INORGANIC CHEMISTRY
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2025
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IF 4.7
Yumiao Niu,Yan Xiao,Yidan Chen,Chu Chu,Daqing Yang,Ying Wang,Bing-Bing Zhang
The disulfide dianion [S2]2–, as an important structural motif in sulfides, can incorporate isolated S2– to form homoatomic heteroleptic polyhedra [MSx(S2)y]. However, the sulfides that contain [MSx(S2)y] units have been rarely reported and have not been systematically investigated as infrared (IR) nonlinear optical (NLO) materials. It is verified in this work that the homoatomic heteroleptic coordination strategy enhances local structural asymmetry, leading to improved optical anisotropy and NLO performance. Three compounds, namely, ANb2PS10(A = K,Rb,Cs), were identified and prepared. They exhibit a large phase-matchable second-harmonic generation (SHG) response, with KNb2PS10, RbNb2PS10, and CsNb2PS10 showing the effects of 1.5, 2.2, and 1.8 (×AgGaS2@2090 nm), respectively, and large birefringence (Δn = 0.39@546 nm) with KNb2PS10 as a representative. The first-principles calculations indicate that [Nb2S4(S2)4]8– units play a dominant role in inducing strong SHG responses and large birefringence. By validating the homoatomic heteroleptic coordination strategy, this work opens avenues for the design of advanced optical materials.
研究领域:
材料科学
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光学材料
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无机化学
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非线性光学
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.7
Huitian Zhi,Lingwei Bu,Ruhui Shang,Xujie Wang,Yingchao Yang,Wanyu Zhang,Zhengquan Yan,Lei Hu
Food health and safety is one of the hottest topics to affect human life nowadays. To reliably detect toxic S 2− and to normalize bioactive ascorbic acid (AA), a kind of tiny CuO/CeO 2 modified bovine serum albumin (CuO/CeO 2 @BSA) was prepared under microwave-assisted conditions. Not only did the modification of BSA to CuO/CeO 2 nanospheres endow CuO/CeO 2 @BSA with high stability and an average mesoporous pore of 3.88 nm, it exhibited outstanding oxidase-like activity to catalyze the oxidization of 3,3′,5,5′-tetramethyl benzidine (TMB) with V max / K m of 0.15 mM/5.96 × 10 −8 M·s −1 . The presence of trace S 2− or AA could exclusively deteriorate the characteristic UV–vis absorbance intensity at 652 nm ( A 652 ) of CuO/CeO 2 @BSA-TMB with obvious hypochromic effect from dark blue to light blue. Under the optimal oxidase-mimic conditions, CuO/CeO 2 @BSA-TMB was applied for potable UV–vis spectral/smartphones-assisted red-green-blue (RGB) monitoring of S 2− or AA in complex agricultural products with detection limits as low as 9.2 × 10 −9 /4.0 × 10 −8 M or 6.1 × 10 −8 /7.2 × 10 −8 M. The analysis accuracy was reliable from comparing their F and t values and the detection mechanisms were proposed. It will shed a potential for portable monitoring of analytes in food samples practically.
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CHEMICAL PHYSICS LETTERS
·
2016
·
IF 1.86
Nai-Di Tan,Jian-Hang Yin,Guang Pu,Yaqing Yuan,Lei Meng,Na Xu
A novel polyethylenimine (PEI)-salicylaldehyde (SA) fluorescence probe, simply prepared by stirring procedure, can sensitively detect Zn 2+ (25 nM) and Cd 2+ (10 nM) in aqueous solution. Formation of metal-to-ligand complexes (Zn 2+ @PEI-SA and Cd 2+ @PEI-SA) between ions and Schiff base generate a new emission at 454 nm, which increase with the concentration of the ions (turn-on). Furthermore, after adding S 2− into the complexes, we can distinguish them due to the fluorescence quenching for Cd 2+ @PEI-SA (turn-off). Both response times for turning on and off the fluorescence are less than 1 min.
