JOURNAL OF BIOMATERIALS APPLICATIONS
·
2024
·
IF 2.3
Yuchang Qin,Yuanyuan Xu,Fuli Lin,Yinwei Qiu,Yujie Luo,Xuan Lv,Tianyu Liu,Yongsheng Li,Zhiyong Liu,Shengchao Yang
Brucellosis is an intracellular infectious disease that is primarily treated with antibacterial therapy. However, most antibacterial drugs struggle to penetrate the cell membrane and may be excluded or inactivated within the cell. In a recent study, researchers developed a nanogel coated with polydopamine (PDA) that responds to reactive oxygen species (ROS) and has enhanced adhesion properties. This nanogel encapsulates photosensitized zinc phthalocyanine (ZnPc) and an antibacterial drug, and is further modified with folic acid (FA) for active targeting. The resulting ROS-responsive nanogel, termed PDA@PMAA@ZnPc@DH-FA, can reach temperatures up to 50°C under near-infrared light, leading to a 72.1% improvement in drug release through increased ROS production. Cell staining confirmed a cell survival rate above 75%, with a low hemolysis rate of only 4.633%, indicating excellent biocompatibility. Furthermore, the study’s results showed that the nanogel exhibited stronger killing effects against Brucella compared to administering the drug alone. Under near-infrared irradiation, the nanogel achieved a bacteriostatic rate of 99.8%. The combined approach of photothermal therapy and photodynamic therapy offers valuable insights for treating Brucella.
研究领域:
医学
·
生物材料学
·
感染病学
✓ 已验证
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jianfang Hu,Hao Song,Mengjie Sun,Bo Wang,Xuchun Wang,Qingsong Guo,Han Li,Shuangjie Wu,Li Huang,Yun Li,Xuming Zhang
The photoelectronchemical (PEC) activity of the photocatalyst is largely dependent on the concentration and lifetime of the photogenerated carriers, however, these carriers are easily and quickly neutralized within the photocatalyst. To address this issue, we designed a superstructure of graphene-intercalated TiO 2 nanoparticles (TiO 2 /G) by pyrolyzing octylamine-intercalated hexafluorotitanic acid hybrids. The inserted graphene accelerates photoelectron transfer and reduces the recombination of photogenerated carriers in the body, while maintains the structural stability. The TiO 2 /G hybrid composite exhibits a low carbon content of only 1.3 wt.%, a strong Ti-C chemical interaction between TiO 2 and intercalated graphene, and a large surface area of 38.88 m 2 /g, nearly five times that of bare TiO 2 (7.96 m 2 /g). The findings from the photocatalytic experiments indicate that the photocatalytic efficiency and photocurrent response of TiO 2 /G are twice and 4.22 times higher, respectively, compared to standard TiO 2 nanoparticles. This indicates a substantial promise for the superstructure in photoelectrochemistry and energy conversion applications.
研究领域:
材料科学
·
能源转换
·
光催化
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 5
·2102148
·
IF 10.05
Yilin Jiang,Honghan Fei
Intrinsic blue emission with high stability and high efficiency remains to be a great challenge for metal halide hybrids. In this study, a single-crystalline, ultrastable self-trapped blue-light emitter based on 1D cationic [Pb 2 Cl 2 ] 2+ haloplumbate chains is discovered, which affords a Stokes shift of 78 nm and Commission Internationale de l'Eclairage chromaticity coordinates of (0.156, 0.080), very close to blue standard (0.140, 0.080). The Stokes shift is the lowest reported value among the intrinsic self-trapped emission from the vast majority of organometal halide hybrids. Moreover, the presence of out-of-plane chloride results in highly localized self-trapped excitons in 1D cationic chains and high photoluminescence quantum yield of 72%, which exceeds many intrinsic blue-light-emitting metal halide materials. Analogous to the previously reported organocarboxylate-based lead halide hybrids, the material exhibits ultrastable continuous photoemission in air for at least 24 h and maintains the efficient emission after a variety of thermal or chemical treatments. The excellent blue-light-emitting performance of the material enables its promising applications in high-definition lighting and display fields.
