CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Wei Wan,Xinxin Han,Yayun Zhou,Fangrui Chen,Xiping Jing,Shi Ye
Developing a secure and unclonable anti-counterfeiting technology with more dimensional encryptions is urgently demanded. All-inorganic halide perovskites hold great potential for applications in advanced fluorescence anti-counterfeiting owing to their superior optical properties, such as tunable emission colors, narrow emission peaks, etc. By further utilizing the feasibility of anion exchange for perovskite halides, this research successfully designs five-dimensional (5D) anti-counterfeiting barcodes with core–shell-like structured perovskite-like oxide and perovskite halide composites. The composites are prepared by a facile synthesis method, which includes adhesive growth of Cs(Pb x Mn 1-x )(Cl y Br 1-y ) 3 on the surface of CsCa 2 Ta 3 O 10 : Yb, Er (abbreviated as CCTO: Yb, Er@CsMX 3 ) via sharing Cs + at the interface. The unique structure makes it possess sensitivity to some additive decrypted inks, offering one more intriguing anti-counterfeiting dimension beyond the common dual-mode fluorescence and time-gating technique. The CCTO: Yb, Er@CsMX 3 composites exhibit typical green upconversion (UC) luminescence under a 980 nm laser, red or green or blue (RGB) emission under ultraviolet (UV) light irradiation, ns-ms emission decay time, and changeable emission color when treated with decrypted inks. The fluorescent inks and barcodes are simple for fabrication, efficient for coding, easy for viewing and difficult for cloning, making them promising for anti-counterfeiting applications.
研究领域:
材料科学
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光学
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纳米技术
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防伪技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Limin Wu,Zeyu Cheng,Shoulei Xu,Wenxia Wu,Yazhao Wang,Huiting Zhang,Zhonghua Zhu,Ninghan Zeng,Bernard Albert Goodman,Wen Deng
High quality optical single crystals of cubic Yb 2.96 Er 0.04 Al 5 O 12 and Y 2.96 Er 0.04 Al 5 O 12 were successfully prepared using the OFZ method. The 980 nm photon absorption intensity by Yb 2.96 Er 0.04 Al 5 O 12 crystal is much larger than that in Y 2.96 Er 0.04 Al 5 O 12 crystal, the transmission of Yb 2.96 Er 0.04 Al 5 O 12 crystal is lower than that of Y 2.96 Er 0.04 Al 5 O 12 crystal, because the density of Yb 2.96 Er 0.04 Al 5 O 12 single crystal (6.604 g/cm 3 ) is larger than that of Y 2.96 Er 0.04 Al 5 O 12 single crystal (4.529 g/cm 3 ). The up-conversion luminescence spectra of the crystals excited by 980 nm laser show several distinct groups of emission peaks at ∼544 and ∼556 nm, as well as ∼650 and ∼667 nm. The peak intensities of the up-conversion luminescence spectrum for the Yb 2.96 Er 0.04 Al 5 O 12 crystal were much higher than those for the Y 2.96 Er 0.04 Al 5 O 12 crystal. Overall, the results of the present study suggest that Yb 2.96 Er 0.04 Al 5 O 12 single crystal may have advantages over Y 2.96 Er 0.04 Al 5 O 12 single crystal for luminescence in solid-state lasers.
