Chemical Science
·
2024
·
IF 7.6
Qianrong Jin,Rui Wu,Yuexiao Pan,Yihong Ding,Hongzhou Lian,Jun Lin,Liyi Li
The burgeoning demand for materials with tunable photoluminescence properties for applications has necessitated the exploration of novel luminescent materials. This study presents the synthesis and characterization of a novel 0D organic–inorganic hybrid metal halide (OIHMH) single crystal, C6H14N2CdBr4, which exhibits intriguing luminescent properties upon Mn2+ doping. The introduction of single Mn2+ ions results in a dual-emission, with the unexpected emergence of a red emission peak at 627 nm, in addition to the conventional tetrahedral green emission at 525 nm. This dual-emission is attributed to the distinct inter-tetrahedral distances within the crystal structure of C6H14N2CdBr4 with varying distances between [CdBr4]2− tetrahedra, influencing the spatial distribution and interaction of the [MnBr4]2− tetrahedra. Electron paramagnetic resonance (EPR) spectroscopy and theoretical calculations reveal the 627 nm and 525 nm emissions are attributed to the d–d transition of magnetic coupled Mn2+–Mn2+ pairs and isolated Mn2+ ions, respectively. This study not only advances the understanding of the luminescence mechanisms of Mn2+ but also paves the way for the development of tunable luminescent materials.
研究领域:
材料科学
·
光学
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产品关联
DOI
PubMed
高影响因子
International Journal of Nanomedicine
·
2017
·
IF 4.3
Juqun Xi,Lanyue Da,Changshui Yang,Rui Chen,Lizeng Gao,Lei Fan,Jie Han
Nanoparticle drug delivery carriers, which can implement high performances of multi-functions, are of great interest, especially for improving cancer therapy. Herein, we reported a new approach to construct Mn 2+ -coordinated doxorubicin (DOX)-loaded poly(lactic- co -glycolic acid) (PLGA) nanoparticles as a platform for synergistic chemo-photothermal tumor therapy. DOX-loaded PLGA (DOX/PLGA) nanoparticles were first synthesized through a double emulsion-solvent evaporation method, and then modified with polydopamine (PDA) through self-polymerization of dopamine, leading to the formation of PDA@DOX/PLGA nanoparticles. Mn 2+ ions were then coordinated on the surfaces of PDA@DOX/PLGA to obtain Mn 2+ -PDA@DOX/PLGA nanoparticles. In our system, Mn 2+ -PDA@DOX/PLGA nanoparticles could destroy tumors in a mouse model directly, by thermal energy deposition, and could also simulate the chemotherapy by thermal-responsive delivery of DOX to enhance tumor therapy. Furthermore, the coordination of Mn 2+ could afford the high magnetic resonance (MR) imaging capability with sensitivity to temperature and pH. The results demonstrated that Mn 2+ -PDA@ DOX/PLGA nanoparticles had a great potential as a smart theranostic agent due to their imaging and tumor-growth-inhibition properties.
研究领域:
纳米技术
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癌症治疗
·
生物医学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 8
·1-9
·
IF 5.7
Xia Qing,Zheng Jintao,Bu Jianlan,Li Rui,Li Xinxin,Fan Shuting,Ling Kai,Jiang Hongyan
The development and performance of a DNA probe adsorbing Mn 2+ -modified black phosphorus (BP@Mn 2+ /DNA) hybrid nanosensor is reported that enables rapid detection of cancer-derived exosomal microRNAs (miRNAs) and exosomes. This two-dimensional (2D) nanosensor can spontaneously penetrate the lipid bilayer of exosome membranes owing to its ultra-thin geometry. Subsequently, the adsorbed probe specifically hybridizes with the target miRNA and then dissociates from the nanosensor surface, generating fluorescent signals. Therefore, the BP@Mn 2+ /DNA nanosensor can differentiate between colorectal cancer (CRC) cell-derived exosomes and those derived from intestinal epithelial cells through sensing of exosomal miRNAs. Furthermore, when the epithelial cell adhesion molecule (EpCAM) aptamer is adsorbed onto BP@Mn 2+ instead of the miRNA probe, the nanosensor is able to distinguish exosomes derived from the plasma of CRC patients from those of healthy controls by the recognition ability of the EpCAM aptamer. By utilizing this nanosensor, we were able to effectively differentiate cancer-derived exosomes through the direct detection of miRNA-21 within the exosomes, as well as the identification of specific exosomal membrane proteins. This nanosensor design paves the way for the development of rapid and efficient cancer-derived exosomal miRNA and exosome biosensing nanoplatforms. Graphical abstract
研究领域:
纳米技术
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癌症生物学
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分子诊断
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生物传感器
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细胞外囊泡
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yong Tang,Jianwei Zhao,Yi Li,Yujing Wang,Guangqiu Zhang,Yihang Zhao,Lirong Qin
In this study, we synthesized Co 3 O 4 :Ce 3+ /Mn 2+ granular nanowires on nickel foam as an electrode for supercapacitors using a hydrothermal method. The introduction of Mn 2+ ions into the Co 3 O 4 :Ce 3+ electrode material increased the oxygen vacancy and Co 2+ /Co 3+ ratio of the material, resulting in an increase in electrical conductivity and electrochemical performance. In the three-electrode system, the Co 3 O 4 :Ce 3+ /Mn 2+ electrode achieved a specific capacitance of 2527.8 F/g at 1 A/g, which is 65 % higher than that without Mn 2+ ions. A symmetric supercapacitor (SSC) device was prepared by assembling two electrode components. At a current density of 1 A/g, the SSC device achieved a specific capacitance of 467.0 F/g, delivering a maximum energy density of 233.5 Wh/kg (1 A/g) and a maximum power density of 36,600 W/kg (20 A/g), coupled with outstanding cycling stability. These results indicate that the Co 3 O 4 :Ce 3+ /Mn 2+ nanowires coated nickel foam electrode holds considerable promise for applications in energy storage.
