectrophotometer and infrared absorption spectra. The results illustrate that the multi-band infrared absorption nanomaterial was successfully synthesized.
研究领域:
材料科学
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纳米技术
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光学
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产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2014
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IF 2.736
Shizhu Chen,Cuimiao Zhang,Guang Jia,Jianlei Duan,Shuxiang Wang,Jinchao Zhang
Lanthanide-doped sodium yttrium fluoride (NaYF 4 ) nanoparticles exhibit novel optical properties which make them be widely used in various fields. The extensive applications increase the chance of human exposure to these nanoparticles and thus raise deep concerns regarding their riskiness. In the present study, we have synthesized europium doped NaYF 4 (NaYF 4 :Eu 3 + ) nanoparticles with three diameters and used endothelial cells (ECs) as a cell model to explore the potential toxic effect. The cell viability, cytomembrane integrity, cellular uptake, intracellular localization, intracellular reactive oxygen species (ROS), mitochondrial membrane potential (MMP), apoptosis detection, caspase-3 activity and expression of inflammatory gene were studied. The results indicated that these nanoparticles could be uptaken into ECs and decrease the cell viability, induce the intracellular lactate dehydrogenase (LDH) release, increase the ROS level, and decrease the cell MMP in a size-dependent manner. Besides that, the cells were suffered to apoptosis with the caspase-3 activation, and the inflammation specific gene expressions (ICAM1 and VCAM1) were also increased. Our results suggest that the damage pathway may be related to the ROS generation and mitochondrial damage. The results provide novel evidence to elucidate their toxicity mechanisms and may be helpful for more rational applications of these compounds in the future.
研究领域:
纳米技术
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毒理学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Zhenlong Cheng,Mingzhou Meng,Xin Qiao,Yuanli Liu,Ute Resch-Genger,Jun Ou
Optical Thermometry is popular among researchers because of its non-contact, high sensitivity, and fast measurement properties. In the present experiment, Er 3+ /Yb 3+ /K + co-doped NaYF 4 nanoparticles with different K + concentrations were synthesized by solvothermal method , and the samples showed bright upconversion green emission under the excitation of a 980 nm laser. The powder X-ray diffractometer and transmission electron microscope were used to characterize the crystal structure and its surface morphology , respectively. The spectral characteristics of nanoparticles with K + doping concentration from 10% to 30% (Molar ratio) were investigated by fluorescence spectroscopy , and it was observed that the fluorescence intensity reached the maximum at the K + concentration of 20%, after which the intensity weakened when the K + content continued to increase. According to the dependence between the luminescence intensity of the sample and the laser power density and fluorescence lifetime , the intrinsic mechanism was carefully investigated. Temperature-dependent spectra of the samples were recorded in the temperature range of 315–495 K， and the maximum values of absolute sensitivity (S a ) and relative sensitivity (S r ) were measured at 0.0041 K −1 (455 K) and 0.9220%K −1 (315 K). The experimental results show that K + /Er 3+ /Yb 3+ triple-doped NaYF 4 green fluorescent nanoparticles (GFNs) have good prospects for applications in display devices, temperature sensing, and other fields.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
RSC Advances
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2014
·Vol. 4
·期 107
·62802-62808
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IF 3.708
Yan Song,Guixia Liu,Xiangting Dong,Jinxian Wang,Wensheng Yu,Jingmei Li
Bifunctional hybrid nanocomposites based on upconversion luminescence and photothermal properties have a wide range of application, especially biomedical diagnosis and therapy. Herein, the hybrid nanocomposites were prepared via combining NaYF4:Yb3+,Er3+/Ho3+ nanocrystals as shell layer materials and Au nanoparticles as the cores. The as-prepared nanocomposites can simultaneously take advantage of both the upconversion luminescence of NaYF4:Yb3+,Er3+/Ho3+ nanocrystals and the photothermal transduction property of Au nanoparticles. The structure, morphology and composition of the nanocomposites were confirmed by X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS). In addition, the upconversion luminescence and photothermal transduction were evaluated. We observed an overlap between the absorption band of Au nanoparticles and the upconversion emission peaks of the Er3+/Ho3+ ions, and the luminescence resonance energy transfer (LRET) was studied and demonstrated. Under 980 nm laser irradiation, upconversion luminescence and efficient photothermal transduction of the hybrid nanocomposites were found. Moreover, the bifunctional nanocomposites also have shown excellent biocompatibility.