研究领域:
光学
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材料科学
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DOI
高影响因子
Carbon Energy
·
2026
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IF 21.4
Lizhen Lu,Xinghua Zhu,Yuan Liang,Jinghui Wang,Haoyu Zhang,Jinbo Xue,Qianqian Shen,Jian Ku Shang,Qi Li
To search for efficient carbon dioxide reduction photocatalysts, rare-earth element doping has attracted considerable attention owing to their unique electronic structures and energy levels, which significantly enhance light absorption and charge-transfer efficiency. In this work, Er-doped two-dimensional ultrathin BiOCl nanosheets are synthesized via a surfactant-assisted hydrothermal method. Er-doping not only suppresses the photogenerated charge carrier recombination but also further enhances the photocatalytic memory effect of BiOCl nanosheets. The synergistic effect of Er doping and the photocatalytic memory effect induced by prior visible-light irradiation largely modulates the internal electronic state of BiOCl nanosheets. Experimental and density functional theory analysis results demonstrate that desirable changes subsequently occur in Er-doped BiOCl nanosheets, compared with pure BiOCl nanosheets, including the generation of abundant oxygen vacancies, improvement of visible light absorption, higher photogenerated electron reduction potential, stronger piezoelectric response, better charge carrier separation and transfer, enhanced CO 2 adsorption, and lower CO 2 activation energy. Bi 0.98 E 0.02 OCl nanosheets (2 mol% Er) exhibit superior CO 2 -to-CO reduction performance in photocatalysis, piezocatalysis, and photopiezocatalysis without co-catalysts, photosensitizers, or sacrificial agents. With nearly 100% selectivity, the photopiezocatalytic CO 2 -to-CO rate reaches ~3921.2 μmol g −1 h −1 under visible light and ultrasonication, far exceeding previous reports.
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DOI
高影响因子
Sustainable Energy & Fuels
·
2021
·Vol. 5
·期 22
·5814-5824
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IF 6.367
Ping Mu,Man Zhou,Kai Yang,Chensheng Zhou,Yuan Mi,Zhenzhen Yu,Kangqiang Lu,Zhengquan Li,Shaobo Ouyang,Weiya Huang,Changlin Yu
Using ion doping to engineer sulfur vacancies over metal sulfides is an effective method to improve photocatalytic properties, such vacancies form the center of the electron-captured state to promote the separation and transfer of photogenerated carriers. In this research, Yb/Er co-doped bulk Cd0.5Zn0.5S (CZS) was fabricated by a one-step simple hydrothermal process, and used for evaluating the catalytic activity for aquatic hydrogen production under visible light irradiation. The results showed that the Cd0.5Zn0.5S:Yb(15%), Er obtained exhibited a higher efficient photocatalytic activity of hydrogen evolution, in which the efficiency of Cd0.5Zn0.5S:Yb(15%), Er (422.0 μmol g−1 h−1) was 2.7 times higher than that of bare Cd0.5Zn0.5S (154.7 μmol g−1 h−1). This can be attributed to the augmented active surface area, the broadened spectral absorption of visible light and the facilitation of the separated efficiency of the photogenerated carriers. This finding provides a simple way to activate the metal-chalcogenides with S-vacancies for optimizing the photocatalytic performance.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
AGING CELL
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2021
·Vol. 20
·期 3
·e13319
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IF 9.304
Gang Du,Zhiming Liu,Zihua Yu,Zhangpeng Zhuo,Yuedan Zhu,Juanyu Zhou,Yang Li,Haiyang Chen
As they age, adult stem cells become more prone to functional decline, which is responsible for aging-associated tissue degeneration and diseases. One goal of aging research is to identify drugs that can repair age-associated tissue degeneration. Multiple organ development-related signaling pathways have recently been demonstrated to have functions in tissue homeostasis and aging process. Therefore, in this study, we tested several chemicals that are essential for organ development to assess their ability to delay intestinal stem cell (ISC) aging and promote gut function in adult Drosophila . We found that taurine, a free amino acid that supports neurological development and tissue metabolism in humans, represses ISC hyperproliferation and restrains the intestinal functional decline seen in aged animals. We found that taurine represses age-associated ISC hyperproliferation through a mechanism that eliminated endoplasmic reticulum (ER) stress by upregulation of the target genes of unfolded protein response in the ER (UPR ER ) and inhibiting the c-Jun N-terminal kinase (JNK) signaling. Our findings show that taurine plays a critical role in delaying the aging process in stem cells and suggest that it may be used as a natural compound for the treatment of age-associated, or damage-induced intestinal dysfunction in humans.
