Article
Chemistry, Analytical
Dan Liu, Haibin Tang, Yupeng Yuan, Chuhong Zhu
Summary: Surface-enhanced Raman scattering (SERS) spectroscopy provides sensitive rapid detection of molecules. A simple and effective method using seed-assisted electrodeposition is developed for fabricating a 3D SERS substrate composed of multilayer Au nanoparticles. The resulting multilayer Au nanoparticles-assembled film shows high SERS sensitivity, good spectral uniformity, and reproducibility, with a low detection limit for rhodamine 6G. Moreover, it is also effective in detecting organic pollutants such as crystal violet and methylene blue.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Hung Ji Huang, Ming-Hua Shiao, Yang-Wei Lin, Bei-Ju Lin, James Su, Yung-Sheng Lin, Han-Wei Chang
Summary: The study evaluated the effects of Au cores in Ag shells on enhancing surface-enhanced Raman scattering (SERS) with samples of different Au/Ag ratios. The synthesized Au@Ag-DNFs/Si samples showed that the Au core played a role in focusing the illumination light and enhancing the SERS response of the Ag coverage.
Article
Chemistry, Multidisciplinary
Ming Kong, Yingyi Wu, Dandan Men, Qianqian Ding, Honghua Zhang
Summary: In this study, porous Au-Ag alloy nanoparticle arrays with hydrophobic surfaces were prepared using the polystyrene colloidal crystal template combined with the chemical etching method. The arrays enable rapid and trace SERS detection for biochemical molecules and provide a material basis for the construction of high-quality SERS substrates.
Article
Chemistry, Analytical
W. Cheuquepan, S. Hernandez, M. Perez-Estebanez, L. Romay, A. Heras, A. Colina
Summary: Electrochemistry can be used to generate SERS substrates, utilizing the plasmonic properties of nanos-tructures and the chemical mechanism, with time-resolved Raman spectroelectrochemistry providing valuable information. Comparing Au and Ag metals for folic acid detection in drugs, it was found that Ag SERS substrates outperformed Au SERS substrates in complex samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Brinton King Eldridge, Saghar Gomrok, James W. Barr, Elise Anne Chaffin, Lauren Fielding, Christian Sachs, Katie Stickels, Paiton Williams, Yongmei Wang
Summary: Gap-enhanced Raman tags are a new type of optical probe that utilize the strong electric field inside the gap between two plasmonic metals to enhance the surface-enhanced Raman scattering response. Our study investigated Au@SiO22@Au nanoparticles with varying shell and gap thicknesses and found that the near-field enhancement spectra inside the gap were stronger than on the outer surface of the nanoparticle. We also discovered that a thin shell combined with a thin gap produced the greatest near-field enhancement.
Article
Electrochemistry
Sheila Hernandez, Juan Perales-Rondon, Aranzazu Heras, Alvaro Colina
Summary: EC-SOERS is a new phenomenon that enhances the Raman signal during the oxidation of a metal surface. Studies show that carbonyl and carboxyl groups are necessary to observe this phenomenon, with a delocated charge being important factor. Evaluating the enhancement factors for different molecules with highly delocated charge and a carboxyl group sheds more light on the interaction of molecules with the electrochemically generated SOERS substrates.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Tao Xie, Pan Li, Jiazheng Wang, Ronglu Dong, Liangbao Yang
Summary: The catassembly method allows for the rapid and simple self-assembly of highly repeatable large-scale multilayers with small nanoparticles. The plasmonic multilayers formed using this method demonstrate high sensitivity and stability for SERS sensing applications.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yue Tian, Qingqiang Cui, Hui Ma, Anxin Jiao, Chang Wang, Mengya Zhang, Linqi Zheng, Xuelin Wang, Shuang Li, Guihua Li, Ming Chen
Summary: The study introduces a novel reactor for up-regulated electrochemical LSPR-driven hydrogenation reaction by constructing hierarchical Au pine needles with enhanced lightning rod effect. This approach enhances the catalytic efficiency of plasmonic gold nanomaterials for hydrogenation reactions by introducing an appropriate extra electric field.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jamal Aziz, Naila Nasir, Ehsan Elahi, Awais Ali, Shahid Mehmood, Honggyun Kim, Deok-kee Kim, Arshad Saleem Bhatti
Summary: Metal/semiconductor nanocomposites have the potential to tune the optical and electrical properties of semiconductors at the nanometer scale. The resonant excitation of surface plasmons of metal nanoparticles can couple with semiconductors and tune their optical emissions. This study thoroughly examines the coupling of surface plasmons and excitons using temperature dependent photoluminescence and Raman spectroscopy in Au-NPs coated ZnO nanowires. The results demonstrate the potential applications of Au/ZnO composites in plasmonic based nanoelectronics for memory and neuromorphic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Soohyun Lee, Insub Jung, Jiwoong Son, Sungwoo Lee, Minsun Park, Ji-Eun Kim, Woocheol Park, Jaewon Lee, Jwa-Min Nam, Sungho Park
Summary: We report a synthetic approach for the fabrication of intertwined heterometallic nanorings, in which three differently sized metal rings overlap concentrically. The synthetic method allows control over the core ring component and tunable gap distance. The narrow circular nanogaps between inner and outer Au rings enhance electromagnetic near-field, enabling surface-enhanced Raman scattering at the single-particle level. In particular, when the middle ring component is Pt, the in situ SERS measurement of electrochemical reactions on Pt domains can be monitored due to the near-field focusing assisted by plasmonic Au nanorings.