研究领域:
材料科学
·
光电子学
·
无机化学
·
固体物理
·
光子学
✓ 已验证
DOI
高影响因子
Frontiers of Materials Science
·
2025
·Vol. 19
·期 3
·1-11
·
IF 2.3
Sheng Yang,Qing Danni,Zhang Peng,Sun Yixin,Zhang Rong
Tetra-aminophenyl porphyrin (TAPP)-grafted Zn–Ag–In–S quantum dots (ZAIS QDs)/poly(maleic anhydride- alt -1-octadecene) (PMAO) nanoparticles were synthesized and their photoluminescence properties as well as photodynamic properties were studied. ZAIS QDs showed the brightest photoluminescence and highest quantum yield at an optimized Zn feeding molar ratio of 20%. Those TAPP-grafted nanoparticles (i.e., ZAIS/PMAO- g -TAPP) were able to produce 1 O 2 in aqueous solution under light irradiation as indicated by the 1 O 2 indicator, 9,10-anthracenediyl-bis(methylene) dimalonic acid (ADMA). ZAIS/PMAO- g -TAPP nanoparticles also demonstrate good biocompatibility and low dark toxicity even at a concentration as high as 2.8 mg·mL −1 , whith can be applied as both a fluorescence probe and a photodynamic therapy (PDT) agent. The PDT treatment showed that the viability of melanoma A2058 cells was less than 10% after treatment with the 420 nm light irradiation for 15 min at a photosensitizer concentration of 1.7 mg·mL −1 . During the PDT treatment with Escherichia coli , the survival rate of the bacteria decreased by −95% after light irradiation at the same concentration. Such dual-functional ZAIS/PMAO- g -TAPP nanoparticles researched in this study demonstrate promising potential for fluorescence labeling as well as effective PDT treatment against cancer cells and bacteria.
研究领域:
纳米技术
·
光动力治疗
·
材料科学
·
生物医学工程
·
微生物学
·
肿瘤学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 25
·9816-9821
·
IF 8.262
Li Cheng,Qing Chang,Yu Chang,Nannan Zhang,Changyuan Tao,Zhaona Wang,Xing Fan
Hierarchical forest-like photoelectrodes were prepared by assembling nano-ZnO on an array of micro-metal dendrites, aiming to demonstrate the idea of highly efficient photon-harvesting inside a biomimetic dendrite structure. Via a facile aqueous electrochemical deposition process, the metal dendrites were deposited on both flat and wire substrates with different alignments, showing wide adaptability. A strong, broadband anti-reflection effect was observed, owing to the diffuse reflection inside the microdendrites. By increasing the dendrite height, the overall reflectivity of the metal electrode can be reduced from 75% to 45%, which could be further reduced to 12% after combining with acicular-leaf-like ZnO nanoarrays. Its applications in light-driven water splitting were successfully demonstrated. Taking advantage of the forest-like photoelectrode, we have artificially constructed an efficient photo-electrochemical system similar to plants in a forest, with photons harvested by the crown-like photoanodes in the sunshine, and synthetic reactions driven by the root-like electrode in the shadow.
研究领域:
材料科学
·
纳米科技
·
光电化学
·
可再生能源
·
仿生学
✓ 已验证
DOI
高影响因子
Frontiers of Optoelectronics
·
2024
·Vol. 17
·期 1
·1-11
·
IF 4.1
Li Qi,Bai Ruijie,Guo Lianbo,Gao Yang
A highly sensitive temperature sensing array is prepared by all laser direct writing (LDW) method, using laser induced silver (LIS) as electrodes and laser induced graphene (LIG) as temperature sensing layer. A finite element analysis (FEA) photothermal model incorporating a phase transition mechanism is developed to investigate the relationship between laser parameters and LIG properties, providing guidance for laser processing parameters selection with laser power of 1–5 W and laser scanning speed (greater than 50 mm/s). The deviation of simulation and experimental data for widths and thickness of LIG are less than 5% and 9%, respectively. The electrical properties and temperature responsiveness of LIG are also studied. By changing the laser process parameters, the thickness of the LIG ablation grooves can be in the range of 30–120 μm and the resistivity of LIG can be regulated within the range of 0.031–67.2 Ω·m. The percentage temperature coefficient of resistance (TCR) is calculated as − 0.58%/°C. Furthermore, the FEA photothermal model is studied through experiments and simulations data regarding LIS, and the average deviation between experiment and simulation is less than 5%. The LIS sensing samples have a thickness of about 14 μm, an electrical resistivity of 0.0001–100 Ω·m is insensitive to temperature and pressure stimuli. Moreover, for a LIS-LIG based temperature sensing array, a correction factor is introduced to compensate for the LIG temperature sensing being disturbed by pressure stimuli, the temperature measurement difference is decreased from 11.2 to 2.6 °C, indicating good accuracy for temperature measurement. Graphical