研究领域:
衰老研究
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干细胞生物学
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分子遗传学
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产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
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2020
·
IF 4.613
Tingting Yang,Junyong Sun,Wu Yao,Feng Gao
To understand the relationship between endoplasmic reticulum (ER) stress and the level of hypochlorous acid (HOCl), it is highly desired to develop an ER-targetable HOCl probe to monitoring the HOCl level. In this study, a new turn-on type of two-photon ER-targetable fluorescent probe (ER-NPA) is designed for fluorescent sensing and imaging HOCl in ER using 4-hydroxy-1,8-naphthalimide as the fluorophore , p-aminophenyl ether as the recognition receptor, and methyl sulfonamide as ER-targetable group. The probe ER-NPA exhibits some intrinsic features such as excellent water solubility, good biocompatibility , significantly fast and enhanced fluorescence response to HOCl within 60 s, and detection limit as low as 6.2 nM for HOCl determination. The probe ER-NPA is successfully applied to real-time monitoring of exogenous and endogenous HOCl fluctuations in HeLa cells and zebrafish during ER stress. The developed probe ER-NPA may provide a new strategy to reveal the chemical biology roles of HOCl in ER stress-related diseases.
研究领域:
生物化学
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医学
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分子影像学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2022
·
IF 4.326
Jing Cao,Ting-Ting Hu,Dan Wang,Jie-Xin Wang
Rare earth ion doped upconverison (UC) luminescence nanophosphors have attracted much attention owing to their wide applications. It is known that homogeneous doping of ions in matrixes and particle size distribution (PSD) determine the luminescent properties. In this study, we reported a novel approach to prepare CaF2:Er3+ and CaF2:Yb3+/Er3+ UC nanophosphors by high-gravity reactive precipitation in a rotating packed bed (RPB) combining hydrothermal process, which is applied for noninvasive temperature detection. The intensified micromixing in the RPB reactor contributes to the achievement of CaF2 nanoparticles with a narrower PSD, more homogeneous doping of Er3+ and Yb3+ ions in the CaF2 matrix, and higher doping efficiency compared to a conventional stirred tank reactor (STR). In particular, the luminescent intensities of the as-prepared CaF2:Er3+(2%) and CaF2:Yb3+(10%)/Er3+(1%) are respectively 12 and 2 times higher than those of the corresponding products prepared in the STR. Furthermore, the maximum absolute sensitivity of RPB-prepared CaF2:Yb3+(10%)/Er3+(1%) is calculated to be 0.0049 K–1, comparable with those of other reported Yb3+/Er3+-codoped materials. This exhibits a great potential of CaF2:Yb3+/Er3+ UC nanophosphors as promising noncontact temperature measuring materials.
研究领域:
材料科学
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光学
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纳米技术
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产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2018
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IF 3.972
Lihua He,Xiao Zou,Xiang He,Fengying Lei,Na Jiang,Qiaoji Zheng,Chenggang Xu,Yongfu Liu,Dunmin Lin
A variety of NaYF4:Yb/Er upconversion materials were successfully synthesized via a facile hydrothermal method by altering the volume ratios (0:1, 1:1, 2:1, 3:1, 4:1, 5:1) of ethanol to water and various alcohols (methanol, n-propyl alcohol, isopropyl alcohol, ethylene glycol, polyethylene glycol, and phemethylol), and the grain size and luminescence of the materials were effectively tailored. The addition of alcohol effectively reduces the grain size of the materials and simultaneously leads to the surprising enhancement of the UC emission. The increase in the volume ratio of EtOH/H2O causes the transformation of the crystal structure of the materials from hexagonal to cubic phase. The particle size of the material with the EtOH/H2O of 2:1 is almost 1000 times smaller than that of the material without EtOH, and the strongest luminescence is observed at the EtOH/H2O of 2:1. The type of alcohol in the solvent exhibits a significant influence on the luminescent properties of the materials. The NaYF4:Yb/Er nanocrystals obtained using different alcohols as solvent possess much a smaller grain size and stronger upconversion luminescence than that using water as solvent, and the NaYF4:Yb/Er materials with n-propyl alcohol exhibit the strongest luminescence intensity. The mechanism of the reduction of grain size and enhancement in the luminescence of the NaYF4:Yb3+, Er3+ upconversion materials has been proposed. This study may suggest a simple method to significantly reduce the grain size and improve the upconversion luminescence properties of NaYF4-based fluorescence material.
