JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Xiaoman Li,Ruijin Fan,Pengfei Zhai,Xinyu Liu,Huijun Liu,Shitong Xu,Rongfei Wei,Hai Guo
The demands for white-light-emitting materials are becoming more and more rigorous. In this work, a novel kind of Sn 2+ /Mn 2+ doped phosphate aluminum calcium glass was fabricated by a traditional melt-quenching technique. Broadband excitation and emission of Sn 2+ ions were detected in Sn 2+ single-doped glass samples. By the modulation of excitation wavelength, tunable broadband cyan-blue light emissions of Sn 2+ were also realized. Combined with the red light emitting of Mn 2+ ion, a nearly white light with a good chromaticity coordinate (0.339, 0.298) and a relatively low correlated color temperature (CCT) of 5107 K were obtained in Sn 2+ /Mn 2+ codoped glasses due to the energy transfer process from Sn 2+ to Mn 2+ ions. In addition, after two cycles of heating and cooling treatment, the emission intensity of Sn 2+ doped glass sample remained 97.9% of the initial emission intensity at 300 K. All of these results reveal that these Sn 2+ /Mn 2+ doped aluminum calcium phosphate glasses have good resistance to thermal impacts and have prospects in white-light-emitting diodes (W-LEDs) fields.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Yan Gao,Yao Cheng,Feng Huang,Hang Lin,Ju Xu,Yuansheng Wang
In this work, a new type of luminescent temperature sensor based on the Sn 2+ →Mn 2+ resonance energy transfer is designed, which shows great potential in high temperature optical thermometry. Using the micro-sized Sn 2+ /Mn 2+ :α-Sr 2 P 2 O 7 phosphor fabricated by carbon reduction method as optical thermometer, the sensitivity in the temperature range of 423 K–623 K is well superior to that for the other micro/nano luminescent temperature sensing materials reported previously, and the maximal absolute sensitivity reaches as high as 0.027 K −1 at 623 K. Analyses of the temperature-dependent photoluminescence spectra and configurational coordinate diagrams for Sn 2+ :α-Sr 2 P 2 O 7 and Mn 2+ :α-Sr 2 P 2 O 7 indicate that the temperature-sensitive variation in fluorescence intensity ratio of Sn 2+ to Mn 2+ is originated from the difference in thermal quenching activation energy for 3 P J (J = 0,1) levels of Sn 2+ (4053 cm −1 ) and 4 T 1 level of Mn 2+ (2464 cm −1 ). These results may provide useful inspiration for building highly sensitive self-referencing optical thermometers based on energy transfer induced sensitized luminescence.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
SENSORS
·
2025
·Vol. 25
·期 10
·3042
·
IF 3.5
Junchao Yang,Liu Yang,Ting Liang,Ling Zhang,Jianan Wei,Shuya Cao,Qibin Huang
HighlightsWhat are the main findings?A 2 mol% Sn2+-doped CuFe2O4sensor was produced for DMMP detection.The sensor demonstrated suitable sensing performance and selectivity toward DMMP.What is the implication of the main finding?The superior response–recovery characteristics and enhanced moisture resistance compared to the undoped sensor are relevant in gas-sensing applications.Sarin poses a serious threat to human health, necessitating the development of an appropriate sensing technology.Sarin is an extremely toxic and fast-acting chemical warfare nerve agent that poses a serious threat to human health, necessitating the development of appropriate sensing technologies. Dimethyl methylphosphonate (DMMP), which has a chemical structure similar to that of sarin but is non-toxic, is often used as a simulation agent in related research. Among promising gas-sensing materials, CuFe2O4exhibits suitable thermal stability. It is easily produced and has low toxicity. Its performance can be enhanced using heterogeneous ion doping to increase the number of surface defects and content of adsorbed oxygen. Therefore, a solvothermal method was adopted in this study to prepare CuFe2O4hollow microspheres that were subsequently doped with different ratios of Sn4+or Sn2+. Detailed characterizations of the obtained materials were conducted, and the corresponding CuFe2O4-based gas sensors were fabricated. Their gas-sensing performance against DMMP was studied to analyze and discuss the gas-sensing and sensitization mechanisms associated with Sn4+and Sn2+doping. The CuFe2O4-based sensor doped with 2 mol% Sn2+exhibited excellent gas-sensing performance in response to a 1 ppm concentration of DMMP, with response and recovery times of 12 and 63 s, respectively. Notably, its response to 1 ppm DMMP (16.27) was 3.3-fold higher than that to 1 ppm 2-CEES (4.98). The doped CuFe2O4sensor exhibited superior response–recovery characteristics and enhanced moisture resistance compared to the undoped sensor.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2023
