Nanomaterials
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2024
·Vol. 14
·期 19
·1613
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IF 4.4
Xiaomeng Wang,Hengli Zhu,Yan Liu,Jingyuan Li,Lejia Cao,Jiaren Du,Hengwei Lin
Near-infrared (NIR) persistent luminescence (PersL) materials have attracted extensive attention due to their great promise in medical diagnostics, bio-imaging, night vision surveillance, multi-level anticounterfeiting, and information encryption. To achieve NIR PersL (micro/nano-) materials with the desired properties, a variety of synthesis methods have been employed, including solid-phase reaction and liquid-phase synthesis. Different synthesis methods have different but important effects on the micro/nano-structure, luminescence, and PersL properties of the materials. Moreover, the influence of various synthesis methods on the properties of NIR PersL materials determines the selection of preparation approaches for other new material systems. Taking the representative NIR PersL ZnGa 2 O 4 :Cr 3+ material as an example, four synthesis procedures are applied, namely, high-temperature solid-state reaction (SSR), high-temperature molten salt method (MSM), hydrothermal method (HM), and microwave-assisted solid-state (MASS) method. The structural and luminescent properties of samples made by SSR, MSM, HM, and MASS are compared. Notably, it is revealed that the MASS method can create additional trapping energy levels, which is of great significance for emerging applications. This work demonstrates the different effects of synthesis methods on PersL performance and provides a good guideline for the rapid and reasonable selection of preparation methods for diverse applications.
研究领域:
材料科学
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纳米技术
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生物医学工程
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光学材料
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Zhiyuan Chen,Wenhui Chen,Peipei Han,Jizhou Yang,Zhi Wan,Peng Hu,Feng Teng,Haibo Fan
Compared with traditional photocatalytic materials, hollow nanofibers can show greatly improved photocatalytic efficiency due to their large specific surface area and more surface-active sites. In this work, one-dimensional (1D) hollow ZnGa2O4/ZnO nanofibers were successfully prepared by coaxial electrospinning technology first, and then the effect of Ag photodeposition on the photocatalytic degradation of tetracycline hydrochloride (TC-HCl) was studied. It is found that Ag can improve the light absorption of the Ag@ZnGa2O4/ZnO architecture, and meanwhile an S-scheme heterojunction forms between ZnGa2O4 and ZnO, which can synergistically increase the amounts and reduce the recombination of photogenerated carriers, thereby improving the photocatalytic degradation performance. By optimizing the ratio of different mass fractions of Ag, the maximum degradation rate can reach 0.0708 min−1, which is 22 times that of the TC-HCl self-degradation rate. This work not only provides a new idea for the preparation of a 1D hollow nanofiber heterojunction photocatalyst, but has also prepared an effective catalyst for photocatalytic degradation of TC-HCl.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Laser & Photonics Reviews
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2025
·
IF 10
Chunxuan Chen,Xiaozhou Zheng,Wanyuan Li,Wubin Dai
NIR phosphors based on commercial LED pumping are gained great concerns. However, blue excitation and lack of broadband NIR phosphors are still obstacles. Herein, NIR-II emitting ZnGa 2 O 4 : Fe 3+ , Ni 2+ with autologous defects are designed. Self-PL is associated with intrinsic defects including [GaO 6 ], antisite defects ( G a Z n · $Ga_{Zn}^ \cdot $ ) and oxygen defects ( O i ). Based on efficient energy transfer, ZGO: Fe 3+ , Ni 2+ exhibits broadband NIR-II emission. To improve PL efficiency of Fe 3+ , an oxygen defects repairing engineering via anionic F − -substitution artifice is executed, resulting in high PL quantum efficiency of ≈64.6% and splendid thermal stability (≈75.5%@423K) for ZGOF: Fe 3+ , Ni 2+ . The reduction in local site symmetry after F-substitution splits energy states of Fe 3+ in purely octahedral crystal field also helps to relief the Laporte selection rule and widens excitation/PL spectra with high efficiency. A NIR-II phosphor-converted LED (pc-LED) by combination of ZGOF: Fe 3+ , Ni 2+ and a n UV LED chip via remote ʻcappingʼ packaging strategy with high radiant power is fabricated and its versatile applications in night vision, non-destructive detection, food analysis and optical pressure sensing are demonstrated. This study paves a feasible way to realize high-quality NIR phosphor and its corresponding device for wide applications.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Honghong Feng,Yangjing Zhao,Yeping Li,Xueyong Qi,Song Shen,Shengwang Zhou
Nanotechnology provides the platform to develop functional nanocomposites with outstanding features, such as persistent luminescence (PL), photothermal conversion, magnetic resonance (MR), and so on, that has been incorporated in nanomedicine for diagnosis and therapy. Herein, the nanocomposites of ZnGa2O4:Cr3+ embedded in mesoporous silica coating surrounding gold nanorods (cGNR@MSNs) were developed for the codelivery of chemotherapeutic drugs and anti-CD40 antibodies. The nanocomposites were functionalized with tetrazaheterocycle linking divinylpyrimidine derivatives (DOTVs), which covalently capture anti-CD40 by disulfide re-bridging on the surface of cGNR@MSNs. The anti-CD40-mediated dual drug delivery system simultaneously realized the combination of chemo-, immuno-, and photothermal therapies, enhancing the synergistic effect of combination therapy for multiple tumor cells. Moreover, the nanodrug delivery system achieved multimodality imaging with fluorescence, PL, and MR modes for precise diagnosis. This study provides fascinating insights into the development of nanocomposite-based multimodality imaging strategies and imaging-guided combination therapies.