研究领域:
材料科学
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光学
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纳米技术
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
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2019
·
IF 4.309
Zepeng Rao,Xiaofeng Xie,Xiao Wang,Asad Mahmood,Shengrui Tong,Maofa Ge,Jing Sun
A series of Er-doped TiO2 photocatalysts, using Er(NO3)3·6H2O precursor ranging from 0.5 to 2 mol %, were synthesized via sol–gel method with titanium(IV) isopropoxide solution as reactant. The structure and properties of as-prepared samples were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV–vis spectroscopy, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy, thermogravimetric analysis, photoluminescence, electrochemical impedance spectroscopy, and photocurrent. The as-synthesized Er-doped TiO2 nanoparticles demonstrated improved photocatalytic activities for the photodegradation of selected volatile organic compounds, including acetaldehyde, o-xylene, and ethylene. Additionally, high photodegradation of acetaldehyde was recorded in the visible region (λ > 420 nm). XPS analysis revealed that a handful of Er in anatase TiO2 was presented in the form of Er2O3, which benefited by increasing the specific surface area ranging from 59.28 to 110.34 m2/g and consequently enhanced the adsorption capacity for acetaldehyde, o-xylene, and ethylene 3.3, 3.7, and 3.8 times, respectively, in contrast to the undoped TiO2. Electron spin resonance results showed that Er doping caused production of oxygen vacancies (VO) and Ti3+, which promoted the photocatalytic activity of the catalyst. The TiO2 samples containing 0.5–1.5% Er content exhibited higher photoactivity in comparison with other samples. The highest removal efficiency of acetaldehyde and o-xylene within 100 min was 99.2 and 84.6%, respectively, and ethylene degradation efficiency reached 22.4% within 180 min. Furthermore, the visible light elimination efficiency of acetaldehyde was 25.5%. Finally, the results suggested that Er doping predominantly inhibited the catalyst poisoning in the degradation of o-xylene.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
BREAST CANCER RESEARCH AND TREATMENT
·
2023
·
IF 3.8
Lei Lei,Huang Yuan,Shi Lei,Ye Weiwu,Lv Xianmei,Ying Lisha,Yu Xingfei,Cheng Skye Hung-Chun,Zheng Yabing
Purpose Endocrine therapy is the anti-tumor therapy for human breast cancer but endocrine resistance was a major burden. It has been reported that Palbociclib and fulvestrant can be used in combination for the treatment of patients who are experiencing endocrine resistance. However, the underlying mechanism is unclear. In this study, we aimed to investigate the mechanism by which Palbocicilib affected ER-positive breast cancer, combined with fulvestrant. Methods We first detected the effect of palbociclib on cell survival, growth and cycle distribution separately by MTT, colony formation and flow cytometry. Then SNHG17 was screened as palbociclib-targeted LncRNA by LncRNA-seq, and the SNHG17-targeted mRNAs were selected by mRNA-seq for further determination. Subsequently, the underlying mechanism by which palbociclib promoted the cytotoxicity of fulvestrant was confirmed by qRT-PCR, western blot, and immunoprecipitation. Eventually, the xenograft model and immunohistochemistry experiments were used to validate the sensitization effect of palbociclib on fulvestrant and its mechanism in vivo. Results Palbociclib significantly enhanced the cytotoxicity of fulvestrant in fulvestrant-resistant breast cancer cell lines. Interestingly, this might be related to the lncRNA SNHG17 and the Hippo signaling pathway. And our subsequent western blotting experiments confirmed that overexpressing SNHG17 induced the down-regulation of LATS1 and up-regulated YAP expression. Furthermore, we found that the increased sensitivity of breast cancer cells was closely associated with the LATS1-mediated degradation of ER-α. The following animal experiments also indicated that overexpressing SNHG17 obviously impaired the anti-cancer effect of co-treatment of palbociclib and fulvestrant accompanied by decreased LATS1 and increased ER-α levels. Conclusion Palbociclib might sensitize the cytotoxicity of fulvestrant in ER-positive breast cancer cells by down-regulating SNHG17 expression, and then resulted in the LATS1-inactivated oncogene YAP and LATS1-mediated degradation of ER-α.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Xinwen Liu,Bingchu Mei,Guolong Tan