Article
Chemistry, Physical
Nathanael Downes, Joshua DeMuth, Jacob Waelder, Quintin B. Cheek, Hannah Bartels, Stephen Maldonado
Summary: This study reports the preparation of crystalline Si films by electrochemical liquid phase epitaxy (ec-LPE) at room temperature, demonstrating the existence of low-temperature homoepitaxy. A hybrid method that combines elements of conventional electro-deposition and traditional liquid phase epitaxy is proposed. Experimental data and analysis of micrographs and diffraction data confirm the uniformity and high doping concentration of the prepared films.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Kai-Xuan Xu, Xing Chen, Zongxiong Huang, Zhen-Ni Chen, Junyan Chen, Jian-Jun Sun, Yimin Fang, Jian-Feng Li
Summary: By using a simple freeze-thaw method, assemblies of highly reproducible Ag NPs with SERS activity can be fabricated without the use of ligands, offering long-term stability and reproducibility for practical SERS sensing applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Joshua Raveendran, Aristides Docoslis
Summary: A facile two-step method was used to form Ag core - Au shell nanostructures, which were then used as SERS substrates to detect and quantify toxicants. By combining a data reduction technique and a linear classifier, successful identification and quantification were demonstrated with a high success rate.
Article
Materials Science, Ceramics
Thi Ha Tran, Thi Mai Anh Nguyen, Vu Phuong Thao Dao, Cong Doanh Sai, Thanh Cong Bach, Nguyen Hai Pham, An Bang Ngac, Van Thanh Pham, Thi Kim Chi Tran, Hyeonsik Cheong, Viet Tuyen Nguyen
Summary: This study reports a facile process to fabricate CuO/Au core/shell nanowires, which show high sensitivity as SERS substrates capable of detecting methylene blue at concentrations as low as 10(-13) M. The major advantages of these SERS substrates are their sensitivity, uniformity, and purity without the presence of organic surfactants in the synthesis process.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Chuhong Zhu, Qiangsheng Zhao, Dexian Huo, Xiaoye Hu, Xiujuan Wang
Summary: This study reports a simple electrodeposition strategy for the fabrication of highly surface-roughened gold nanostructure arrays, which exhibit improved SERS intensity with high uniformity. The fabricated thorny gold nanostructure arrays show high SERS sensitivity and detection limits for rhodamine 6G and ferbam, with promising applications in molecular detection. Calibration curves achieved using the fabricated rough gold nanoarrays demonstrate potential for semi-quantitative or quantitative detection. This work offers a facile and effective approach for the rational design of uniform, reproducible, and sensitive SERS substrates.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Hwakyeung Jeong, Jongwon Kim
ACS APPLIED MATERIALS & INTERFACES
(2015)
Article
Chemistry, Physical
Suhee Choi, Suji Kweon, Jongwon Kim
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2015)
Article
Chemistry, Multidisciplinary
Seong Hyeon Kim, Hwakyeung Jeong, Jongwon Kim, In Su Lee
Article
Chemistry, Multidisciplinary
Minju Kim, Hwakyeung Jeong, Euna Lee, Jongwon Kim
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2015)
Article
Electrochemistry
Jinsuk Kim, Dajeong Kim, Si Young Choi, Sung-Dae Kim, Jae Yong Song, Jongwon Kim
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Physical
Dong-Gyu Lee, Hwakyeung Jeong, Ki-Wan Jeon, Luojiang Zhang, Kwanghee Park, Sunmin Ryu, Jongwon Kim, In Su Lee
JOURNAL OF MATERIALS CHEMISTRY A
(2017)
Article
Chemistry, Physical
Jung Hun Koo, Amit Kumar, Seonhee Lee, Xing Jin, Hwakyeung Jeong, Jongwon Kim, In Su Lee
CHEMISTRY OF MATERIALS
(2018)
Article
Chemistry, Analytical
Euna Lee, Moonchang Sung, Yumi Wang, Jongwon Kim
Article
Chemistry, Physical
Moonchang Sung, Jongwon Kim
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Multidisciplinary
Minju Kim, Jongwon Kim
Article
Chemistry, Analytical
Seongjin Roh, Jongwon Kim
Article
Multidisciplinary Sciences
Taejung Lim, Moonchang Sung, Jongwon Kim
SCIENTIFIC REPORTS
(2017)
Article
Chemistry, Analytical
Yumi Wang, Jongwon Kim
Article
Chemistry, Analytical
Siyeon Lee, Jongwon Kim
Summary: The study presents a straightforward method for preparing NPG on micrometer-scale electrodes and shows that this method is not limited by electrode geometry. The experiment also demonstrates efficient glucose detection using a UME with NPG surfaces.