研究领域:
材料科学
·
纳米技术
·
传感器
·
光电子学
·
热分析
·
微纳加工
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry Letters
·
2023
·
IF 5.7
Yacong Li,Chuying Wang,Guangyong Xu,Guigen Luo,Zhengtao Deng
The absorption and photoluminescence (PL) of CsMnBr3 with Mn(II) in octahedral crystal fields are extremely weak due to a d–d forbidden transition. Herein, we introduce a facile and general synthetic procedure that can prepare undoped and heterometallic doped CsMnBr3 NCs at room temperature. Importantly, both PL and absorption of CsMnBr3 NCs were significantly improved after doping a small amount of Pb2+ (4.9%). The absolute photoluminescence quantum yield (PL QY) of Pb-doped CsMnBr3 NCs is up to 41.5%, 11-fold higher than undoped CsMnBr3 NCs (3.7%). The PL enhancement is attributed to the synergistic effects between [MnBr6]4– units and [PbBr6]4– units. Furthermore, we verified the similar synergistic effects between [MnBr6]4– units and [SbBr6]4– units in Sb-doped CsMnBr3 NCs. Our results highlight the potential of tailoring luminescence properties of manganese halides through heterometallic doping.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
无机化学
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry Letters
·
2022
·
IF 6.888
Mengyuan Liu,Le Ma,Kehan Xie,Piaopiao Zeng,Shijing Wei,Feng Zhang,Chao Li,Feijiu Wang
Cesium lead halide perovskite (CsPbX3, X = Cl, Br, and I) nanocrystals (NCs) have attracted enormous attention because of their great potential for optoelectronic applications, such as light-emitting diodes (LEDs). However, the photoluminescence and surface ligands of CsPbX3 NCs have a great impact on their device applications. Herein, we report a molecular superacid of bis(trifluoromethane)sulfonimide (TFSI), which could boost the photoluminescence in the metal halide perovskite nanocrystals. In particular, the photoluminescence quantum yield (PLQY) of CsPbI3 nanocrystals could be greatly improved from 28.6% to near 100% with the superacid treatment. The improved PLQY in CsPbX3 nanocrystals is mainly contributed from the surface passivation based on the characterizations. The CsPbX3 nanocrystals were further modified with PMMA, which could greatly improve their stability while preserving high photoluminescence and good dispersion. The use of superacid combined with a polymer for improving the photoluminescence and stability in CsPbX3 provides an alternative strategy for optoelectronics.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 26
·14164-14170
·
IF 2.936
Bin Ma,Xiaoqin Ma,Tonghui Xu,Ke Su,Qianxin Zhang
Ca9La1−x(PO4)7:xSm3+ phosphors (0.01 < x < 0.25) were synthesized via high temperature solid-state reaction. Their properties including crystal structure, decay performance, thermal stability and photoluminescence were examined in detail. Phase analysis indicated that the phosphors crystallized in a rhombohedral structure, and the emission spectra of the phosphors consisted of four peaks centered around 570, 607, 653, and 714 nm, attributed to Sm3+ ions transitions 4G5/2 → 6HJ (J = 5/2, 7/2, 9/2, and 11/2, respectively). The optimal Sm3+ doping content was 0.12 mol and the Ca9La(PO4)7:Sm3+ phosphor also exhibited better thermal stability compared to other phosphors. In addition, the mechanism behind the energy transfer between Sm3+ ions was determined to be dipole–dipole interactions as described by Dexter theory. The results indicated that as orange-red phosphors, Ca9La (PO4)7:Sm3+ phosphors were promising candidates for being integrated into white light emitting diodes.
