APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zhibin Xu,Zhiheng Xu,Sirui Zhu,Xuebin Zhang,Dandan Yang,Xiaobin Tang
Two-dimensional CsPbX 3 perovskite nanosheets serve as unique platforms for polarized emission modulation. However, the integrated control mechanism of bandgap engineering and polarized optical properties remains largely unexplored. In this study, we demonstrated a halogen gradient strategy using iodine-doped CsPbBr 3-x I x nanosheets with polymer encapsulation, enabling simultaneous band structure modification and optical anisotropy regulation. The iodine gradient enabled continuous tuning of the degree of polarization (up to 0.39) across a broad-spectrum range of 520–677 nm. Notably, radiation-induced polarized emission was observed in perovskite nanostructures under X-ray excitation, revealing directional transport behavior under high-energy stimulation. This work presents a detailed systematic investigation into X-ray-induced linearly polarized luminescence from perovskite nanosheets. The polarization-sensitive response detector exhibited enhanced current ratios, which can be attributed to iodine-induced defect suppression. This work not only advances the field of polarized optoelectronics but also establishes new opportunities for the detection of X-ray polarization response.
研究领域:
纳米材料
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光电子学
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钙钛矿光子学
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X射线探测
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偏振光发射
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jiaming Li,Zhaoping Chen,Jianming Liu,Enrou Mei,Xiaojuan Liang,Jianping Liu,Weidong Xiang
CsPbX 3 (X = Br, I) quantum dots (QDs) have gradually become the star materials in light-emitting diodes (LED), but its stability has a big impact on development. Here, a variety of novel CsPbX 3 -TS-1 nanocomposites have been fabricated and the luminescence wavelength can be tunable by varying the halide nanocomposites (Br, I). What's particularly nice is that the original photoluminescence quantum yield (PLQY) of CsPbBr 1 l 2 QDs approaches 82% and it still has close to 74% after being combined with TS-1. Besides, the nanocomposites enhance stability resisting moisture, thermal stressing and light. In addition, a 460 nm InGaN blue chip, YAG:Ce 3+ and CsPbBr 1 I 2 -TS-1 were equipped with white light emitting diodes (WLEDs), with a luminous effect of 95 lm/W, a color rendering index of 80, and a color temperature of 5144 K. Meanwhile, wide color gamut (116% of the National Television Standards Committee, 86.3% of the ITU-R Recommendation BT. 2020) and great chromaticity coordinate (0.3425, 0.3408) are realized. This is a very important step to open up the awkward situation of the practical application of perovskite QDs materials in LED.
研究领域:
材料科学
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光学工程
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Advanced Optical Materials
·
2022
·Vol. 10
·期 20
·2200865
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IF 10.05
Kai Han,Jiance Jin,Binbin Su,Jianwei Qiao,Zhiguo Xia
Metal clusters with color-tunable radioluminescence have attracted growing attention as X-ray detection materials. However, they are generally less scintillation-efficient due to the coexistence of multiple exciton recombination centers. Herein, two new zero-dimensional copper(I)-based clusters (DIET) 3 Cu 3 X 3 (DIET = 1,3-Diethyl-2-thiourea, X = Cl, Br) are designed, which support the single channel photon emission (Cu cluster centered, CC) to enhance the scintillation performance. Those DIET ligands (L) anchoring with copper(I) ions not only generate direct Cu L bonds, but also form a disorder [Cu 3 X 3 ] cluster, which results in the intense X-ray absorption. (DIET) 3 Cu 3 Br 3 with low halogen electronegativity further weakens halogen-to-ligand charge transfer (XLCT) emission, enabling enhanced quantum efficiency (≈69%) and scintillation performance comparable to commercially available Lu 3 Al 5 O 12 :Ce. Moreover, the flexible thin film counterpart demonstrates legible X-ray imaging with high spatial resolution of 11.71 lp mm −1 . This study provides a feasible design principle to discover new metal cluster-based scintillators and to further expand their radiation detection applications.