Article
Chemistry, Multidisciplinary
Xiangyun Xiao, Hwakyeung Jeong, Joseph Song, Jae-Pyung Ahn, Jongwon Kim, Taekyung Yu
CHEMICAL COMMUNICATIONS
(2019)
Article
Chemistry, Analytical
Yujia Ying, Huilin Li
Summary: Enzymes play a crucial role as biological catalysts in accelerating biochemical reactions in living organisms. This study proposes a convenient method for monitoring enzymatic catalytic processes using native top-down mass spectrometry. By exploring the heterogeneity of the chymotrypsin sample and using tandem mass spectrometry, the researchers were able to monitor covalent and noncovalent enzymatic complexes, substrates, and products during catalysis. The results demonstrate that this method has the potential to be a promising tool for characterizing biocatalysts.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Kang Yang, Shuaibo Shi, Jinyu Wu, Shaolong Han, Shengdi Tai, Shishen Zhang, Kun Zhang
Summary: H2O and D2O are important analogues closely related to various industries and monitoring fields. This study successfully distinguishes and detects H2O and D2O by designing a novel eu(III)-macrocycle with dual emitters, Eu-2a, and conducting fluorescence titration experiments.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Julia Kuligowski, Alvaro Perez-Rubio, Marta Moreno-Torres, Polina Soluyanova, Judith Perez-Rojas, Ivan Rienda, David Perez-Guaita, Eugenia Pareja, Ramon Trullenque-Juan, Jose Castell, Marcha Verheijen, Florian Caiment, Ramiro Jover, Guillermo Quintas
Summary: This study introduces a novel variable selection approach called cluster PLS (c-PLS) to assess the joint impact of variable groups selected based on biological characteristics on the predictive performance of a multivariate model. The usefulness of c-PLS is shown using miRNomic and metabolomic datasets obtained from the analysis of liver tissue biopsies.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Meixue Lai, Lijie Zhong, Siyi Liu, Yitian Tang, Tingting Han, Huali Deng, Yu Bao, Yingming Ma, Wei Wang, Li Niu, Shiyu Gan
Summary: This study presents a method for constructing wearable sweat electrolyte sensors using carbon fiber-based solid-contact ion-selective electrodes (SC-ISEs). By using carbon fibers extracted from commercial cloth as electrode material, the cost and reproducibility issues of flexible SC-ISEs were addressed. The results showed that the carbon fiber-based SC-ISEs exhibited reversible voltammetric and stable impedance performances, and had high reproducibility of standard potentials between normal and bending states.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Yang, Ying Liu, Min Deng, Peipei Wang, Dan Cheng, Songjiao Li, Longwei He
Summary: A near-infrared fluorescent probe has been developed to accurately measure the levels of peroxynitrite (ONOO-) in the endoplasmic reticulum (ER) in acute lung injury (ALI). The probe demonstrated rapid response, high selectivity, good sensitivity, and enhanced fluorescence intensity in response to ONOO-. It was successfully used to detect changes in ONOO- levels and showed significant increases in an ALI cell model and an ALI mouse model.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yanping Wang, Yuemei Chen, Kejun Li, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang
Summary: In this work, a portable analytical system based on point discharge chemical vapor generation atomic emission spectrometry (PD-CVG-AES) coupling with gold filament enrichment was designed. The highly sensitive analysis of Hg2+ indirectly realized the detection of ascorbic acid (AA). The measurement is based on the fact that Ag+ can decrease the concentration of Hg2+ by forming Ag-Hg amalgam in the presence of the reductant SnCl2, while AA can pre-reduce Ag+ to Ag0, leading to the generation of silver nanoparticles (Ag NPs). The developed novel analytical strategy broadens the application of microplasma-based AES and offers a higher level of sensitivity compared to current AA detection techniques.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yundi Huang, Bo Song, Kaiwen Chen, Deshu Kong, Jingli Yuan