研究领域:
生物医学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Guangliang Lu,Rao Qin,Dabiao Zhai,Tianqi Wan,Jiangang Jiang,Dan Zhang,Ping Zhang,Yiping Wang,He Wang
The development and comparison of Latent Fingerprint Patterns (LFPs) constitute critical components of research in fingerprint detection and identification. However, the development of nanomaterials visualization and digital algorithms for LFPs analysis are mostly studied independently, resulting in inaccurate LFPs. This research synthesized a series of efficient red-emitting NaYF 4 :20 %Yb, 2 %Er, x %Mn ( x = 0, 5, 10, 15, 20, 25, 30, 35, and 40) upconversion nanoparticles (UCNPs) for image development, which were combined with a digital algorithm for accurate LFP recognition. The eightfold increase in luminescence intensity of NaYF 4 :Yb, Er, 30 %Mn at 653 nm effectively avoids interference from biological tissue fluorescence. This improvement is credited to the efficient reverse energy transfer mechanism between Er 3+ and Mn 2+ ions, specifically the transition sequence 4 S 3/2 (Er 3+ ) → 4 T 1 (Mn 2+ ) → 4 F 9/2 (Er 3+ ). Furthermore, a MATLAB program was employed to process the fluorescent images of LFPs developed using the UCNPs nanophosphors, achieving a high matching score of 90.09 % for the optimized sample, significantly outperforming traditional benchmarks. These results demonstrate the superior effectiveness of the NaYF 4 :Yb, Er, 30 %Mn nanophosphor, combined with digital processing algorithms, for practical LFP recognition applications.
研究领域:
材料科学
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生物医学工程
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人工智能
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Jingxiao Liu,Zhichun Zou,Fei Shi,Xin Song,Haoyuan Zhang,Han Zhang,Xiaoying Song,Xinran Zhao,Zixuan Wang,Jiahong Kang
In order to further improve the luminescence of NaYF 4 :Yb,Er, we successfully constructed pitaya-like Cs 0 · 3 WO 3 @NaYF 4 :Yb, Er particles, in which Cs 0 · 3 WO 3 particles were encapsulated in NaYF 4 :Yb, Er particles. This structure enhanced the intensity of 407, 527, 542 and 657 nm emission peaks by 10.1, 5.9, 5.5 and 1.8 times, respectively. Through calculated, the Commission Internationale de l’Eclairage (CIE) chromaticity coordinates changed from (0.28, 0.71) to (0.25, 0.73), indicating that the emission colour was tuned from yellow to green. The construction mechanism of this structure and the mechanism of upconversion (UC) luminescence enhancement were discussed. By studying the different luminescence mechanisms of NaYF 4 :Yb, Er excited by 1550 and 980 nm laser, we found that the UC luminescence enhancement and colour tuning of NaYF 4 :Yb, Er were due to the localized surface plasmon resonance (LSPR) effect of Cs 0 · 3 WO 3 , which can absorb more excited photons and transfer them to the Er 3+ ion 4 I 11/2 level. Given that the transition process of green light emission is easier than red light emission, the redundant photons are more inclined to achieve emitting green light and show UC luminescence enhancement and emission colour tuning. Overall, the as-prepared novel pitaya-like Cs 0 · 3 WO 3 @NaYF 4 :Yb, Er particles exhibit strong UC luminescence enhancement and colour tuning, thus having great application prospect in the field of luminescent displays.
研究领域:
材料科学
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光学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
IF 8.328
Yawei Yang,Wenxiu Que,Xinyu Zhang,Xingtian Yin,Yonglei Xing,Meidan Que,Hongyang Zhao,Yaping Du
A chloroform-assistant Se dissolution in oleylamine without trioctylphosphine and alkylthiol as the green precursor was used for facile and robust synthesis of quaternary selenide nanocrystals. The S 2− modified hydrophilic Cu 2 ZnSnS 4 and Cu 2 ZnSnSe 4 nanocrystals were first prepared by a one-pot thermal decomposition route, followed by a bi-phase hydrophilic treatment process. As a proof of concept, the as-obtained hydrophilic nanocrystals were hybridized with ZnO microspheres as photosensitizers to achieve visible light-driven photocatalytic application; on the other hand, hybridized with NaYF 4 : Yb, Tm microplates to achieve near-infrared light-driven photocatalytic application. These photosensitized hybrids as photocatalysts expanded the light absorption from ultraviolet to visible even near-infrared region, which showed excellent photocatalytic Rhodamine B degradation under visible and near-infrared irradiation compared to pure ZnO and NaYF 4 : Yb, Tm, respectively. Therefore, these hydrophilic Cu 2 ZnSnS 4 and Cu 2 ZnSnSe 4 nanocrystals are proved as efficient photocatalytic sensitizers due to the efficient utilization of the visible light and emissions upconverted from near-infrared light.
研究领域:
材料科学
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化学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2016
·Vol. 16
·期 7
·6970-6977
·
IF 1.338
Xiong Xiaoyuan,Sun Ying,Gao Pei,Li He,Duan Yourong
In this work, an anticancer drug delivery system based on curcumin-conjugated NaYF4:Yb3+, Er3+ nanoparticles was developed. The as-prepared nanoconstruct consisting of uniform hexagonal nanoparticles with an average diameter of about 200 nm was synthesized.
