MONATSHEFTE FUR CHEMIE
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2019
·Vol. 150
·期 11
·1903-1910
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IF 1.501
Li Zhongqiu,Yang Kunhao,Lv Yueguang,Wang Qingnan,Li Chang,Wu Li,He Yujian
Abstract A novel method, based on modified silver nanoparticles, for high-throughput visual detection of heavy metal ions in polyvinyl chloride (PVC) products was developed including a key pretreatment process in which tetrahydrofuran was used to dissolve PVC powder samples quickly. Heavy metal ions were successfully transferred from THF to the aqueous phase by the liquid–liquid extraction method during the pretreatment procedures. Then, enriched Cu 2+ , Mn 2+ , and Cr 3+ were detected by three kinds of silver nanoparticles (4-MBA-AgNPs, 4-MBA-MA-AgNPs, and 4-NBT/4-MBA-AgNPs) using naked eyes and microplate reader, respectively. The visual detection limits of Cu 2+ , Mn 2+ , and Cr 3+ were 1.0 × 10 −6 M, 1.0 × 10 −7 M, and 1.0 × 10 −6 M, while the detection limits of Cu 2+ , Mn 2+ , and Cr 3+ were 2.5 × 10 −8 M, 5.0 × 10 −8 M, and 5.0 × 10 −8 M using microplate reader, respectively. Apparently, the proposed method could provide a potent means in the practical detection of heavy metal ions in PVC products with advantages of low-cost, rapid, high-throughput, and on-site detection. Graphic abstract
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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产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2022
·
IF 5.122
He Ma,Xiaoming Zhang,Long Pang,Bing Yu,Hailin Cong,Youqing Shen
The high toxicity and side effects of drugs as well as the difficulty of tracking their trends and metabolism have always been the core difficulties of anticancer drugs. In this paper, doxorubicin (DOX) was used as therapeutic drug to coordinate with Mn 2+ to obtain the hydrophobic core of nanomedicine . The outer layer was self-assembled and coated with amphiphilic block copolymer-distearyl phosphatidylethanolamine-polyethylene glycol (DSPE-mPEG2000) to form [email protected] micellar nanoparticles (MDDM NPs) with good dispersion and stability. Cell experiments showed that MDDM micellar nanoparticles could be effectively uptaked by cells in a short time, and had good biocompatibility and tumor inhibition. In vivo experiments have shown that nanoparticles not only have excellent therapeutic effects, but also have magnetic resonance imaging contrast as contrast agents due to Mn 2+ coordination, which can assist in tracking drug trends and metabolism in vivo. The above work provides a certain reference significance for the study of combining organic drugs with metals to realize the reduction of drug toxicity and provide multimodal function of metals.
研究领域:
纳米技术
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癌症研究
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药学
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生物医学工程
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分子成像
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DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Yang Xingru,Sheng Yuhang,Zhang Linglong,Yang Lun,Xing Fangjian,Di Yunsong,Liu Cihui,Hu Fengrui,Yang Xifeng,Yang Guofeng,Liu Yushen,Gan Zhixing
Luminescent materials with multi-emission features are difficult to be replicated, which are highly desirable for advanced anti-counterfeiting. Here, we report the pioneering synthesis of Mn 2+ /Yb 3+ /Er 3+ tri-doped Cs 2 Ag 0.8 Na 0.2 InCl 6 double perovskites (MYE-DP), which exhibit photoluminescence (PL) covering from visible to near-infrared (NIR). The PL colors under excitations of 254 and 365 nm are notably different due to the changed relative emission intensities of self-trapped excitons (STEs) and Mn 2+ d–d transition. Moreover, under the excitation of a NIR laser, the MYE-DP exhibits upconversion (UC) emissions of Mn 2+ and Er 3+ . After ceasing the excitation, the long-lived trapped electrons can be thermally released to Mn 2+ and Er 3+ ions, resulting in both visible and NIR afterglow. Based on multi-modal emissions of the MYE-DP, we demonstrate a five-level anti-counterfeiting strategy, which significantly increases the anti-counterfeiting security. In addition, this work provides valuable insights into the energy transfer between STEs, Mn 2+ , Ln 3+ , and traps, laying a solid foundation for future development of new lead-free perovskites.