研究领域:
材料科学
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电化学
·
能源存储
·
纳米材料
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功能材料
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电化学储能
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Kai Liu,Rongxia Huang,Dijia Lin,Junhui Tan,Yejing Dai,Hua-Tay Lin
BiFeO 3 -BaTiO 3 ceramics exhibit excellent thermal stability and outstanding electrical properties in the morphotropic phase boundary (MPB) region, making them a prominent focus of research of lead-free piezoelectric ceramics. However, the conventional sintering process often results in Bi volatilization and changes in the valence state of Fe ions, leading to high leakage current and difficulty in achieving a piezoelectric coefficient above 200 pC/N. In this study, we fabricated 0.7BiFeO 3 -0.3BaTiO 3 -0.1 mol% MnCO 3 - x wt% Sc 2 O 3 (BFM-BT- x Sc) piezoelectric ceramics using a direct reaction sintering method. We investigated the microstructure, electrical properties, and thermal stability of the BFM-BT- x Sc ceramics. Compared to single Mn 2+ doping, the addition of Sc 3+ significantly refined the grain size, suppressed the transition of Fe 3+ to Fe 2+ , and reduced the concentration of oxygen vacancies, resulting in enhanced electrical properties of BFM-BT ceramics. The BFM-BT-0.2Sc ceramics exhibited excellent piezoelectric performance ( d 33 = 208 pC/N, d 33 = 400 pC/N at 308 °C) and a high Curie temperature ( T c = 502 °C), with a resistivity of 1.69 × 10 8 Ω cm at 200 °C. After optimizing the sintering temperature, the piezoelectric performance further improved, with d 33 reaching 228 pC/N, d 33 = 427 pC/N at 282 °C, and a resistivity of 5.9 × 10 8 Ω cm at 200 °C. These findings indicate that BFM-BT-0.2Sc ceramics possess excellent high-temperature electrical properties, suggesting broad prospects for the co-doping of Mn 2+ and Sc 3+ in BF-BT-based piezoelectric ceramics for high-temperature applications.
