APPLIED SURFACE SCIENCE
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2019
·
IF 5.155
Anish Bhattacharya,Xiangfeng Chu,Qi Gao,Xue Li,Yongping Dong,Shiming Liang,Amit K. Chakraborty
Ethanol sensing is an important area of research given its relevance to human health, traffic control and various industries. Metal oxide semiconductor nanostructures are most commonly used as gas sensors. In this study, enhanced ethanol sensing properties were obtained by incorporation of Gd 3+ ions into Barium Stannate (GBSO), a bimetallic oxide microrods prepared through a simple co-precipitation method. The GBSO films, when exposed to ethanol, showed that incorporation of Gd improved the sensing response till 3 wt% of Gd (3GBSO) loading while further increase in Gd content resulted in reduced response. 3GBSO sample showed response as high as 76 to 500 ppm of ethanol vapor at an operating temperature of 220 °C along with a very low detection limit of 0.1 ppm (response of 1.5). Good repeatability and moderate stability were also observed suggesting its potential as low-cost ethanol sensor. Significant increase in both specific surface area as well as oxygen content (as measured by x-ray photoelectron spectroscopy) was observed in 3GBSO sample compared to that of BSO. Thus, we showed that incorporation of Gd improved the surface area of BSO microrods and in turn the surface adsorption of oxygen which led to their enhanced response to ethanol.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·
IF 3.7
Zixuan Zhou,Yuhan Jiang,Xin Luo,Ying Zhang,Lei Wang,Yaguang Sun,Jingwei Liu,Mingchang Zhu,Jinchao Cao,Shuangyan Wu
Milk, owing to its nutritional value, is a staple commodity in daily life. Ensuring its integrity and authenticity is paramount for researchers and the food industry. To evaluate spoilage and adulteration of milk, we proposed a robust and reliable optical method to guarantee milk quality by utilizing riboflavin as an internal biomarker. By precisely controlling the content of Eu 3+ , Tb 3+ , and Gd 3+ ions, a two-dimensional ratiometric luminescence lanthanide coordination polymer (Ln-CP) with adjustable emission centers was synthesized for the detection of riboflavin (RF), leveraging a Förster resonance energy transfer (FRET) and photoinduced electron transfer (PET) process. This method demonstrates high sensitivity and selectivity towards RF and has been successfully applied to the detection of RF in both milk and calf serum.
研究领域:
分析化学
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食品科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
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IF 10.652
Mingmao Chen,Ruyue Li,Yan Liu,Xiaorong Song,Jia Tian,Yulei Fu,Yingjie Yang,Chun Liu,Qiqing Zhang
As the effective photothermal agent, NIR cyanine dye has shown great promise in cancer therapy due to its distinct NIR absorbance and excellent thermal conversion superiority. Up to date, various nanosystems have been developed as the delivery carrier for NIR dye in order to overcome the inherent issues such as poor stability, low bioavailability and insufficient therapy efficacy. However, the huge obstacle of current nanocarriers for NIR dye encapsulation frequently lies in high leakage risk, complicated preparation and poor biocompatibility, which significantly hinder their further application in cancer therapy. To make up for these deficiencies, we developed a facile and universal strategy to fabricate a novel nanoscale coordination polymers (NCPs) through the co-coordination driven assembly of cypate and carboxyl ligand with Gd 3+ . Through this design, cypate can be effectively introduced into the interior of NCPs through the coordination between its carboxyl group and Gd 3+ , resulting in the enhanced stability, reduced leakage risk, and improved therapeutic efficacy. The fabricated NCPs have exhibited multimodal imaging guided tumor targeting chemo-photothermal property. After accumulation in tumor site, rapid drug release can be effectively triggered by NIR laser induced hyperthermia and acidic endo/lysosomal microenvironment, which fundamentally improved the synergistic chemo-photothermal efficacy for tumor killing. The newly fabricated NCP system can exert distinctively chemo-photothermal synergistic efficacy for cancer therapy and will pave a new avenue for the application of NCPs in biomedical field.