研究领域:
材料科学
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光学
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化学
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物理学
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产品关联
DOI
高影响因子
Materials Today Bio
·
2022
·
IF 10.761
Linghong Huang,Sufen Peng,Zonghua Liu,Juncheng Zhang,Ning Liu,Jiansheng Lin
Tumor vaccines can inhibit or eliminate tumors by vaccinating hosts with tumor antigens to activate antigen-specific immune responses and have gained wild attention. However, their clinical application efficacy is often comprised due to the low safety and poor efficiency of vaccine adjuvants/carriers. Specifically, the adjuvants/carriers usually could not efficiently recruit antigen presenting cells (APCs) to capture the vaccines or directly damage these cells. Therefore, ideal tumor vaccine adjuvants/carriers should effectively recruit APCs and be friendly to the cells for well keeping their bio-functions. In this work, injectable natural blood plasma hydrogel was used for the first time to encapsulate tumor antigens and adjuvant (Mn 2+ ) for the construction of a personalized tumor vaccine. This kind of natural hydrogel with extremely high bio-safety has great potential to friendly recruit APCs in a biomimetic manner by simulating the natural degradation process of subcutaneous blood stasis. The obtained results show that the natural blood plasma hydrogel-based tumor vaccines could significantly promote the recruitment of APCs, well maintain the immuno-functions of the cells, and finally induce efficient anti-tumor immune responses. Compared with traditional tumor vaccines, this natural blood plasma-based hydrogel provides a new strategy for the development of safe and effective tumor vaccines.
研究领域:
生物医学工程
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免疫学
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肿瘤学
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Li Yang,Fan Ningbo,Wu Jie,Xu Bin,Li Xuexin,Liu Xuechen,Xiao Yizhou,Hou Dingwei,Feng Xinya,Zhang Jinjing,Zhang Shujun,Li Jinglei,Li Fei
Dielectric ceramics possess a unique competitive advantage in electronic systems due to their high-power density and excellent reliability. Na 1/2 Bi 1/2 TiO 3 -based ceramics, one type of extensively studied energy storage dielectric, however, often experience A-site element volatilization and Ti 4+ reduction during high-temperature sintering. These issues may result in increased energy loss, reduced polarization and low dielectric breakdown electric field, ultimately making it challenging to achieve both high energy storage density and efficiency. To address these issues, we introduce a synergistic optimization strategy that combine polarization engineering and grain alignment engineering. First principles calculations and experimental analyses show that the doping of Mn 2+ can suppress the reduction of Ti 4+ in Na 1/2 Bi 1/2 TiO 3 -based ceramics and enhance ion off-centering displacements, thereby reducing energy loss and improving polarization. In addition, we prepared multilayer ceramic capacitors with grains oriented along the <111> direction using the template grain growth method. This approach effectively reduces electric-field-induced strain by 37% and markedly enhances breakdown electric field by 42% when compared with nontextured counterpart. As a result of this comprehensive strategy, <111 >-textured Na 1/2 Bi 1/2 TiO 3 -based multilayer ceramic capacitors achieve an ultra-high energy density of 15.7 J·cm −3 and an excellent efficiency beyond 95% at 850 kV·cm −1 , exhibiting a superior overall energy storage performance.
研究领域:
材料科学
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电子工程
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电介质陶瓷
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产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-15
·
IF 12.264
Zhai Xian-Zhi,Qu Jin,Hao Shu-Meng,Jing Ya-Qiong,Chang Wei,Wang Juan,Li Wei,Abdelkrim Yasmine,Yuan Hongfu,Yu Zhong-Zhen
A layered sodium-ion/crystal water co-intercalated Na 0.55 Mn 2 O 4 ·0.57H 2 O (NMOH) cathode is synthesized successfully with a selectively etching method for zinc-ion batteries.
A displacement/intercalation mechanism is confirmed in the Mn-based cathode for the first time.