研究领域:
纳米技术
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纳米医学
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癌症治疗
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成像技术
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产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
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2021
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IF 6.986
Bei-Bei Wang,Xu Zhao,Li-Jian Chen,Cheng Yang,Xiu-Ping Yan
Selective and sensitive determination of trace kanamycin in complex food samples is of great importance for food safety because of its high toxicity. Here, we report a sensitive and autofluorescence-free persistent luminescence (PL) aptasensor for selective, sensitive, and autofluorescence-free determination of kanamycin in food samples. The aptamer for kanamycin was first conjugated onto the surface of magnetic nanoparticles Fe3O4 to serve as the recognition unit as well as the separation element, while the PL nanoparticles ZnGa2O4:Cr (PLNPs) were functionalized with the aptamer complementary DNA (cDNA) as the PL signal. The PL aptasensor consisted of the aptamer-conjugated MNPs (MNPs-apt) and cDNA-functionalized PLNPs (PLNPs-cDNA) and combined the merits of the long-lasting luminescence of PLNPs, the magnetic separation ability of MNPs as well as the selectivity of the aptamer, offering a promising approach for autofluorescence-free determination of kanamycin in food samples. The proposed aptasensor showed excellent linearity in the range from 1 pg mL–1 to 5 ng mL–1 with a limit of detection of 0.32 pg mL–1. The precision for 11 replicate determinations of 100 pg mL–1 kanamycin was 3.1% (relative standard deviation). The developed aptasensor was applied for the determination of kanamycin in milk and honey samples with the recoveries of 95.4–106.3%. The proposed aptasensor is easily extendable to other analytes by simply replacing the aptamer, showing great potential as a universal aptasensor platform for selective, sensitive, and autofluorescence-free detection of hazardous analytes in food samples.
研究领域:
分析化学
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食品科学
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纳米技术
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生物传感器
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产品关联
DOI
PubMed
高影响因子
Small
·
2022
·Vol. 18
·期 21
·2200813
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IF 15.153
Zhanlin Zhang,Hui Yan,Bo Qiu,Pan Ran,Wenxiong Cao,Xinwei Jia,Kun Huang,Xiaohong Li
External light irradiation is usually required in bacterial infection theranostics; however, it is always accompanied by limited light penetration, imaging interference, and incomplete bacterial destruction. Herein, a feasible “image-launching therapy” strategy is developed to integrate real-time optical imaging and simultaneous photodynamic therapy (PDT) of bacterial infections into persistent luminescence (PL) nanoparticles (NPs). Mesoporous silica NPs are used as a substrate for in situ deposition of PL nanodots of ZnGa 2 O 4 :Cr 3+ to obtain mPL NPs, followed by surface grafting with silicon phthalocyanine (Si-Pc) and electrostatic assembly of cyanine 7 (Cy7) to fabricate mPL@Pc-Cy NPs. The PL emission of light-activated mPL@Pc-Cy NPs is quenched by Cy7 assembly at physiological conditions through the fluorescence resonance energy transfer effect, but is rapidly restored after disassembly of Cy7 in response to bacterial infections. The self-illuminating capabilities of NPs avoid tissue autofluorescence under external light irradiation and achieve real-time colorimetric imaging of bacterial infections. In addition, the afterglow of mPL NPs can persistently excite Si-Pc photosensitizers to promote PDT efficacy for bacterial elimination and accelerate wound full recovery with normal histologic features. Thus, this study expands the theranostic strategy for precise imaging and simultaneous non-antibiotic treatment of bacterial infections without causing side effects to normal tissues.
研究领域:
纳米技术
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生物医学工程
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药学
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传染病学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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