研究领域:
分析化学
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环境科学
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材料科学
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荧光传感
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Fanghai Liu,Hui Jiang,Zhanchuang Lu,Yanpeng Gao,Jiafa Li,Lin Zhou,Syed Aamir Hussain,Ping Chen,Xianghua Wang,Lei Chen
It is promising to develop next-generation indoor and outdoor flexible electroluminescent light sources, as thin as wallpaper, by converting electric energy into light directly based on semiconductor quantum dots (QDs). This work reports a sunlike full-spectrum electroluminescent white light-emitting diode (WLED) fabricated by spin-coating the mixture of yellow-green, red, and blue QDs at once, adopting the device structure of ITO/PEDOT:PSS/PVK(PTAA)/Mixed QDs/ZnO:Mg (AP-ZnO)/Al(Ag). The yellow-green and red QDs are prepared by coating three-layer ZnS shells on the CuInS2 cores, which are synthesized using sulfur powder and dodecanethiol (DDT) as sulfur source, respectively. The blue QDs are prepared by coating three-layer ZnS shells on ZnCuGaS2 cores. The photoluminescence quantum yield (PLQY) of the yellow-green, red, and blue QDs is 82%, 89%, and 83%, respectively. The WLED emits warm white light with a color temperature of 3000 K, chromaticity CIE (0.4228, 0.4287), and color rendering index (CRI) Ra 92.4. The electroluminescence spectrum of the device, whose similarity to the solar spectrum reaches 91.7% in the wavelength region of 450–700 nm, is rich in the red component and poor in the blue component, showing great potential for future healthy lighting applications.
研究领域:
材料科学
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光电子学
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纳米技术
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半导体物理
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照明技术
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Dai Li,Huajie Chen,Yutao Zheng,Sheng Zhou,Fengyuan Yong,Xiangbo Zhang,Kui Wang,Huiyun Wen,Jiyong Wu,Weiming Xue,Saipeng Huang
Sulfur ion (S 2− ) plays a significant and considerable role in many living organisms and ecosystems, while its abnormal content can pose a serious hazard to human health and ecological environment. Hence, it is extremely meaningful to construct a highly sensitive and selective analytical platform for S 2− detection in complex microenvironment, particularly in biological systems. In this study, phosphomolybdic acid and L-Arg were utilized to prepare a new molybdenum doped carbon-dots nanozyme (Mo-CDs) with great peroxidase-like activity by one-step hydrothermal approach. In the presence of H 2 O 2 , Mo-CDs converted 3,3′,5,5′-tetramethyl benzidine (TMB) into blue oxTMB, but S 2− strongly reduced the blue solution to colorless and then brown, which established significant selectivity toward S 2− . Mo-CDs illustrated a wide linear range (2.5 μM–900 μM) and low detection limit (LOD = 76 nM) by ultraviolet and smartphone-assisted visualized colorimetric analysis. Especially, the smartphone-assisted analysis platform successfully realized quick, portable, sensitive and visible identification of S 2− with high recovery (95.7–106.7 %) and excellent specificity in water samples. More importantly, Mo-CDs was developed to antibacterial applications based on good peroxidase-like activity. This research not only constructed a new and efficient carbon-dots nanozyme and a low-cost, portable, visual analysis platform for real-time detection of S 2− , but also proposed a novel design strategy and methodology for exploiting multifunctional nanozyme detection tool with great practical application.