研究领域:
材料科学
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无机非金属材料
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电子材料
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DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 28
·19039-19045
·
IF 3.9
Jie Zhang,Kai-Qi Sun,Zhong-Hui Zhang,Ri-Cheng Wang,Zi-Han Lin,Xiao-Wu Lei,Yu-Yin Wang,Ping Ju,Yuan-Chun He
Organic–inorganic hybrid low-dimensional lead halides have garnered significant interest in the realm of solid-state optical materials due to their unique properties and potential applications. In this study, we report the synthesis, characterization and application of Mn2+-doped one-dimensional (1D) [AEP]PbCl5·H2O hybrid lead halide perovskites with tunable photoluminescence properties. The Mn2+ doping leads to a redshift of the dominant emission wavelength from 463 nm to 630 nm, with the optimal doping concentration resulting in an enhanced photoluminescence quantum yield (PLQY) from less than 1% to 8.96%. The structural and optical stability of these doped perovskites have been thoroughly investigated revealing excellent performance under humid and high-temperature conditions. Perovskite–PVP composite films exhibit high crystallization and bright orange-red emission under UV excitation. Furthermore, we demonstrate the successful fabrication of a white LED device using the Mn2+-doped perovskite in combination with commercial green and blue phosphors. The fabricated LED exhibits a high color rendering index (CRI) of 87.2 and stable electroluminescence performance under various operating currents and extended operation times. Our findings highlight the potential of Mn2+-doped 1D hybrid lead halide perovskites as efficient and stable phosphors for high-performance white light emitting diodes and other optoelectronic 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
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 86
·70238-70243
·
IF 3.84
Yu Chen,Jinhui Wang,Jing Li,Xinxin Li,Shuo Wei
The II–VI group/monoamine hybrid was a novel inorganic/organic (I/O) layered structure and it exhibited a strong quantum confinement effect and well-defined Mn2+-doped luminescence, which was imperative and valuable academically for its application. In this work, the pure and well-crystalline (ZnS:Mn)2·oa (oa = octylamine) hybrid was prepared by solvothermal synthesis and its thin films were fabricated by the drop-casting method. The 5 at% Mn2+-doped hybrid exhibited a strong Mn2+ luminescence at 597 nm with a 300 nm excitation. The inner filter effect (IFE) for this luminescence was investigated and verified by detecting three selected environmental contaminant species: n-butyl xanthate (BX), crystal violet (CV), and reaction black 5 (RB5), which indicated that this hybrid thin film had a good luminescence IFE-based linear response for the μM species solution. Furthermore, the 597 nm luminescence remained intact for the solution with a pH from 4 to 10 and the hydrophobicity of the hybrid thin film was favorable for its rapid and multiple IFE-based detection. Therefore, this hybrid thin film is a competitive candidate for the new-generational fluorescence sensors to probe the occurrence of these environmental contaminants.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Chenbo Xu,Jianing Zhang,Yuexiao Pan,Yangyang Liu,Xiaoyun Yang,Hongping Xiao,Jun Zou
The quest for advanced luminescent materials with high quantum yields and excellent stability is essential for the development of light-emitting diodes (LEDs). In this context, we present a novel zero-dimensional (0D) organic-inorganic hybrid metal halides (OIHMHs), (4-BTP) 2 ZnBr 4 :Mn 2+ , which exhibits dual emission characteristics. The material achieves a photoluminescence quantum yield (PLQY) of 87.6 % under 365 nm excitation, indicating its high radiative efficiency. Furthermore, it demonstrates remarkable water resistance, maintaining its photoluminescence (PL) performance after two months of immersion in water, and excellent thermal stability up to 325 °C. Importantly, the successful incorporation of Mn 2+ ions into the (4-BTP) 2 ZnBr 4 matrix allows for tunable emission from blue-violet to green, depending on the excitation wavelength and Mn 2+ concentration. A stable white light emission in LED with a color rendering index (CRI) of 88 and correlated color temperature (CCT) of 6757 K has been obtained with the phosphor (4-BTP) 2 ZnBr 4 :Mn 2+ . This work contributes to the fundamental understanding of energy transfer mechanisms in hybrid materials.
研究领域:
材料科学
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光学材料
·
固态照明
·
无机化学
·
杂化材料
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Qin Yu,Cheng Liu,Junxiao Liu,Da Huang,Tianlong Wen,Dainan Zhang,Huaiwu Zhang
In this study, NaMg 1- x Mn x (PO 3 ) 3 (0.00 ≤ x ≤ 0.0625) ceramics with low dielectric constant were prepared via the solid-state reaction method. The effects of Mn 2+ substitution on the microstructure and dielectric properties (at microwave and terahertz frequencies) of the NaMg(PO 3 ) 3 ceramics were studied by means of the Rietveld refinement, morphology, and ionic polarizability analysis. It is obtained that the NaMg 0.0975 Mn 0.025 (PO 3 ) 3 ceramic sintered at 880 °C for 4 h exhibited optimal dielectric properties at microwave frequencies, where ε r = 4.585, Q × f = 48,313 GHz (@17.228 GHz), and τ f = −40.83 ppm/°C. The Q × f and τ f values were changed by 74.2 % and 27.8 %, as compared to the values of 27,728 GHz and −56.52 ppm/°C for the pure NaMg(PO 3 ) 3 ceramic, respectively. For terahertz frequencies (0.2–1.0 THz), the ε r values were decreased to 3.79–3.98, and the tan δ values were between 0.0203 and 0.1152. All the experimental results indicate that this system exhibits great potentials both at microwave and terahertz frequencies.