研究领域:
材料科学
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辐射探测
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BIOCHEMICAL PHARMACOLOGY
·
2021
·
IF 5.858
Yi Wang,Zhigang Wang,Zhengping Wu,Menglin Chen,Dong Dong,Pei Yu,Danyi Lu,Baojian Wu
The molecular events underlying aristolochic acid (AA) nephropathy are poorly understood, and specific therapies for treatment of AA nephropathy are still lacking. Here we aimed to investigate a potential role of REV-ERBα and ferroptosis in renal injury induced by aristolochic acid I (AAI), a typical AA. The regulatory effects of REV-ERBα on AAI-induced renal injury were determined using kidney-specific Rev-erbα knockout mice . Ferroptosis was assessed based on measurements of iron, GSH, and GPX4 . Targeted antagonism of REV-ERBα to alleviate AAI-induced renal injury and ferroptosis was assessed using the small molecule antagonist SR8278. mRNAs and proteins were quantified by qPCR and Western blotting , respectively. We first showed that REV-ERBα was upregulated and its target BMAL1 was downregulated in the kidney of mice with AAI nephropathy. Upregulation of REV-ERBα protein was confirmed in aristolactam I (ALI, a nephrotoxic metabolite of AAI)-treated mRTECs. We also observed enhanced ferroptosis (known to be regulated by REV-ERBα) in mice with AAI nephropathy and in ALI-treated mRTECs. Kidney-specific knockout of Rev-erbα reduced the sensitivity of mice to AAI-induced ferroptosis and renal injury. Furthermore, knockdown of Rev-erbα by siRNA or SR8278 (a REV-ERBα antagonist) treatment attenuated ALI-induced ferroptosis in mRTECs. Moreover, REV-ERBα antagonism by SR8278 alleviated ferroptosis and renal injury caused by AAI in mice. In conclusion, we identify REV-ERBα as a regulator of AAI-induced renal injury via promoting ferroptosis. Targeting REV-ERBα may represent a promising approach for management of AAI nephropathy.
研究领域:
药理学
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肾病学
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分子生物学
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DOI
PubMed
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CLINICAL BIOCHEMISTRY
·
2026
·
IF 2.3
Huifeng Qian,Haiyong Jin,Shunchang Li
Objective To investigate the cause of markedly elevated cardiac troponin I (cTnI) levels that were inconsistent with the clinical presentation in an 18-year-old male patient with bradycardia. Methods Serial dilution analysis, heterophile antibody blocking test (HBT), polyethylene glycol 6000 (PEG6000) precipitation, and recovery rate calculation were performed on the patient samples, and the experiments were repeated three times. Additionally, continuous monitoring of cTnI, cardiac troponin T, myoglobin, creatine kinase (CK) and CK-MB was conducted on the patient. The recovery rate in the control group was derived from 20 troponin-positive patients. Results The serial dilution test showed good linearity. After HBT treatment, the cTnI concentration was 3744 ng/L, while the control tube was 4024 ng/L, showing no significant change. In contrast, cTnI decreased markedly to 142 ng/L after PEG6000 precipitation. The recovery rate was only 5.61%, which was significantly lower than the mean recovery rate of 53.33% observed in the control group. Conclusion The patient was ultimately diagnosed with falsely elevated cTnI caused by macrotroponin interference. This case suggests that when laboratory results are inconsistent with clinical findings, the possibility of analytical interference should be carefully considered, and effective communication between the laboratory and clinicians is essential to avoid misleading diagnostic and therapeutic decisions.
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INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
·
2018
·
IF 3.891
Jian Xie,Jinliang Xu,Xiang Li,Huan Liu
Dropwise condensation heat transfer (DWC) on superhydrophobic nanograsses surface (NGS) was investigated for long-term operation. For DWC of pure water-vapor on fresh NGS, two heat transfer regimes are identified: higher heat transfer coefficients with droplet jumping, and constant heat transfer coefficients with droplet rolling. The one-week operation not only deteriorates heat transfer performance, but also changes jumping or rolling mode to sliding mode. The condensation heat transfer coefficients are apparently decreased from first to third day, but they approach a limit value since the third day. In order to identify if the single-molecule-layer of polymer (SML) modified on nanograsses was destroyed, DWC on a smooth single-molecule-layer of polymer surface (SSML) was tested to display stable heat transfer with drop sliding for one-week operation, concluding no failure of the polymer layer. The collapse and breakage of nanograsses were observed to explain the decayed heat transfer versus time on NGS. Compared with SSML, the NGS has smaller droplet departure size but lower heat transfer coefficients, indicating positive and negative effects after introducing nanostructures. Three nanostructure failure mechanisms are proposed. This work suggests a new research field of the nanoscale fluid-wall interaction.