Summary: This study developed two lysosome-targetable background-free TGL probes for efficient and accurate detection of 1O2, which can be used for monitoring endogenous 1O2 concentrations in lysosomes and discriminating variability induced by different photosensitizers. Furthermore, a smart luminescent sensor film was successfully prepared for on-site 1O2 production detection during PDT processes, offering a promising clinical monitoring tool for skin diseases.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Wei Lang, Jia-Mei Qin, Qian-Yong Cao
Summary: A novel polymer-based probe P1 was successfully synthesized for fluorescently ratiometric sensing of H2S with high selectivity and sensitivity. A smartphone sensing platform was constructed to conduct visual quantitative detection of H2S. P1 can be employed in evaluating the level fluctuations of H2S in living cells, testing water samples/wine samples, and monitoring food freshness.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yuanyuan Qin, Shuda Liu, Shuyun Meng, Dong Liu, Tianyan You
Summary: The study developed a split aptamer-based sandwich-type ratiometric biosensor for the detection of 17 beta-estradiol (E2) using photoelectrochemical and electrochemical assays. The biosensor utilized split aptamer fragments to recognize E2 and trigger a hybridization chain reaction, resulting in the production of double-stranded DNA labeled with CdTe quantum dots. This DNA complex was able to sensitize CdTe quantum dots and generate response signals for E2 detection. The developed biosensor demonstrated high sensitivity and accuracy with two linear ranges and low detection limits.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Siriwan Teepoo, Jongjit Jantra, Khaunnapa Panapong, David Taiwo Ajayi
Summary: A novel immunochromatographic assay based on hyperbranched Au plasmonic blackbodies with a smartphone readout was developed for rapid and sensitive detection of leucomalachite green residues in fish and shrimp products.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Andrea L. Larraga-Urdaz, Borja Moreira-Alvarez, Jorge Ruiz Encinar, Jose M. Costa-Fernandez, Maria Luisa Fernandez-Sanchez
Summary: A major challenge in the 21st century is the development of point-of-care diagnostic tools. In this study, a highly sensitive and simple bioassay using AuNPs and MNAzymes was developed for rapid detection and quantification of miRNA-4739. The proposed strategy shows potential for breast cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Xiaohan Zhao, Anyu Wang, Lingzi Zhai, Jiuhe Gao, Sizhe Lyu, Yingshan Jiang, Tian Zhong, Ying Xiao, Xi Yu
Summary: A novel method using polystyrene-coated magnetic nanoparticles for extracting monohydroxy polycyclic aromatic hydrocarbons from urine samples was investigated. The proposed method is simple, sensitive, and efficient, with desirable sensitivity for analyzing low-abundance metabolites in large volumes of complex urine samples.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Quan, Yuqing Zeng, Wenke Zhang, Fengfeng Li, Mengjiao Li, Zhihe Qing, Linlin Wu
Summary: In this study, a visual and reusable biosensor was developed for detecting substrates that are closely associated with human physiological health. The immobilized oxidase showed higher stability and sensitivity under harsh conditions, enabling reliable detection of substrates in complex fluids.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Dongjuan Wang, Xiuqian Ding, Jinling Xie, Juan Wang, Guanhao Li, Xin Zhou
Summary: In this study, a three-in-one sensor was developed for real-time detection of biogenic amines (BAs) with high sensitivity and selectivity. The sensor showed multimodal responses and could be used to fabricate portable devices for on-site non-destructive assessment of food spoilage indicators.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Jinting Meng, Zihao Xu, Shasha Zheng, Hongqun Yang, Tianfu Wang, Hong Wang, Yingwei Zhang
Summary: This study demonstrates the development of a cascade signal amplification system using a multi-pedal DNA walker and strand displacement reactions for the electrochemical detection of miRNA-155. The biosensor exhibited high sensitivity, selectivity, and the potential for clinical applications.
ANALYTICA CHIMICA ACTA
(2024)