JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Zhisheng Li,Chaoqi Hao,Chuantong Cheng,Zhaowei Zhu,Mengjie Zhang,Yuehua Li,Liting Huang,Bao Zhang,Xu Zhang
s HgTe quantum dots (QDs) are promising for infrared optoelectronic applications due to their size-tunable bandgap and solution-processable nature. However, conventional synthesis methods often result in aggregation and instability, limiting their practical use. This study presents a strategy to improve the dispersibility of HgTe QDs by using mercuric iodide (HgI₂) as the mercury precursor and 3-mercaptopropionic acid (MPA) in combination with oleic acid as the ligands during the quenching stage. Comparative experiments showed that MPA-treated QDs exhibited improved dispersion, with a reduced hydrodynamic diameter (~135 nm) compared to those without MPA (~180 nm). Additionally, photoconductive devices fabricated with MPA-treated QDs demonstrated significantly better performance. These devices exhibited higher switching ratios and responsivity, reflecting the improved dispersion and surface stabilization of the QDs, which enhanced charge transport efficiency and reduced recombination losses. This work provides an effective approach for controlling dispersion and enhancing the performance of HgTe QDs for infrared optoelectronics.
研究领域:
材料科学
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纳米科技
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半导体物理
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光电功能材料
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胶体化学
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产品关联
DOI
高影响因子
Separations
·
2021
·Vol. 8
·期 6
·72
·
IF 2.777
Xiqiang Liu,Hui Zhang,Yunlong Liu
Apatite is an important carrier of rare earth elements (REEs) and phosphorite is a potential REEs resource. However, the influence of hydrothermal fluids on the migration and enrichment of REE in apatite remains controversial. The experimental study of the interaction between REE-bearing fluid and apatite is one of the essential ways to understand the chemical behavior of rare earth elements in apatite. In this study, we conducted the fluid–mineral reaction experimental study (at 400 °C, 50 MPa and 4–16 wt %) between high lanthanum (La) content hydrothermal solution and low REE content to reveal the influence of different salinities on the diffusion of rare earth elements in fluorapatite. Based on in situ geochemical analyses of experimental products, we show that the diffusion coefficients of La in fluorapatite are between 3.24 × 10−15and 5.88 × 10−15m2/s. The salinity of the fluid has a great influence on the diffusion coefficient, with the increase of salinity, the diffusion coefficient increase.Keywords:water–mineral reaction;fluorapatite;lanthanum;diffusion
研究领域:
地质学
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地球化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Boru Jin,Rongjie Zhuang,Zhonglong Zhang,Boning Sun,Wenchao Gao,Caofeng Pan
Flexible pressure sensors are often evaluated over only a limited portion of their nominal operating range, making it difficult to simultaneously achieve high-sensitivity, ultrawide- range detection, and reliable signal resolution under large preloads within a single device. Here, we present a geometry-guided strategy for stable pressure sensing from Pa to MPa based on a biomimetic daisy-inspired gradient hemispherical array. By integrating finite-element-analysis-guided optimization with an interpretable simulation-trained surrogate model, the multilevel gradient microstructure is rationally engineered to regulate compressibility and contact-area evolution, thereby mitigating capacitive saturation and extending the accessible pressure range. The resulting iontronic sensor delivers a consistently high sensitivity exceeding 122 kPa −1 over 0–2555 kPa, together with an ultrahigh sensitivity of 1864 kPa −1 in the low-pressure regime (0–61 kPa) and a low detection limit of 7.6 Pa. The device further shows fast response/recovery times below 5 ms, stable operation under repeated loading, and reliable pressure resolution even under MPa-level preloads. Beyond device performance, the surrogate-model interpretation reveals the key multilevel design rules governing the sensing response, establishing a generalizable framework that links bioinspired geometry, interfacial mechanics, and pressure-sensing behavior. This integrated structure-mechanism-modeling strategy provides a practical route toward next-generation ultrawide-range flexible sensors for wearable electronics and human-machine interfaces.
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2021
·
IF 2.694
Fei Yu,Liu-Ying Yu,Ke-Jun Wu,Chao-Hong He
In this work, the thermal conductivities of toluene, cyclohexane, and diethyl ether were measured from 291 to 351 K at pressures up to 15.1 MPa. The binary systems of toluene–cyclohexane, toluene–diethyl ether, and cyclohexane–diethyl ether were also measured from 291 to 351 K at pressures 0.1 and 10.1 MPa. The relative expanded uncertainty of the obtained data was estimated to be ±2% with a confidence level of 0.95 (k = 2). The linear thermal conductivity model was used to correlate the pure components as a function of temperature and pressure. The thermal conductivities of binary systems were fitted as a function of temperature and composition. For pure components, the maximum values of absolute percentage deviation (AAD) and maximum absolute percentage deviation (MAD) are 0.45 and 0.87%, respectively. For binary systems, the maximum values of AAD and MAD are 0.56 and 1.79%, respectively.