研究领域:
热科学与工程
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纳米技术
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表面科学
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传热传质
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材料科学
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JOURNAL OF FOOD AND DRUG ANALYSIS
·
2022
·
IF 6.157
Jia Wang,Chengyi Hong,Zhengzhong Lin,Zhi-Yong Huang
A simple fluorescence method to quantitatively monitor malachite green (MG) was introduced based on the conformation switch effect of MG-aptamer (Apt) and the fluorochrome of SYBR Green I (SGI). SGI can embed in the stem-loop structure of Apt to produce fluorescence. However, the fluorescence will be quenched when MG is introduced because of the specific binding of Apt to MG. Under the optimal conditions, the fluorescence method displayed excellent linear relationship between the fluorescence quenching efficiencies and the MG concentrations ranging from 0.02 μmol L −1 to 1.0 μmol L −1 . The detection limit of the method was 0.67 μg kg −1 (3 α / κ , n = 9) which is lower than the limit (1 μg kg −1 ) specified in the national standard of China (GB/T 19857–2005) and the limit (2 μg kg −1 ) specified by the European Food Safety Authority (EFSA, 2016). Excellent recoveries between 87.1% and 106.9% tested by spiking standards were achieved with RSD less than 6.4%. The data were confirmed by the method of HPLC, and the results proved that the established fluorescence method could be used for the rapid detection of MG in fish with high accuracy and sensitivity.
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 11
·5330-5337
·
IF 3.3
Yu Wang,Rao Chen,Dongmei Liu,Chaofei Peng,Junwei Wang,Xiaoqing Dong
The development of effective Vis-sensitive photoinitiators for light-emitting diode (LED) polymerization is still an emerging challenge as LEDs are being developed into the predominant light sources. In this work, a series of new functionalized photoinitiators, containing thioxanthones and oxime-esters as functional groups, was designed and straightforwardly synthesized in two steps. The structures of the photoinitiators were studied using 1H NMR, 13C NMR, and high-resolution mass spectrometry. The conclusion of the photophysical properties indicated that the long wavelength absorptions from 360 nm to 405 nm made the investigated thioxanthone derivatives quite appealing as a valuable photoinitiator under UV-Vis LEDs. The structure–reactivity relationship was also studied in detail through real-time FTIR spectroscopy. A possible photolysis mechanism was expected based on further photolysis and online 1H NMR activities. With a proper molecular design, the new functionalized photoinitiators were synthesised straightforwardly and they displayed more advanced initiation abilities than their parent thioxanthone.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jun Cai,Yibing Xie,Chong Ma,Xueqian Wang,Langlang Wang,Ping Ning,Yixing Ma
Photocatalytic oxidation of gaseous heavy metals is an efficient approach to alleviate energy crises and environmental pollution. In this study, a novel two-step solvothermal method was designed to synthesize reduced graphene oxide (rGO)-modified bismuth oxyhalide (BiOX, X = Cl, I, Br) nanosheets. The modification of rGO led to the significant enhancement in the specific surface area of BiOX nanosheets, reduction in the bandgap, improvements in the light absorption range and intensity, acceleration in the photogenerated carrier separation rate, and reduction in the photogenerated electron − hole complexation. Furthermore, both O 2 – and OH were demonstrated to be active species in the reaction. Owing to these achievements, all samples displayed significantly improved photocatalytic performance. Furthermore, the rGO-modified samples exhibited excellent stability and maintained the highest mercury removal efficiency after several cycles. However, the samples prepared in this research displayed a high level of moisture resistance. These characteristics of BiOX-based materials make them potential candidates for the photocatalytic removal of heavy metals from industrial waste gases.