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ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Jing Feng,Lei Feng,Shuo Sun,Xujie Wang,Huitian Zhi,Ruhui Shang,Yingchao Yang,Luyao Wang,Zhengquan Yan,Lei Hu
Background NO 2 − and S 2− are two kinds of common toxic anions widely distributed in environmental water, soil and food products. Human beings have suffered a lot of diseases from intake of excessive NO 2 − or S 2− , i.e ., infantile methemoglobin , cancer and even to death. Although tremendous efforts have been afforded to monitor NO 2 − and S 2− , most were high instrument-depended with complex processing procedures. To keep food safety and to protect human health, it will be a huge challenge to develop a convenient and efficient way to monitor S 2− and NO 2 − in practice. Results A kind of folic acid capping Bi 3+ -doped Ag quantum dots (FA@Bi 3+ -Ag QDs) was developed for the first time by one-pot homogeneous reduced self-assembly. Not only did FA@Bi 3+ -Ag QDs possess intrinsic fluorescent property, it expressed synergistic peroxidase-like activity to catalyze the redox of 3,3′,5,5′-tetramethylbenzidine (TMB) and H 2 O 2 with K m / v max of 0.087 mM/6.61 × 10 −8 M s −1 and 6.42 mM/6.25 × 10 −7 M s −1 respectively. Interestingly, trace S 2− could exclusively alter its fluorescent property and peroxidase-like activity, exhibiting significant hypochromic and “turn-on” fluorescent effects. While trace NO 2 − could make FA@Bi 3+ -Ag QDs-TMB-H 2 O 2 system hyperchromic. Under the optimized conditions, FA@Bi 3+ -Ag QDs were applied for dual-mode recognition of S 2− and visual sensing of NO 2 − in real food samples with satisfactory recoveries, i.e ., 100.7–107.9 %/95.8–104.7 % and 97.2–104.8 % respectively. The synergistic enzyme-mimic mechanism of FA@Bi 3+ -Ag QDs and its selective response mechanisms to S 2− and NO 2 − were also proposed. Significance This represents the first nanozyme-based FA@Bi 3+ -Ag QDs system for dual-mode recognition of S 2− and visual sensing of NO 2 − , well meeting the basic requirement in drinking water set by WHO. It will offer a promising way for multi-mode monitoring of different pollution using the same nanozyme-based sensor.
研究领域:
环境科学
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生物医学工程
·
食品科学
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Xinyu Lan,Tingting Liu,Jianjun Li,Jian Zhu,Junwu Zhao,Guojun Weng
Silver coated gold nanobipyramids (Au NBPs@Ag) have opened up a wide range of applications in sensing based on the etching, due to the fact that a tiny change in shape or composition could directly lead to optical changes. Here, we developed an ultrasensitive surface-enhanced Raman scattering (SERS) method for S 2− sensing by using Au NBPs@Ag as nanoprobes. This strategy was revealed to be related to the redox reaction between S 2− and the silver nanoshell of the Au NBPs@Ag. The silver nanoshell was gradually etched as the S 2− concentration was gradually increased. Meanwhile, the generated Ag 2 S was secondary deposited on the surface of etched Au NBPs@Ag. Thus, the etching of silver shell and secondary deposition of Ag 2 S induced SERS decrease of the nanoprobes, which was not only highly selective toward S 2− but also showed a linear logarithmic dependence on S 2− concentrations from 10 −5 to 10 −8 M, with a limit of detection (LOD) of 4.7 × 10 −8 mol/L. Spike recovery tests in tap water demonstrated recoveries of 104.00%, 98.86%, and 105.32% with relative standard deviations (RSD) between 2.52% and 3.98%, validating high accuracy for S 2− detection. This approach provided a novel SERS strategy for trace sulfide monitoring in drinking water systems.