·
IF 6.1
Yiting Ma,Xilang Jin,Jin Yang,Zhifeng Deng,Haiyan Bai,Yulong Li,Hongwei Zhou,Mengyao She,Weixing Chen
Tin (Sn) element plays a vital role in the human body, and its detection is a mandatory inspection item for canned food. The application of covalent organic frameworks (COFs) in fluorescence detection has received extensive attentions. In this work, we designed a kind of novel COFs ( COF-ETTA-DMTA ) with high specific surface area (353.13 m 2 /g) by solvothermal synthesis using 2,5-dimethoxy-1,4-dialdehyde and tetra (4-aminophenyl) ethylene as precursors. It shows fast response time (about 50 s), low detection limit (228 nM) and good linearity (R 2 = 0.9968) for the detection of Sn 2+ . Via coordination behavior, the recognition mechanism of COFs toward Sn 2+ was simulated and verified by the small molecule with the same functional unit. More importantly, this COFs was successfully applied to identify Sn 2+ in solid canned food (luncheon pork, canned fish, canned red kidney beans) with satisfactory results. This work provides a new approach for determining metal ions with COFs taking the advantage of their natural rich reaction set and specific surface area, improving the detection sensitivity and capacity.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2024
·
IF 2.2
Cao Yang,Zhang Yong,Wei Wei,Wang Chen,Zhao Xiaoyu,Chen Xudan,Lu Zhenhao
Organic–inorganic metal halides have recently garnered significant interest owing to their excellent photoluminescence performance and high stability. Therefore, a synthetic procedure was designed here to obtain (PPZ)ZnBr 4 (PPZ = 1-phenylpiperazine) nanocrystals (NCs) incorporating Pb 2+ and Sn 2+ ions, obtaining blue and orange light emitters, respectively. Photoluminescence quantum yields of blue and orange emissions were up to 43.2% and 29.9%, respectively, under 365-nm excitation. The prepared NCs also demonstrated long-term stability and humidity resistance. This study not only provided a deep comprehension of low-dimensional perovskites, but also established an avenue for the strategic design of high-performance light-emitting perovskites.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 8
·1-11
·
IF 5.7
Liao Linhong,Lin Xiao,Wang Kai,Hu Zhiyuan,Wu Fengshou
The preparation of nitrogen and sulfur co-doped carbon dots (N, S-CDs) with highly bright orange-red fluorescence is reported through a facile solvothermal approach with naphthalenetetracarboxylic dianhydride as starting material. The N, S-CDs exhibited superior properties, including intense long-wavelength emission with a narrow full width at half maxima (FWHM) of 33 nm, high fluorescence quantum yield (QY) of 60.5% in aqueous solution, excitation-independent emission behavior, and excellent water dispersibility. In addition, sulfide ions (S 2− ) could selectively recover the fluorescence of N, S-CDs quenched by Sn 2+ . The selective experiment suggested that the N, S-CDs/Sn 2+ complex could be used as a fluorescence-enhancement sensor for sulfide ions (S 2− ), with the linear range of 5–50 μM and the LOD of 0.35 μM. The practicality and feasibility of this sensor for the determination of sulfide ions in tap and lake water were verified with good recoveries. Furthermore, because of their highly bright fluorescence and strong water solubility, the N, S-CDs could be easily fabricated into fluorescent ink and transparent films, demonstrating the promising application in anti-counterfeiting. Therefore, the designed N, S-CDs exhibited the advantages of facile preparation, intense fluorescence, high stability, easy processing, and selective fluorescence change for specific analytes, which showed high potential in fluorescence detection and anti-counterfeiting. Graphical abstract