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SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Xiaoyu Jiao,Rui Zeng,Guangcai Lan,Siyu Zuo,Jun He,Chengjun Wang
The reactive iodine species may exhibit significant impacts on many global atmospheric issues and the I • /I 2 •− radicals play key roles for inducing the formation of these reactive iodine species. However, the current understanding on the formation of I • /I 2 •− radicals in atmospheric aqueous aerosol is still quite limited. The results reported herein suggest that I • /I 2 •− can be produced simultaneously in aqueous aerosol by several sunlight-driven photochemical pathways including direct photo-dissociation of soluble organic iodine (SOI) at rates of 0.10–1.34 × 10 −9 M ns −1 and 0.99–5.68 × 10 −7 M μs −1 , • OH-mediated oxidation of I − at 0.03–1.41 × 10 −8 M ns −1 and 0.05–4.10 × 10 −6 M μs −1 , and 3 DOM ⁎ -induced oxidation of I − at 1.57–1.65 × 10 −9 M ns −1 and 0.99–5.68 × 10 −7 M μs −1 for generation of I • and I 2 •− , respectively. Meanwhile, the pathway of e aq − -initiated stepwise reduction of IO 3 − to I 2( aq ) and further photolyzed into I • plays negligible role in formation of I • /I 2 •− due to the low reaction rates and severe quenching effect of e aq − by dissolved O 2 . Our work presented the new data on mechanism and kinetics for comprehensive elucidation of I • /I 2 •− formation in coastal atmospheric aqueous aerosol and would help to better understand the transformation mechanism of iodine species, pathways of iodine cycling and the associated environmental impacts involving atmospheric reactive iodine radicals.
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PubMed
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LANGMUIR
·
2022
·
IF 4.331
Si Zheng,Tanyi Hao,Lin Zhang
Exposed collagen on the diseased vessel wall is crucial for arterial thrombosis. The currently developed antithrombotic drugs mostly target blood components such as platelets and suffer from the risk of bleeding. Therefore, anticollagen therapy of covering the collagen surface was proposed as an alternative in our previous study, and an antithrombotic peptide LWWNSYY was designed and validated. However, its application was hindered due to the poor water solubility. In the present study, in order to develop a novel antithrombotic peptide with enhanced water solubility, redesigning of LWWNSYY to LEKNSTY using the EK pattern was proposed. Improved solubility was obtained for LEKNSTY. Moreover, the binding of LEKNSTY on the collagen surface was confirmed by molecular docking, molecular dynamics simulations, and experimental validation. A Kd of 0.91 ± 0.44 μM was observed. The effective inhibition of platelet adhesion on the collagen surface by LEKNSTY was demonstrated at an IC50 of 2.48 ± 0.59 μg/mL. Therefore, the successful design of the antithrombotic peptide LEKNSTY was confirmed, which would facilitate the research into the interface involving thrombus and the development of antithrombotic agents.
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Journal of Cleaner Production
·
2022
·
IF 11.072
Xinrong Li,Xianzhi Hu,Futing Zi,Shuliang Chen,Peng Yang,Yan Zhang,Yunlong Chen,Li Zhao,Yue Lin,Yunshu Jiang,Jiao Li,Haiwen Wang,Zhujuan Li,Juan Li,Yufang Li
Natural materials that are economical and environmentally benign are being explored as adsorbent bases for recovering Au(I) from thiosulfate solution via an efficient grafted functional group. In this work, natural vermiculite (VE) modified with triphenylphosphine oxide (TPPO) was used to adsorb Au(I) from thiosulfate solution, and it's gold recovery performance and adsorption mechanism. Fourier transform infrared spectroscopy , scanning electron microscopy–energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and nitrogen adsorption were used to characterize the adsorbents. TPPO-modified VE (VE-TPPO) showed improved gold adsorption ability at a pH of approximately 10, thiosulfate concentration of approximately 0.1 mol/L and temperature of approximately 25 °C. More than 95% of Au(I) could be recovered, and the loading capacity of Au on VE-TPPO increased with decreasing adsorption temperature, reaching an amount of 4.22 kg/t after once adsorption. TPPO was adsorbed on vermiculite through cationic-π bonds. Au(I) was adsorbed on VE-TPPO by a ligand-exchange mechanism involving charge transfer between P O groups and Au(I). Moreover, the interaction mechanism between TPPO and Au(I) was further validated by density functional theory calculations. The use of natural materials with low cost and environmental impact can make the process of leaching gold with thiosulfate safer and cleaner.
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