研究领域:
热力学
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化学工程
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物理化学
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产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2026
·
IF 15
Yang Hang,Jinghan Yang,Xiaoquan Wei,Xiaojing Li,Min Xu,Yuxuan Chen,Weiwei Chen,Genhong Yao,Xiaojun Tang,Xiaojuan Han,Min Nie,Lingyun Sun
Lupus nephritis (LN) is a common renal complication of systemic lupus erythematosus, and its severity is closely correlated with disease prognosis. Conventional therapy for LN faces challenges including multiple side-effects caused by systemic administration and low drug delivery efficiency due to lack of organ targeting. Herein, we designed a renal-targeted delivery platform based on C-C Motif Chemokine Receptor 2 (CCR2)-C-C Motif Chemokine ligand 2 chemotaxis, constructed by engineering CCR2-overexpressing mesenchymal stromal cell-derived EVs loaded with mycophenolic acid (MPA)-encapsulated MSNs (MPA@CMSNs). In LN models, MPA@CMSNs enabled efficient delivery of MPA into renal region and significantly alleviated kidney inflammation. Mechanistically, MPA@CMSNs effectively inhibited the proliferation and differentiation of proinflammatory immune cells, while concurrently suppressing the Dectin3/NF-κB signaling pathway in macrophages to remodel and optimize the renal immune microenvironment. Collectively, our findings present an efficient renal-targeted strategy with profound therapeutic efficacy against LN, offering a promising approach for targeted disease treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2015
·
IF 6.723
Chuanzhen Zhao,Zelong Bai,Xiangyou Liu,Yijia Zhang,Bingsuo Zou,Haizheng Zhong
An efficient ligand exchange strategy for aqueous phase transfer of hydrophobic CuInS2/ZnS quantum dots was developed by employing glutathione (GSH) and mercaptopropionic acid (MPA) as the ligands. The whole process takes less than 20 min and can be scaled up to gram amount. The material characterizations show that the final aqueous soluble samples are solely capped with GSH on the surface. Importantly, these GSH-capped CuInS2/ZnS quantum dots have small size (hydrodynamic diameter <10 nm), moderate fluorescent properties (up to 34%) as well as high stability in aqueous solutions (stable for more than three months in 4 °C without any significant fluorescence quenching). Moreover, this ligand exchange strategy is also versatile for the aqueous phase transfer of other hydrophobic quantum dots, for instance, CuInSe2 and CdSe/ZnS quantum dots. We further demonstrated that GSH-capped quantum dots could be suitable fluorescence markers to penetrate cell membrane and image the cells. In addition, the GSH-capped CuInS2 quantum dots also have potential use in other fields such as photocatalysis and quantum dots sensitized solar cells.
研究领域:
材料科学
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生物学
·
医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2019
·Vol. 411
·期 21
·5437-5444
·
IF 3.286
Jiao Xiangyu,Zhou Yabin,Zhao Dan,Pang Duo,Wang Changtao,Du Hongwu,Wen Yongqiang,Zhang Xueji
To meet the need for high-throughput immunoassays, many multiplex fluorescent immunoassays have been proposed. Most of them need different kinds of fluorescent label indicators during the test. In this work, a novel indirect ELISA-inspired dual-channel fluorescent immunoassay based on 3-mercaptopropionic acid capped CdTe/ZnS quantum dots (QDs) was constructed. The ELISA wells were coated with two kinds of antigen–QD complex. When the primary antibodies were present in a sample, they mediated the binding of a secondary antibody–DNA–gold nanoparticle complex to the antigen–QD complex. Then the gold nanoparticles quenched the fluorescence of the QDs and a decrease in fluorescence intensity was observed. Thus, the amount of primary antibody could be estimated from the decrease of fluorescence intensity. Owing to the wide absorption range and the relatively narrow emission band of the QDs, the dual-channel fluorescent immunoassay system could work at the same excitation wavelength and the emission wavelengths of each channel had no interference. As a result, two different kinds of primary antibody could be detected at the same time in one ELISA well, which simplified the operation and greatly improved the efficiency. Besides, only one type of secondary antibody needs to be added to the prepared microtiter plates, which further simplified the operation during the detection procedure. This dual-channel fluorescent immunoassay system will provide new insights into high-throughput immunodetection.
Graphical abstract
研究领域:
生物化学
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分析化学
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纳米技术
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免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2015
·
IF 2.679
Xiangyang Liu,Chao Su,Xuetao Qi,Maogang He
In this work, new experimental values for the isobaric molar heat capacities of ethyl heptanoate and ethyl cinnamate are presented at temperatures ranging from (305 to 387) K and under pressures up to 16.3 MPa. The relative expanded uncertainty of the isobaric molar heat capacity is estimated to be less than 1%. The isobaric molar heat capacities of ethyl heptanoate and ethyl cinnamate rise with the increasing temperature and fall with the increasing pressure. Based on the experimental findings in our work and from the literature, the isobaric molar heat capacities of saturated fatty acid methyl esters and fatty acid ethyl esters are found to rise with the carbon number, while the isobaric molar heat capacity of aromatic ester ethyl cinnamate is lower than that of the saturated fatty acid ethyl ester with the same or less carbon number due to the unsaturation. A correlation is proposed for the isobaric molar heat capacities of ethyl heptanoate and ethyl cinnamate with a maximum absolute relative deviation of 0.5%.