A natural photosensitizer curcumin was loaded onto the nanoparticles through covalent interaction and physical adsorption. Drug loading efficiency was calculated and it turns out a high loading capacity of the as-prepared nanoparticles. Cytotoxity experiments of carboxylic acid-functionalized
UCNPs and curcumin-UCNPs were performed via MTT assay. The drug delivery system demonstrates the ability to be uptaken by three different kinds of cell lines (Human hepatocellular carcinoma Bel-7402 cells, Human SKOV-3 ovarian cancer cells and Human breast adenocarcinoma MCF-7 cells) and to
generate reactive oxygen species upon the excitation of near-infrared light, so as to kill tumor cells. To sum up, such a drug delivery system exhibits good potential in cancer therapy.
研究领域:
纳米技术
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癌症研究
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材料科学
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药学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 20
·5453-5461
·
IF 5.976
Shaohua Fan,Guojun Gao,Shiyu Sun,Sijun Fan,Hongtao Sun,Lili Hu
Absolute quantum efficiency (QE) of up-conversion (UC) materials is still limited to ∼3%, which strongly limits their applications in many areas. Herein, we report highly efficient UC β-NaYF4:Yb3+,Er3+ micro-cylinders prepared via a newly developed Li+/Na+ ion exchange method (IEM) with absolute QE as high as ∼4.0%. A small amount of Li+ is interstitially incorporated in β-NaYF4:Yb3+,Er3+, which not only maintains well the micro-cylindrical morphology but also enhances the emission intensity by ∼40%, doubles absolute UCQE (∼3.0% under a fixed excitation power density of 15 W cm−2), and prolongs the lifetime. The UC excitation profile is composed of a sharp peak at 976 nm and a weak shoulder at 935 nm. The absolute UCQE of Li+/Na+ IEM β-NaYF4:Yb3+,Er3+ is systemically studied over a wide excitation power density of 0.4–100 W cm−2, and we obtained impressively high UCQE of 4.0% under 60 W cm−2 power density, which is among the highest values in the literature. The application of two green UC emissions of Li+/Na+ IEM β-NaYF4:Yb3+,Er3+ in ratiometric thermometers is successfully demonstrated. The high relative temperature sensitivity (SR) of 1113/T2 and excellent repeatability as indicated by three heating–cooling cycles (293–753 K) suggest their promising application as a temperature sensor.
研究领域:
材料科学
·
光学
·
纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Ping Xiao,Song Ye,Huazhen Liao,Deping Wang
In this work, the monodisperse spherical pure β-NaYF 4 :Yb 3+ ,Er 3+ core NCs with average size of 7.2 nm were synthesized by using NaOA as sodium source instead of the conventional NaOH, based on which the sub-20 nm β-NaYF 4 :Yb 3+ ,Er 3+ @NaGdF 4 core-shell NCs with magnetic-optical bifunctional properties were successfully obtained with seed-mediated growth method. The magnetization of the core-shell NCs enhanced proportionally with increased shell thickness, and the maximum upconversion intensity was three orders of magnitude increased in the 18.3 nm NaYF 4 : Yb 3+ ,Er 3+ @NaGdF 4 core-shell NCs compare with the corresponding core NCs. Besides, the upconversion mechanism for the core and core-shell NCs were discussed. This work may lead to an ideal platform for the preparation of sub-20 nm spherical NCs with magnetic and optical properties for application in biomedical imaging and drug delivery.
研究领域:
纳米材料科学
·
生物医学工程
·
光学材料
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jinjian Wei,Mengxin Liu,Xinan Shi,Daocheng Pan
NaYF4:Ce3+,Tb3+ down-conversion nanoparticles with a photoluminescence quantum yield (PLQY) of 54.8% are synthesized by using a ligand-assisted coprecipitation method in this study. The reaction is completed within 1 min at room temperature, and short-chain hexanoic acid and hexylamine serve as the binary ligands, which enable us to synthesize highly luminescent NaYF4:Ce3+,Tb3+ nanoparticles at room temperature. X-ray diffraction (XRD) and transmission electron microscopy (TEM) are used to characterize the as-prepared nanocrystals. The results reveal that the NaYF4:Ce3+,Tb3+ nanocrystals exhibit excellent dispersion and have a particle size of 2.7 nm. Our NaYF4:Ce3+,Tb3+ nanocrystals possess the advantages of room-temperature preparation, high PLQY, and ultrasmall particle size. These results reveal that the NaYF4:Ce3+,Tb3+ nanocrystals might have a high potential in the applications of lighting, display devices, and bioimaging.
研究领域:
材料科学
·
光学
·
生物成像
✓ 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）