研究领域:
生物医学工程
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癌症治疗
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纳米技术
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药学
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产品关联
DOI
高影响因子
Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-14
·
IF 12.264
Fang Hanyi,Li Mengting,Liu Qingyao,Gai Yongkang,Yuan Lujie,Wang Sheng,Zhang Xiao,Ye Min,Zhang Yongxue,Gao Mingyuan,Hou Yi,Lan Xiaoli
A biomimetic nanoprobe was built with cancer cell membrane-coated and Gd 3+ -doped upconversion nanoparticles.
The nanoprobe could be applied to in vivo UCL/MRI/PET multimodality precise imaging and successfully differentiated MDA-MB-231 tumor models through in vivo tri-modality imaging, which may be used for breast cancer molecular classification.
研究领域:
纳米技术
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生物医学工程
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癌症研究
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医学成像
✓ 已验证
DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Jin-Ke Wu,Wei-Wei Zhang,Jian-Jun Wang,Jiang-Tao Zhu,Yu-Hang Zhang,Yi-Xuan Li,Ya-Jun Luo,Ya-Fei Zhang,Li-Xing Dai,Chuan-Xiang Qin,Jun Sun,Jia-Jia Chen
In this work, Gd 3+ ionic nano-aggregate clusters were introduced into metallo-polyelectrolytes to balance the conflicts between high mechanical robustness and X-ray attenuation of flexible shielding materials. The segmented polyurethanes (PUs) containing main-chain bisferrocene and pendant sulfonates in hard segments is applied as a macromolecular template for the subsequent self-assembly with Gd 3+ . Rare earths aggregate into dynamic clusters about 2.2 nm, which is beneficial to improve the radiation attenuation ability and mechanical properties of materials. The hierarchical noncovalent interactions (ionic interactions, coordination interactions, hydrogen bonds , and ferrocene-metal interactions, etc.) in the aggregate PUs enable the co-existence of high mechanical strength , large stretchability, and fast radiation dissipation. As a result, this Gd 3+ hybrid bisferrocene-based PU demonstrates extremely high tensile properties (breaking stress = 27.8 ± 0.2 MPa, breaking strain = 576 ± 7%) as well as super atomic shielding efficiency (14.39 cm 2 g −1 ) at 65 keV.
研究领域:
材料科学
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辐射防护
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聚合物化学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Bio
·
2024
·
IF 8.7
Mengyang Zhou,Yifei Wang,Yaning Xia,Yinhua Li,Jianfeng Bao,Yong Zhang,Jingliang Cheng,Yupeng Shi
Nanotechnology for tumor diagnosis and optical therapy has attracted widespread interest due to its low toxicity and convenience but is severely limited due to uncontrollable tumor targeting. In this work, homologous cancer cell membrane-camouflaged multifunctional hybrid metal coordination nanoparticles (DRu/Gd@CM) were prepared for MRI-guided photodynamic therapy (PDT) and photothermal therapy (PTT) of tumors. Bimetallic coordination nanoparticles are composed of three functional modules: dopamine, Ru(dcbpy) 3 Cl 2 and GdCl 3 , which are connected through 1,4-Bis[(1H-imidazole-1-yl)methyl]benzene (BIX). Their morphology can be easily controlled by adjusting the ratio of precursors. Optimistically, the intrinsic properties of the precursors, including the photothermal properties of polydopamine (PDA), the magnetic resonance (MR) response of Gd 3+ , and the singlet oxygen generation of Ru(dcbpy) 3 Cl 2 , are well preserved in the hybrid metal nanoparticles. Furthermore, the targeting of homologous cancer cell membranes enables these coordinated nanoparticles to precisely target tumor cells. The MR imaging capabilities and the combination of PDT and PTT were demonstrated in in vitro experiments. In addition, in vivo experiments indicated that the nanoplatform showed excellent tumor accumulation and therapeutic effects on mice with subcutaneous tumors, and could effectively eliminate tumors within 14 days. Therefore, it expanded the new horizon for the preparation of modular nanoplatform and imaging-guided optical therapy of tumors.
研究领域:
纳米技术
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生物医学工程
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癌症治疗
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分子成像
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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