Article
Chemistry, Physical
A. Dutta, B. Pihuleac, Y. Chen, C. Zong, L. Dal Negro, C. Yang
Summary: The use of CSS plasmonic nanoparticles has shown significant enhancement in the photocatalytic performance of PEC photoanodes using hematite as a testing system. The optimized CSS NPs have demonstrated double resonance peaks and spatially uniform electric field distributions, resulting in improved photocurrent density and potential for increasing carrier generation in hematite photoelectrocatalytic systems.
MATERIALS TODAY ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Haishan Wu, Yipeng Chen, Weiwei Zhang, Malik Saddam Khan, Yuwu Chi
Summary: The use of polyvinyl pyrrolidone (PVP) as the ligand and surfactant, along with trimethoxysilane (TMOS) as the silicon source, significantly improved the coating efficiency and stability of the CsPbBr3 PQD nanocrystals with a SiO2 shell. The resulting PVP-PQD@SiO2 core-shell nanoparticles exhibited high fluorescence quantum yield and excellent stability, allowing for successful application in cell imaging.
ACS APPLIED NANO MATERIALS
(2021)
Article
Instruments & Instrumentation
Shelby Thompson, Mychele Jorns, Dimitri Pappas
Summary: Dye-doped nanoparticles have shown promise as bright, fluorescent probes for super-resolution microscopy. Gold-silver core-shell nanoparticles with enhanced blinking behavior can be used for STORM super-resolution analysis, resulting in a two-fold improvement in resolution. These nanoparticles are suitable for localization-based super-resolution microscopy.
APPLIED SPECTROSCOPY
(2022)
Article
Nanoscience & Nanotechnology
Mathilde Le Jeune, Emilie Secret, Michael Trichet, Aude Michel, Delphine Ravault, Francoise Illien, Jean-Michel Siaugue, Sandrine Sagan, Fabienne Burlina, Christine Menager
Summary: The endosomal entrapment of functional nanoparticles is a severe limitation to their use for biomedical applications. In this study, a conjugation strategy using cationic peptides was developed to improve the access of magnetic nanoparticles (MNPs) to the cytosol. It was found that peptides rich in histidine residues can promote endosomal escape and enhance the delivery of MNPs to the cytosol.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Cynthia Cibaka-Ndaya, Nicolas Javahiraly, Lucian Roiban, Thierry Epicier, Nacer Boubiche, Sabastien Valette, Antoine Saury, Arnaud Brioude
Summary: A multistep synthesis method was used to prepare nanoscale core@shell spherical heterostructures for H2 optical detection. These nanoheterostructures consist of gold cores, silica shells, and a thin layer of spherical palladium nanoparticles. The samples were characterized by transmission electron microscopy, and the three-dimensional core@shell configuration was confirmed by electron tomography. The optical properties of the nanostructures were analyzed, and their potential for H2 detection was evaluated.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Applied
Shijun Lin, Shuwen Liu, Guofei Dai, Xiaojin Zhang, Fan Xia, Yu Dai
Summary: This study presents a click-induced fluorescence-quenching sensor based on gold nanoparticles for rapid detection of copper ions and ascorbic acid. The sensor has a fast response time and high sensitivity, able to detect the concentrations of Cu2+ and AA within less than 3 minutes.
Article
Chemistry, Physical
Patrick Y. Yee, Sarah Brittman, Nadeemullah A. Mahadik, Joseph G. Tischler, Rhonda M. Stroud, Alexander L. Efros, Peter C. Sercel, Janice E. Boercker
Summary: The study presents a method to deposit a PbS shell onto Cu2-xS nanocrystals, enhancing the optical properties of PbS nanocrystals. This structure shows potential for future applications.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Analytical
Chao Liu, Hui Wang, Shengmin Xu, Hongbao Li, Yilin Lu, Chuhong Zhu
Summary: In this study, Fe3O4@SiO2@Au three-layer core/shell nanoparticles were synthesized and modified with 4-mercaptopyridine to form a surface-enhanced Raman scattering (SERS) sensor. The sensor can easily capture mercury ions in water and evaluate their concentration based on the spectral changes of 4-mercaptopyridine. The SERS sensor shows good stability, accuracy, and anti-interference ability, and has the potential to detect actual samples.