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FLUORESCENCE
·
2023
·Vol. 33
·期 4
·1505-1513
·
IF 2.7
Wu Sifei,Fang Linxia,Li Yihan,Wang Hai-Bo,Zhang Hongding
Changes in Sn 2+ and glycine levels are relevant to many important physiological procedures in human health. However, investigation of their physiological functions is limited because few versatile methods towards Sn 2+ and glycine detection have been developed. In this work, a fluorescence turn on–off-on strategy was firstly constructed for rapid and sensitive detection of Sn 2+ and glycine through the specific binding between Sn 2+ and glycine. Carbon nanodots (CDs) with a quantum yield of 19.5% were synthesized by utilizing inner film of waste eggshell as carbon source and employed as fluorescent probe. In the presence of Sn 2+ , the fluorescence of CDs was quenched by Sn 2+ via the primary inner filter effect (IFE). However, the binding between Sn 2+ and glycine prevented the IFE between Sn 2+ and CDs, resulting in fluorescence recovery of CDs. Under optimized conditions, the fluorescent response of CDs displayed good linear relationships with the concentrations of Sn 2+ in the range of 10–200 µM and 200–5000 µM, and the limit of detection (LOD) was 2.4 µM. For glycine detection, a good linear relationship was obtained in the concentration range of 5–1000 µM with a low LOD down to 0.76 µM. Moreover, the practicability of the assay was also demonstrated by measuring glycine content in human serum samples. This work provides an economical, green and fast method for biological analysis of Sn 2+ and glycine.
研究领域:
分析化学
·
生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE SCIENCES
·
2022
·
IF 3.752
Peijie Weng,Qing Cai,Linfeng Zhang,Huadong Wu,Kun Wu,Jia Guo
In this study, the Mo -doped hollow hierarchical Bi/BiOBr microspheres are prepared by the solvothermal method with the Sn 2+ as reductant. The prepared composites show a good degradation effect for ciprofloxacin (CIP) under visible light. Especially, the BSM-22 composite show the best photocatalytic activity, with the apparent rate constant k as high as 0.03014 min −1 , which is 26.9 times that of the pure BiOBr. It is assumed that the introduction of Sn 2+ facilitate the formation of hollow hierarchical microspheres structure of BiOBr microspheres and the appearance of metallic Bi on the surfaces. Therefore, the transfer and separation efficiency of photogenerated charges is increased in the composites. Impressive, benefit from the microtopography of the hollow structure, the specific surface area of the BSM-22 (53.476 m 2 /g) is 21.76 times than that of the BiOBr (2.458 m 2 /g). The doping of Mo reduces the band gap of BiOBr (exactly from 2.61 to 1.96 eV) and broaden the photoabsorption region. Therefore, the photocatalytic activity of the Mo -doped Bi/BiOBr microspheres are heavily improved in dealing with different kinds of antibiotic molecules. More importantly, these results show that the design strategies of heteroatom doping, metal bismuth production, and morphology control of the bismuth oxybromide composite can greatly improve the visible-light catalytic activity.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2023
·
IF 3.6
Yuan Li,Jiamei Shen,Yawei Shen,Yanfeng Li,Kai Luo,Lei Wu
A novel and efficient tandem SN2 nucleophilic substitution/Dieckmann condensation reaction of α-iodomethyl phosphine oxide with methyl thiosalicylate derivatives has been developed by using NaOH as a base, which enables the expeditious synthesis of 2-phosphonyl-3-hydroxybenzo[b]thiophene derivatives in moderate to high yields under simple conditions. This research provides not only a convenient method for the functionalization of benzo[b]thiophenes at the 2-position and 3-position but also new organophosphorus molecules. Furthermore, several new phosphonyl-substituted benzo[b]thiophenes were obtained from the resultant 2-phosphonyl-3-hydroxybenzo[b]thiophenes.