Fluoride-upconversion transparent ceramic materials doped with Er ions have attracted extensive interest due to their higher stability, lower phonon energy, and higher upconversion efficiency. xEr:Sr 5 (PO 4 ) 3 F (S-FAP) (x=0.5–5 at%) transparent ceramics have been synthesized by hot pressing sintering in this work, and the maximum optical transmittance of the sample reached 74.52 and 82.45% at 500 and 1000 nm, respectively. The XRD results of the powder and ceramic samples were consistent with the diffraction characteristics of the hexagonal S-FAP crystal structure. The SEM and TEM images of powder revealed that the morphology of the sample was composed of mostly rice grains with a diameter of around 20 nm. The XPS and EDS results confirmed the presence of Er 3+ and the uniform distribution of Er elements. The thermally etched surface and cross section of ceramics revealed residual pores as the most important scattering source, and the SEM images of the ceramics show that Er doping can obviously promote the growth of the average grain size of S-FAP transparent ceramics. Furthermore, the upconversion luminescence characteristics and fluorescence lifespan of S-FAP transparent ceramics with varied Er doping concentrations were examined, as well as the upconversion luminescence process. The findings in this work indicate that Er:S-FAP transparent ceramics can be employed as a potential upconversion fluorescent material in display technology, biomedicine, temperature sensing, and other applications.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Ruonan He,Junyi Yang,Shengjie Yuan,Ling Chen,Hongqiang Ren,Bing Wu
Real-time monitoring of estrogenic activity in the aquatic environment is a challenging task. Current biosensors face difficulties due to their limited response speed and environmental tolerance, especially for detecting wastewater, the major source of estrogenic compounds in aquatic environments. To address these difficulties, this study developed a single fluorescent protein (FP) -based whole-cell bacterial biosensor named ER-Light, which was achieved by inserting the sensing domain of the estrogen receptor (ER) into the FP Citrine and expressing it in the periplasm of Escherichia coli . As designed, ER-Light enables the detection of net estrogenic activity in mixtures, represented by estradiol equivalent concentration (EEQ). ER-Light detects EEQ in 40 s with a detection limit of 4.55 × 10 −7 μM and a maximum working range of 1.1 × 10 −4 μM, demonstrating sufficient response speed, sensitivity, and working range. In addition, the ER-Light can survive and tolerate wastewater effluent. Satisfactory recoveries (91.0 % to 102.1 %) eliminated concerns about the matrix effect of wastewater. EEQs (Not detected-2.9 ×10 −5 µM) measured by ER-Light from the effluent of 9 wastewater treatment plants validate its practicality in detecting wastewater. This is the first attempt to integrate ER into FP-based biosensors for environment monitoring. Our findings provide valuable design rules for real-time detection of bioactivity effects in the environment, contributing to the safeguarding of ecological and human health.
研究领域:
环境科学
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分子生物学
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生物技术
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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）