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MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 8
·1-13
·
IF 6.232
Min Jie,Qu Xiang-Long,Yan Bing
A novel fluorescent and electron-deficient hybrid, N -methylated [Eu (pddb)phen(ox) 0.5 ] n (Eu-MOF-Me) has been prepared via post-synthetic modification. Considering its special luminescent properties and cationic framework, Eu-MOF-Me is developed as a visualized fluorescent probe. Notably, water-stable Eu-MOF-Me exhibits advantages like good structural and fluorescent stability in a wide range of pH value (3.39–10.86), excellent identification ability for F − , I − , and S 2− (it can easily distinguish F − and I − from other halogen ions and can realize naked eye identification of F − , I − , and S 2− ), relatively low detection limits (6.61 μM for S 2− , 7.57 μM for F − ), and reusability. More importantly, it has been utilized for the construction of a Boolean logic gate system. In this system, Eu-MOF-Me serves as the gate, by taking F − , I − , and S 2− as the inputs and fluorescence emission bands (UV380, B437, and R612) as the outputs; some primary logic gates (NOR, IMP, YES, NOT) and the combination of them have been realized. Moreover, we achieved a cascaded logic gate (NOR+OR). For further application, a molecular computing keypad-lock security system has been obtained.
A novel fluorescent and electron-deficient hybrid named Eu-MOF-Me has been prepared via post-synthetic methylation. Considering its special luminescent properties and cationic framework, Eu-MOF-Me was developed as a fluorescent probe for the visual monitoring of important anions. In addition, it was used for the construction of Boolean logic library and a keypad-lock system was achieved
研究领域:
化学
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材料科学
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分子生物学
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INORGANIC CHEMISTRY
·
2016
·
IF 4.82
Yu-Hang Fan,Xiao-Ming Jiang,Bin-Wen Liu,Shu-Fang Li,Wei-Huan Guo,Hui-Yi Zeng,Guo-Cong Guo,Jin-Shun Huang
Two new phases in the Ag–Cd–P–S system containing two second-order Jahn–Teller (SOJT) distorted d10 cations (Cd2+ and Ag+), namely, Ag2Cd(P2S6) (1) and AgCd3(PS4)S2 (2), are obtained via medium-temperature solid-state synthesis. Compound 1 exhibits a two-dimensional layered structure and undergoes a first-order structural phase transition at approximately 280 °C. This outcome can be ascribed to the significant mismatch in the expansion coefficients between Cd–S (Ag–S) and P–P (P–S) bonds evaluated through bond valence theory. The three-dimensional non-centrosymmetric (NCS) framework of 2 is constructed by two types of tetrahedral layers consisting of corner-shared CdS4, AgS4, and PS4 tetrahedra. Compound 2 exhibits second harmonic generation (SHG) intensity of 0.45 times that of commercial AgGaS2 (AGS) at a laser irradiation of 1.85 μm and an optical band gap of 2.56 eV, and no intrinsic vibrational absorption of chemical bonds is observed in the range of 2.5–18.2 μm. Both phase transition in 1 and SHG properties in 2 are closely related to the SOJT distorted d10 cations and diverse phosphorus–sulfur polyanions (PaSb)n−, which together can easily result in NCS distorted structures and interesting properties.
研究领域:
材料科学
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固体化学
·
光学材料
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INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY
·
2020
·
IF 3.827
Xiang Zhou,Yi-Zhou Ye,Mari H. Ogihara,Mika Takeshima,Daiki Fujinaga,Cheng-Wen Liu,Zhen Zhu,Hiroshi Kataoka,Yan-Yuan Bao
Ecdysteroids , insect steroid hormones , play key roles in regulating insect development and reproduction. Hemipteran insects require ecdysteroids for egg production; however, ecdysteroid synthesis (ecdysteroidogenesis) details have not been elucidated. We identified all known genes encoding ecdysteroidogenic enzymes in Nilaparvata lugens and clarified their necessity during nymphal and ovarian development . We confirmed that N. lugens utilized 20-hydroxyecdysone as an active hormone. Assays using heterologous expression of enzymes in Drosophila S2 cells showed conserved functions of enzymes Neverland, CYP306A2, CYP314A1 and CYP315A1, but not CYP302A1. RNA interference and rescue analysis using 20-hydroxyecdysone demonstrated that most of the genes were necessary for nymphal development. The identified N. lugens enzymes showed conserved functions and pathways for ecdysteroidogenesis . Knockdown of ecdysteroidogenic enzyme genes in newly molted females caused failure of egg production: less vitellogenic and mature eggs in ovaries , fewer laid eggs and embryonic development deficiency of laid eggs. Considering the high expressions of ecdysteroidogenic enzyme genes in adults and ovaries, ecdysteroidogenesis in ovaries was critical for N. lugens ovarian development. Our study presents initial evidence that hemipteran insects require ecdysteroidogenesis for ovarian development.