研究领域:
材料科学
·
无机化学
·
固体物理
·
发光材料
·
光电子学
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2021
·
IF 3.599
Chenwei Xu,Chenxia Li,Degang Deng,Hua Yu,Le Wang,Changyu Shen,Xufeng Jing,Shiqing Xu
A series of new double perovskite structure CaLaMgTaO 6 : Bi 3+ , Eu 3+ phosphors were synthesized by high-temperature solid-phase method. The crystal structure, luminescence characteristics and temperature sensing performance have been systematically studied. The substitution rule of Bi 3+ in CLMT and its luminescence characteristics are described. The decay curve of Bi 3+ further proves the existence of an energy transfer from Bi 3+ to Eu 3+ . They have different thermal quenching behaviors, and their fluorescence intensity ratio (FIR) parameter has tremendous temperature sensing performance. Under 329 nm ultraviolet excitation, the emission peaks at 408 nm and 614 nm are used as the reference signal, the largest absolute sensitivity is 0.0127 K −1 at 573 K, and the maximum relative sensitivity is 1.33%K −1 at 483 K. This indicates that CaLaMgTaO 6 : Bi 3+ , Eu 3+ is a material with excellent temperature measurement performance and applicability in non-contact optical thermometers.
研究领域:
材料科学
·
发光材料
·
光学传感
·
无机化学
·
功能材料
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 13
·3941-3949
·
IF 6.1
Guocheng Pan,Yaowu Wang,Jianfeng Wang,Zhenping Wu,Yiheng Yue,Nan Lin,Shiqing Xu,Gongxun Bai
Near-infrared (NIR) phosphor-converted light emitting diodes (pc-LEDs) highly demand broadband NIR phosphors for applications in food safety and smart detection. However, the lack of tunable NIR luminescent materials limits their development. Herein, we constructed a series of NIR Cr3+ doped Ga2O3-based materials with broadband, tunable, efficient emissions by utilizing [Zn2+–Ge4+] and [Ga3+–Ga3+] co-unit substitution. The obtained results show that the emission peak of NIR phosphors can be modulated from 713 to 765 nm. Meanwhile, the excitation peak remains in the blue light region. NIR phosphor-converted devices were prepared with 450 nm LED chips, which were studied using NIR imaging, penetration imaging, anti-counterfeiting, and pupil recognition technologies. Interestingly, NIR mechanoluminescence (ML) was realized based on the developed phosphors, which were successfully applied for non-destructive measurements of solids and in vivo bioimaging. Our study proposes a series of tunable and broadband luminescent materials and devices for NIR applications.
研究领域:
材料科学
·
光学工程
·
生物医学工程
·
传感器技术
·
固体物理
✓ 已验证
DOI
高影响因子
Materials Chemistry Frontiers
·
2019
·Vol. 3
·期 10
·2120-2127
·
IF 0
Qiang Zhang,Xicheng Wang,Zuobin Tang,Yuhua Wang
A novel blue-emitting phosphor, Na3ScSi2O7:Ce3+ (NSSO:Ce3+), was synthesized with a solid-state method at low temperature successfully. Its crystal structure, band structure, and photoluminescence and cathodoluminescence properties were researched in detail. The phase formation and the crystal structure were confirmed by powder X-ray diffraction analysis and the Rietveld refinement method, respectively. Under the excitation of n-UV light, the optimal NSSO:0.02Ce3+ phosphor can yield blue emission centered at 452 nm with a high quantum efficiency of 50.9%. The PL intensity of the NSSO:0.02Ce3+ phosphor remains at 71.46% of the initial value when the temperature is increased from room temperature to 150 °C, indicating good thermal stability. A WLED lamp was obtained by combining a 360 nm n-UV chip with Sr2SiO4:Eu2+, (Ca, Sr)AlSiN3:Eu2+ and NSSO:0.02Ce3+ phosphors, in which the color coordinates, CCT and CRI are (0.360, 0.348), 4409 K and 90.9, respectively. Moreover, under low voltage electron bombardment, the phosphor can emit blue emission with high luminescence intensity, current saturation and resistance. All the results indicate that the NSSO:Ce3+ phosphor shows much potential for the application of both WLEDs and field emission displays (FEDs). Our research has also offered a new insight and perspective that using Sc-based sorosilicates as host can be an appropriate strategy for developing excellent inorganic luminescence materials.
研究领域:
材料科学
·
光学工程
·
无机化学
·
固态照明
·
显示技术
✓ 已验证
DOI
危险品化学品经营许可证（带存储）