The NMOH cathode delivers a competitive reversible capacity of 201.6 mA h g −1 at 500 mA g −1 after 400 cycles.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2022
·Vol. 11
·期 4
·2202321
·
IF 10.05
Chu-Yao Zhong,Ladi Li,Qing Chen,Kai-Zhe Jiang,Fa-tang Li,Zhao-Qing Liu,Yibo Chen
Doping cesium lead halide perovskite nanocrystals (NCs) with Mn 2+ brings attractive long-wavelength emission and flexible color tunability. However, due to multiple competing factors, the exciton-to-Mn 2+ energy transfer efficiency is low. In this work, a simple structure-optimization strategy is applied to enhance the exciton-to-Mn 2+ energy transfer by synthesizing Mn 2+ activated 3D/0D Cs–Pb–Cl perovskite composition composed of 3D CsPbCl 3 and 0D Cs 4 PbCl 6 NCs. The results reveal that the energy transfer efficiency and the photoluminescence quantum efficiency of the Cs–Pb–Cl composite are 65.3% and 77.3%, respectively, which are 1.4 and 3 times the corresponding values of the single-phase CsPbCl 3 :Mn 2+ NCs. Based on the detailed experimental and calculation results, the performance enhancement is demonstrated to stem from the optimized growth process of 3D CsPbCl 3 NCs when co-generating with 0D Cs 4 PbCl 6 NCs. The strong lattice rigidity of the optimized CsPbCl 3 NCs suppresses the nonradiative combination rate of the excitons, thus alleviating the main competing factor of the energy transfer process and improving the energy transfer efficiency. Fabrication of a white light-emitting diode prototype further illustrates the application potential of the orange-emitting Cs–Pb–Cl composite NCs for general lighting.
研究领域:
材料科学
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纳米技术
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光电子学
·
光子学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 49
·2306626
·
IF 29.4
Xiaobin Yang,Yajie Wen,Yangxue Li,Linlin Yan,Chuyang Y. Tang,Jun Ma,Seth B. Darling,Lu Shao
Pressure-driven membrane separation promises a sustainable energy-water nexus but is hindered by ubiquitous fouling. Natural systems evolved from prebiotic chemistry offer a glimpse of creative solutions. Herein, a prebiotic-chemistry-inspired aminomalononitrile (AMN)/Mn 2+ -mediated mineralization method is reported for universally engineering a superhydrophilic hierarchical MnO 2 nanocoating to endow hydrophobic polymeric membranes with exceptional catalytic cleaning ability. Green hydrogen peroxide catalytically triggered in-situ cleaning of the mineralized membrane and enabled operando flux recovery to reach 99.8%. The mineralized membrane exhibited a 9-fold higher recovery compared to the unmineralized membrane, which is attributed to active catalytic antifouling coupled with passive hydration antifouling. Electron density differences derived from the precursor interaction during mediated mineralization unveiled an electron-rich bell-like structure with an inner electron-deficient Mn core. This work paves the way to construct multifunctional engineered materials for energy-efficient water treatment as well as for diverse promising applications in catalysis, solar steam generation, biomedicine, and beyond.
研究领域:
环境工程
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材料科学
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催化
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水处理
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产品关联
DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2024
·
IF 9.8
Zhengwei Yang,Haolin Lu,Yu Zhang,Baipeng Yin,Hong Wang,Sehrish Gull,Wei Qin,Yongsheng Chen,Jiannian Yao,Chuang Zhang,Guankui Long
Chiral perovskites are considered as promising candidates for circularly polarized luminescence (CPL) light source, by attracting the broader scientific community for their applications in chiral optoelectronics and spintronics. However, it is still a great challenge to achieve both substantial photoluminescence asymmetry ( g CPL ) and high photoluminescence quantum yield (PLQY) simultaneously for high CPL brightness due to the limitations associated with magnetic transition dipole moments. Herein, this problem is overcome and achieve both large g CPL of 1.6×10 −2 and PLQY of 56% in chiral perovskite through the magnetic element doping strategy. The substitution of Pb 2+ ion with smaller magnetic Mn 2+ ions shrinks the crystal lattice around [MnBr 6 ] 4− octahedra, amplifying the asymmetric distortion surrounding the Mn 2+ ions. Moreover, the transition associated with Mn 2+ ions can harvest the photoexcitation energy in chiral perovskites, and its spin-flipping characteristics enable highly efficient CPL from the d–d transition on Mn 2+ energy levels. Furthermore, this magnetic element doping strategy is proven to be a universal tactic for enhancing CPL brightness as confirmed in a series of 1D- or 2D-chiral perovskites with various chiral ligands or halogens. The findings provide an in-depth understanding of the structure-property relationship in chiral perovskites toward chiral optoelectronic and spintronic applications.