研究领域:
物理化学
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Zining Zhang,Huakang Yang,Xiya Chen,Chenxi Ye,Yudong Guo,Qiyi Gan,Jun Liu,Dongxiang Luo,Xiao Liu
The increasingly growing global demand for sustainable energy solutions has heightened emphasis on photocatalytic hydrogen production as a crucial technological advancement. This study represents a significant advancement in this field by creating gradient-alloyed quantum dots (QDs) composed of CdS@Zn x Cd 1-x S@ZnS structures, which demonstrates exceptional photocatalytic activity for hydrogen evolution. By using an innovative dual-ligand engineering approach that incorporates both mercaptopropionic acid (MPA) and thiocyanate (SCN) ligands, we have achieved a substantial enhancement in photocatalytic activity, demonstrating a 3.83-fold increase compared to MPA-QDs and an extraordinary 97.43-fold increase relative to SCN-QDs. This enhancement is attributed to the synergistic interactions between inorganic and organic ligands, which optimizes the dynamics of electron and hole transfer. The HOMO energy level from MPA, coupled with the strong electrostatic interactions of the inorganic ligands, markedly improves the redox properties of the QDs, leading to an impressive hydrogen evolution rate of approximately 1422.7 μmol/g h. Our findings elucidate the critical role of surface ligands in modulating redox reactions and demonstrate the potential of dual-ligand systems to substantially surpass the performance of single-ligand systems. This research provides a novel strategy for optimizing the photocatalytic performance of QDs, representing a significant advancement in the pursuit of efficient and sustainable hydrogen production methods, with broader implications for the fields of photocatalysis and optoelectronics.
研究领域:
光催化
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纳米技术
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材料科学
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制氢
·
光电子学
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2018
·
IF 2.196
Chao Su,Chenyang Zhu,Feng Yang,Zheng Ye,Xiangyang Liu,Maogang He
The isobaric molar heat capacities of ethyl octanoate and ethyl decanoate were determined at T = 294–354 K and p = 0.1–24 MPa. The measurements were conducted by a flow calorimeter. The measured results were in good agreements with several available experimental data at atmosphere pressure and the calculated results at high pressure in literatures. Furthermore, a fitting equation was presented to calculate the Cp of ethyl octanoate and ethyl decanoate. The maximum absolute relative deviations between experimental results and calculated data are lower than 0.4%.
研究领域:
物理化学
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2022
·
IF 6.556
Xin Gao,Haoran Xu,Zhuoyi Ye,Xin Chen,Xin Wang,Qi Chang,Yueqing Gu
The 5-year survival rate for pancreatic adenocarcinoma (PA) is less than 10%, making it one of the most lethal forms of cancer. Early-stage diagnosis and resection of the incipient lesions could increase the 4-year survival rate of PA up to 78%. Platelet-derived growth factor receptor β (PDGFRβ), an oncogenic key regulator for migration, proliferation and angiogenesis of cancer cells, has been proved to be aberrantly expressed in the majority of PA. Herein, by amino acid substitution strategy and surface plasmon resonance (SPR) analysis, we designed a novel PDGFRβ-targeting peptide (YQGX-10) with high affinity ( K d = 227.7 nM) and coupled it with a near-infrared fluorescent (NIRF) dye MPA for precisely detection of PA. Great binding affinity and specificity were displayed in a series of in vitro assays. NIRF imaging experiments demonstrated that the synthesized probe could be highly accumulated in xenograft and orthotopic BxPC-3 tumors and provide favorable tumor contrast in the mice, offering a potential novel approach for the early diagnosis of PA. Moreover, YQGX-10 could visualize tumor boundaries and minor lesions in BxPC-3 xenograft mice, shedding a new light on NIRF-guided tumor resection of PA. In addition, we successfully constructed the radioactive probe 99m Tc-HYNIC-YQGX-10 for the diagnosis of PA with high specificity and sensitivity. In summary, the probe warrants further exploration for clinical translation in the early diagnosis and NIRF-guided surgery of PA.
研究领域:
肿瘤学
·
分子影像学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2018
·
IF 2.196
Zhizhen Qin,Siyuan Gong,Xiangwen Zhang,Qincheng Bi,Zhaohui Liu,Guozhu Liu
Density is one of the most important thermophysical properties of aviation fuel for the advanced fuel-cooled thermal management. The density of a hydrocarbon fuel JP-10 was measured using a gamma-ray radial method calibrated with deionized water, cyclohexane, and a mixture of n-heptane and n-octane. The average absolute deviation (AAD) of deionized water is 0.22% under 3.0 MPa and 0.43% under 5.0 MPa, that of cyclohexane is 0.80% under 5.0 MPa, and that of the mixture of n-heptane and n-octane is 0.33% under 5.1 MPa. The experimental density of JP-10 was reported at 267 to 873 K under the pressure of 0.70 to 6.00 MPa. Two empirical correlations were used to fit the liquid and gas density data separately. The results are that the AAD for all the liquid data is 0.46%, and that for all the gas data is 6.12%. Finally, the isobaric thermal expansion was calculated.
研究领域:
热力学
·
能源工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）