Article
Chemistry, Multidisciplinary
Chun-Rong Lin, Oxana S. Ivanova, Dmitry A. Petrov, Alexey E. Sokolov, Ying-Zhen Chen, Marina A. Gerasimova, Sergey M. Zharkov, Yaw-Teng Tseng, Nicolay P. Shestakov, Irina S. Edelman
Summary: Fe3O4@SiO2 core-shell nanoparticles were synthesized and functionalized for studying their magnetic, structural, and adsorption properties. The magnetic core of the nanoparticles showed nanocrystalline structure with an amorphous silica shell, and the nanoparticles exhibited high saturation magnetization. The adsorption studies on three dyes showed that the nanoparticles followed pseudo-second order kinetics and had maximum adsorption capacity for Congo red according to the Langmuir isotherm.
Article
Chemistry, Multidisciplinary
Igor Kon, Andrey Zyubin, Ilia Samusev
Summary: The article presents the results of a mathematical modeling study on the electromagnetic field parameters near the surfaces of core-shell gold-based nanorods in the Au@SiO2 system. The study investigated the electric field parameters of different components and discussed their correlations with nanorod morphology and shell size parameters. The optical properties of the nanoobjects were also simulated and discussed.
Article
Chemistry, Physical
Ping Tang, Meishuang Xing, Liyun Zhong, Xinyue Xing, Huiyang Wang, Shengde Liu, Xiaoxu Lu, Yuwen Qin
Summary: This paper introduces different polyhedral Au nanoparticles as the core of Au@SiO2@Au and analyzes the effect of internal nanogap morphology on local field enhancement. By changing the internal polyhedron-shell nanogap morphology, the polyhedral-Au@SiO2@Au nanoparticle can realize a broadband and tunable strong local electric field enhancement.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Rodrigo A. Valenzuela-Fernandez, Julien Cardin, Xavier Portier, Christophe Labbe, Camilo Segura, Victor Vargas, Antonio Galdamez, Igor O. Osorio-Roman
Summary: This study investigates the interaction between chromium-doped spinels and metallic nanoparticles, aiming to enhance the luminescence efficiency. Surface modification with silica shells leads to surface-enhanced luminescence of the CDSs, potentially improving these systems.
MATERIALS ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Huan Pei, Weifeng Peng, Jiaxin Zhao, Qiyuan Dai, Yong Wei
Summary: We theoretically investigate the plasmon coupling properties of Cu@SiO2 core-shell system and its applications in surface enhanced Raman spectroscopy (SERS) and surface enhanced fluorescence (SEF) technology. The study demonstrates that the SERS and SEF effects strongly depend on the core size, shell thickness, and dimer distance. The optimization of Cu core size and SiO2 shell thickness provides a significant enhancement in Raman and fluorescence EF, making Cu@SiO2 a potential low-cost and sensitive detection technology.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Multidisciplinary Sciences
H. Rajabi-Moghaddam, M. R. Naimi-Jamal, M. Tajbakhsh
Summary: In this study, 1,2,3-triazole derivatives were synthesized using copper(II)-coated magnetic core-shell nanoparticles Fe3O4@SiO2 modified by isatoic anhydride as catalyst. The structure of the catalyst was determined through various analyses. It showed high efficiency and the ability to be recovered and reused for at least 6 consecutive runs.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Biomaterials
Xue Cai, Yuewu Zhao, Li Wang, Mingchao Hu, Zeen Wu, Lifen Liu, Weipei Zhu, Renjun Pei
Summary: Photodynamic/photothermal therapy (PDT/PTT) is a promising approach for cancer treatment, and the combination of Au@MOF core-shell hybrids enhances the synergistic effects of PDT/PTT, effectively killing cancer cells and inhibiting tumor growth with good biocompatibility.
JOURNAL OF MATERIALS CHEMISTRY B
(2021)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)