研究领域:
材料科学
·
电气工程
·
陶瓷
·
介电材料
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2015
·
IF 6.409
Jianguo Zhang,Shaozhen Wang,Ni Gao,Dexiang Feng,Lun Wang,Hongqi Chen
A new turn-on luminescence energy transfer (LET) system has been designed for the detection of prostate specific antigen (PSA, a cancer marker) that utilizes Mn 2+ -enhanced long wavelength luminescence NaYF 4 : Yb, Er upconversion nanorods as the donor and gold nanorods as the acceptor. The Mn 2+ -doped NaYF 4 :Yb,Er upconversion luminescence nanorods with an emission peak located in the red region were synthesized. The presence of Mn 2+ markedly increased the luminescence intensity over that of the NaYF 4 :Yb, Er upconversion nanomaterials (excited by a 980 nm continuous wavelength laser). The surfaces of Mn 2+ -doped NaYF 4 :Yb, Er upconversion nanorods were modified with poly(acrylic acid). Antibodies against prostate specific antigen were bound to the surface of the carboxyl-functionalized upconversion nanorods, which acted as the energy donor in this LET system. Gold nanorods with an absorption band at ~666 nm were synthesized by the seed growth method, acted as the energy acceptor. The emission band of the upconversion nanorods overlapped well with the absorption band of the gold nanorods. The luminescence was quenched because of the electrostatic interactions that shortened the distance between the donor (negatively charged) and the accepter (positively charged).When the PSA antigen was added into the system, the energy acceptor and the energy donors were separated because the binding affinity between PSA and anti-PSA was greater than the electrostatic interactions, and thereby the luminescence was recovered. The linear range of detecting PSA was from 0.1172 to 18.75 ng/mL ( R =0.995), with a limit of detection for PSA as low as 0.1129 ng/mL. The method was successfully applied to the sensing of PSA in human serum samples.
研究领域:
生物技术
·
纳米技术
·
分析化学
·
癌症研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2020
·
IF 16.602
Jian Qin,Hirbod Maleki Kheimeh Sari,Xiujuan Wang,Huijuan Yang,Jiujun Zhang,Xifei Li
Due to the different energy storage mechanisms, anode electrodes have been challenging to match cathode ones in sodium-ion hybrid supercapacitors (Na–HSCs), resulting in low energy and power densities of the device. As a result, engineering anode materials with excellent electrochemical performance has aroused a great deal of interest. In this work, metal oxides (Mn 2+ /Nb 5+ ) embedded into interconnected hollow carbon nanoboxes (MnO@HCNb and NaNbO 3 @HCNb) are fabricated by a simple template-assisted CVD method. Such a unique structure provides shortened solid-state transportation pathway and sufficient adsorption sites for Na + , with differing energy storage mechanisms from traditional Faradic reaction. Benefiting from it, the MnO@HCNb electrode exhibits an outstanding rate performance and an ultra-long lifespan of more than 10,000 cycles with 88.6% of capacity retention, which is rarely reported for oxide-based anodes. Moreover, energy storage mechanism of the composite and the important role of Mn/Na 2 O interface generated inside the core (MnO) - shell (C) structure during conversion reaction have been revealed. Hybrid ion storage mechanisms (adsorption, Faradic reaction and intercalation) are proposed with desirable compatibility, exhibiting uniform capacitive electrochemical behavior. Coupling with activated carbon cathode, a full cell of Na-HSC demonstrates a high energy density of 116 Wh kg −1 at 99 W kg −1 and 56.4 Wh kg −1 at 1.8 kW kg −1 . Indeed, this work is inspiring to other researchers to further improve the electrochemical performance of anode materials by adjusting their energy storage mechanisms through structural reconstruction.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2014
·Vol. 14
·期 6
·4139-4146
·
IF 1.339
He Enjie,Zheng Hairong,Gao Wei,Tu Yinxun,Lu Ying,Tian Huani,Li Guian
NaYF4:Yb3+, Er3+, Mn2+ nanocrystals with cubic crystal phase were obtained by a facile solvothermal method through doping a proper amount of Mn2+ ions to the nanocrystals. The results of XRD and TEM showed that the as-prepared samples
were well crystallized and their average size was about 25 nm. Under excitations at 978.5 nm and at 532 nm, obvious enhancement and regulation of upconversion and downconversion fluorescence were obtained. Upconversion emission spectra indicate that these effects were independent of doped
concentrations of Er3+ and Yb3+, excitation power, and the excitation wavelength in the current study. It is concluded that the enhancement of fluorescence emissions is mainly due to the change of local symmetry around Er3+ ions, while the regulation of red-to-green
ratios was caused by efficient energy transfer between Er3+ and Mn2+ ions. This kind of upconversion material has a great potential in bioimaging and drug delivery since the excitation and emission falls into the region of “optical window” of biological tissues.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
光学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）