研究领域:
材料科学
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光电子学
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自旋电子学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Xiaowei Deng,Shanshan Cheng,Xu Chen,Meng Wang,Xu Li,Gaoqiang Li,Dongyang Zhu,Mochen Jia,Xinjian Li,Zhifeng Shi
Lead-free perovskite is a non-toxic and environmentally friendly material, which plays an increasingly significant role in photodetection, luminescence, photovoltaics and so on. In this paper, a single-component white light emission is successfully achieved through the co-doping of Sb 3+ , Mn 2+ and Tb 3+ in Cs 2 NaInCl 6 . The photoluminescent mechanism is proved through the spectra measurements and decay dynamics. The addition of Sb 3+ could activate the self-trapped exciton (STE) emission of the matrix (blue light at 450 nm). The efficient energy transfer from STE emission could realize red light emission of Mn 2+ , and green light emission of Tb 3+ . The single-component white light emission is obtained with the Commission Internationale de L'Eclairage of (0.31, 0.35), high color rendering index of 88.1 and correlated color temperature of 6394 K. Finally, the prepared white light emitting diodes demonstrate high performance and excellent stability. This provides a new idea for development of lead-free perovskite white luminescent materials in display and lighting applications.
研究领域:
材料科学
·
光子学
·
光电
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jiansheng Lin,Xin Cui,Zonghua Liu,Yideng Jiang,Linghong Huang
To meet the multiple demands of myocardial repair, it would be a novel strategy for myocardial repair if multiple drugs could be constructed into an integrated multifunctional drug formulation. In this study, four drugs with different functions (thioctic acid with antioxidant effects, quercetin with anti-inflammatory and antioxidant effects, arginine with pro-angiogenic effects, and Mn 2+ with imaging functions) were selected to construct a four-in-one injectable hydrogel (thioctic acid-arginine-quercetin-Mn 2+ ) through chemical bonding and supramolecular interactions. First, thioctic acid polymerized to a redox-sensitive degradable polymer—poly(thioctic acid) containing disulfide bonds in the main chains through ring-opening polymerization. Quercetin was conjugated to the main chain of the poly(thioctic acid) molecules via thiyl radical-polyphenol Michael addition. Arginine cross-linked the carboxyl groups side chains of the poly(thioctic acid) molecules through hydrogen bonding. Mn 2+ further cross-linked the carboxyl groups' side chains of the poly(thioctic acid) molecules through ionic bonding. The hydrogel has antioxidant properties, promotes neovascularization, inhibits inflammatory, improves intracellular Ca 2+ overload and mitochondrial dysfunction, protects adenosine triphosphatase (ATPase) activity, and maintains intracellular energy supply, which can reduce the size of myocardial infarcts, and improves cardiac function. This construction method of preparing integrated multifunctional hydrogels from natural drugs will provide a new therapeutic strategy for myocardial repair.
研究领域:
药学
·
材料科学
·
心脏病学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Dedan Mu,Tianchi Wang,Junheng Yuan,Lulu Han,Hao Song,Shuyi Yao,Bin Meng,Ting Wang,Xuhui Xu
X-ray detection is vital in various fields such as medical imaging, security screening, and materials analysis. However, to meet the diverse detection requirements across different scenarios, current scintillators used for X-ray detection encounter challenges in both immediate and delayed radiation detections. In this work, flexibly controlling trap distribution through extra ions doping into Cs 2 NaTbCl 6 lead-free perovskites presents a promising avenue for addressing these challenges and advancing X-ray dose detection capabilities across diverse scientific domains. By doping Sb 3+ ions into the Cs 2 NaTbCl 6 host, the traps are significantly passivated through improved crystallinity, resulting in the suppression of afterglow behaviors and endowing the high-resolution real-time dynamic X-ray detection. Additionally, the incorporation of Mn 2+ into the Cs 2 NaTbCl 6 matrix causes significant lattice distortion, leading to increased concentrations of both shallow and deep traps, effectively boosting delayed X-ray detection efficiency. This work may provide an effective strategy for constructing efficient scintillators for the realization of multi-environmental X-ray imaging.
研究领域:
材料科学
·
放射学
·
医学成像
·
安全检查
·
材料分析
✓ 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）