研究领域:
昆虫学
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分子生物学
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生物化学
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jie Wu,Yuanyuan Zhang,Bin Zhang,Siwei Li,Ping Xu
Development of low-cost, efficient, and durable electrocatalysts for the oxygen evolution reaction (OER) is crucial for multiple energy conversions and storage devices. Herein, Zn-doped CoS2 nanoarrays supported on carbon cloth, Co(Zn)S2/CC, are fabricated through a facile sulfidization of CoZn metal–organic frameworks. This precatalyst, Co(Zn)S2/CC, with a well-defined nanoarray structure affords excellent OER catalytic activity (η = 248 mV at 10 mA/cm2) and long-term durability in 1 M KOH. X-ray photoelectron and in situ Raman spectroscopic studies indicate that Co(Zn)S2 undergoes surface reconstruction with the generation of Co(Zn)OOH adsorbed with SO42– at the surface during the OER process. The Zn dopant is calculated to impact on the electronic structure of Co species and further the adsorption of intermediates. This work not only provides a novel method for the synthesis of bimetallic sulfides but also gives insights into the doping effect on the OER performance of transition metal sulfides.
研究领域:
电化学
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材料科学
·
能量转换与存储
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ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Dapeng Xu,Yanning Zheng,Bimei Xie,Youquan Zhang,Zhangfa Tong,Jianhua Sun,Lixia Sun,Guangzhi Zhou,Dankui Liao
Background With the rapid development of industrialization, the excessive emission of S 2− have become increasingly serious, leading to a surge in the content of S 2− in nature. Rapid and accurate detection of S 2− contamination in natural adaptogens is crucial for food safety. Annually, discarded eggshell waste, rich in organic and inorganic materials, poses environmental risks if landfilled. Utilizing waste eggshell membrane biomass for S 2− detection is cost-effective, yet designing biochar materials for sensors requires balancing catalytic enhancement and anti-interference capabilities. Improving the catalytic performance of biochar for colorimetric S 2− detection without metal ion interference presents a challenging issue. Results We first modified biochar (EBc) derived from waste eggshell membranes using a combination of thiourea and ZnS nanoparticles, fabricating ZnS-decorated, S–N co-doped biochar (ZnS-SN-EBc) nanozymes, which were applied for the colorimetric assay detection of S 2− contamination. The addition of thiourea significantly increases the proportion of pyridinic-N in biochar, enhancing the peroxidase-like activity of the nanozyme. The growth of ZnS nanoparticles on the biochar not only enhances the catalytic performance by increasing the S content but also reduces the content of oxidized S, thereby improving resistance to interference. The detection range for S 2− was expanded from 0.1 to 45 μM for EBc to 0.05–225 μM for ZnS-SN-EBc, and the limit of detection improved to 0.0397 μM. Additionally, ZnS-SN-EBc significantly enhanced metal ion interference resistance. S 2− detection in five types of adaptogenic herbs verified the accuracy and practicality of the colorimetric assay, with recovery rates comparable to national standards. Significance We innovatively repurposed waste eggshell membranes to develop a selective and catalytic peroxidase-like nanozyme, ZnS-decorated S–N co-doped biochar (ZnS-SN-EBc). The developed colorimetric assay utilizing ZnS-SN-EBc demonstrates significant potential for the detection of sulfur ions in adaptogenic herbs, thus contributing to both waste resource utilization and the advancement of food safety detection technologies.
研究领域:
环境科学
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食品安全
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材料科学
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生物技术
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高影响因子
危险品化学品经营许可证（带存储）