研究领域:
有机化学
·
药物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER BULLETIN
·
2022
·Vol. 80
·期 1
·495-514
·
IF 2.843
Chen Xiuqiong,Zhu Qingmei,Liu Zhaowen,Zhang Tong,Gong Cuiyu,Li Juan,Yan Huiqiong,Lin Qiang
To change the strong hydrophilicity of alginate and make it have good amphiphilic property, thereby broadening its application as a new pesticide-controlled release system, the hexyl alginate ester derivative (HAED) was synthesized by the bimolecular nucleophilic substitution (S N 2) reaction, using 1-bromohexane as the hydrophobic modifier. The structure and self-aggregate performance of the synthesized HAED were contrastively characterized. Moreover, the loading and release performance of λ-Cyhalothrin (LCH) for the HAED microcapsules prepared by the high-speed shearing method was also studied. The synthesized HAED exhibited enhanced molecular flexibility and good self-aggregate performance, which could form the stable self-aggregated spherical micelles with the average hydrodynamic diameter and zeta potential of 416 nm (PDI = 0.29) and − 39.9 mV, respectively, due to the intra- or intermolecular hydrophobic associations. Furthermore, the obtained HAED microcapsules displayed the high encapsulation efficiency and sustained-release property in comparison with the SA microcapsules for the good affinity of HAED to hydrophobic LCH that retarded the drug diffusion. On the basis of the excellent advantages of HAED, it was expected to become the ideal candidate for hydrophobic drug delivery in controlled-release pesticide formulations.
研究领域:
农药化学
·
材料科学
·
药物传递系统
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2023
·
IF 4.1
Jing Zhao,Fangfang Wu,Xiuxun Han
Precursor design plays an important role in preparing high-quality Cu 2 ZnSn(S, Se) 4 (CZTSSe) absorber layers via solution coating method. In this work, SnCl 4 and SnCl 2 with different molar ratios were utilized as Sn source in the precursor solution to investigate effects of Sn oxidation state on the film growth process and the related solar cell device performance. Sn 4+ -rich and Sn 2+ -rich precursors were found to follow different reaction paths in obtaining CZTSSe grains, thus resulting in quite different crystallinity and morphology of the absorber. For Sn 4+ -rich precursor system, the direct Se substitution reaction of macroscopically disordered CZTS precursor calls for relatively high temperature to eliminate the double-layer structure and form large-size CZTSSe grains. For Sn 2+ -dominated precursor solution, however, the reaction of binary compound phases with the catalysis of low-melting-point Sn(S, Se) 2 prefers relatively low temperature during the selenization process. The work demonstrates that both types of precursors (or reaction paths) could actually lead to high-quality CZTSSe absorbers and solar cell devices with conversion efficiency higher than 8%, upon the proper selection of selenization conditions.
研究领域:
材料科学
·
太阳能
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 8
·3376-3380
·
IF 9.931
Guangbao Wu,Yufeng Xue,Lei Wang,Xin Wang,Guangming Chen
Thermoelectrochemical (TEC) materials are newly developed energy materials, which are promising and cost-effective in harvesting waste thermal energy based on redox electrolytes. However, liquid-state electrolytes and low thermoelectric (TE) performance seriously limit their application. Here, we report the first gel-state TEC (gel-TEC) materials based on incorporating Sn2+/Sn4+ electrolytes into polymer/single-wall carbon nanotube (SWCNT) composites. A porous 3D network morphology is observed, and the effect of SWCNT content on the tensile mechanical properties and TE performance is studied. Due to their large Seebeck coefficients and significantly enhanced electrical conductivities (10.5 ± 0.8 S m−1), the power factor at room temperature can reach 13.5 ± 3.0 μW m−1 K−2, greater than those of liquid-state TEC materials and possibly the highest for gel-TEC materials. The gel-state, outstanding mechanical properties and excellent TE performance of the gel-TEC materials will speed up and widen their application in various fields such as flexible devices, wearable electronics, e-skins, etc.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）