Article
Biochemistry & Molecular Biology
Yaxin Wang, Aonan Zhu, Xiaolong Zhang, Yongjun Zhang
Summary: Colloidal lithography is employed to fabricate square-shaped and cone-shaped Au nanostructures, with control of unit spacing by adjusting Au deposition time to achieve enhanced local field, leading to detection limit down to 5 pg/mL for liver cancer marker AFP.
Article
Chemistry, Physical
Carmen Rizzuto, Antonio Ferraro, Antonello Nucera, Giuseppe Emanuele Lio, Riccardo Cristoforo Barberi, Marco Castriota
Summary: In this work, non-patterned multilayer thin films were used as substrates for surface-enhanced Raman spectroscopy (SERS) investigation. The materials and thickness were carefully selected to achieve Fano resonance at the same wavelength of the SERS apparatus. The proposed Ti/Ag/ZnO/Ag/Ti system deposited on a glass substrate exhibited high SERS enhancement compared to a glass substrate.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Analytical
Ping Wen, Feng Yang, Lianggui Tang, Xiaoling Hu, Haixia Zhao, Bin Tang, Li Chen
Summary: This study proposes a method to precisely control SERS active hotspots in multilayer substrates by combining metal nanoparticles with different dielectric constants. The hotspots of the multilayer SERS substrate composed of different nanoparticle monolayers were investigated by simulation and experiment. The results showed that the hotspots could be transferred controllably between different layers by using heterogeneous nanoparticle multilayer structures, which has profound importance in surface analysis.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Applied
A. Lorena Picone, Maria Luz Rizzato, Anabela R. Lusi, Rosana M. Romano
Summary: A novel SERS method for detecting thiram residues in fruit and vegetable peels was reported, showing promising results in experiments.
Article
Chemistry, Physical
Qianqian Shang, Xin Tan, Mingcan Chen, Songyue Han, Tao Yu
Summary: High-efficient SERS substrates containing dense hot spots were fabricated by assembling 3D Ag nanoflowers@Au-FTO substrate using citrate ions as the shape-guiding agent. The vertical growth of 3D AgNFs was attributed to the synergistic effects of the concentration gradient layer of Ag+ and the density gradient of the charge carrier, leading to enhanced SERS sensitivity and repeatability. The improved density of hot spots was contributed by the overlap between the vertically stacked AgNSs with a high population of sharp edges.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Richa Goel, Vimarsh Awasthi, Padmnabh Rai, Satish Kumar Dubey
Summary: The authors demonstrate the feasibility of an electrically tunable SERS sensor by utilizing the electro-optic properties of Lithium Niobate and the plasmonic properties of gold. The proposed gold grating design supports high sensitivity and efficiency, with an electrically tunable stokes wavelength. Tolerance analysis shows that even with deviations in fabrication, the Raman signal enhancement is not severely affected.
Article
Chemistry, Multidisciplinary
Yunpeng Shao, Sha Li, Yue Niu, Zezhou Wang, Kai Zhang, Linyu Mei, Yaowu Hao
Summary: In this study, a facile surface-enhanced Raman scattering (SERS) sensor was developed for on-site detection of trace molecules in liquid phase. A three-dimensional (3D) dendritic Au-Ag nanostructure was constructed in a capillary tube to maximize the spatial electric field and achieve high signal intensification. The unique structure of the capillary enabled on-site detection of trace molecules in liquids.
Article
Spectroscopy
Panfeng Wu, Xiaoping Sun, Nana Hao, Li Wang, Jian Huang, Jianjiang Tang
Summary: The study presents the design and synthesis of a new magnetically recyclable SERS substrate with high sensitivity and repeatability for rapid detection in various fields. The substrate shows promising potential in biosensing, photoelectrocatalysis, and medical diagnosis.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Weiwei Zheng, Wentao Tian, Xiaojun Liu, Qingquan Zhang, Chenghua Zong, Jia-Ping Lai, Wenfeng Zhao
Summary: The study synthesized Ag nanoparticles on polyester fiber membrane surfaces, creating significant SERS activity with "hot spots" and an enhancement factor of 2.1×10^9. Sodium saccharin was bonded to the Ag NPs surface for sensitive and rapid detection of SS in soft drinks. The method is reliable, with a recovery rate ranging from 93% to 103%, suitable for actual sample detection.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Puran Pandey, Min-Kyu Seo, Ki Hoon Shin, Young-Woo Lee, Jung Inn Sohn
Summary: In this study, a hierarchically assembled 3D plasmonic metal-dielectric-metal hybrid nano-architecture was designed and prepared for high-performance surface-enhanced Raman scattering (SERS) sensing. The fabricated PMDM hybrid nanostructures exhibited strong SERS signals with highly enhanced electromagnetic hot spots, achieving outstanding SERS performance.
Article
Nanoscience & Nanotechnology
Zhifeng Yang, Xiaoyu Zhao, Jia Liu, Jiahong Wen, Fengyi Zhang, Xiaojie Guo, Kun Zhang, Jian Zhang, Aofang Wang, Renxian Gao, Yaxin Wang, Yongjun Zhang
Summary: By designing different growth patterns of silver nanoparticles, tunable localized surface plasmon resonance (LSPR) can be achieved in annealed sandwich nanocavity structures. This leads to enhanced electromagnetic fields and surface-enhanced Raman spectroscopy (SERS) signals. The developed nanostructures can be effectively used as stable, nonreproducible, and markable anti-counterfeiting signs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Xing Liu, Jia Xu, Tingting Zhang, Jian Zhang, Debin Xia, Yunchen Du, Yanqiu Jiang, Kaifeng Lin
Summary: In this study, Ag3PO4 nanoparticles loaded with Ag nanoclusters and Ag vacancies (Ag/Ag3PO4-VAg) were constructed to achieve efficient photocatalytic degradation of sulfonamide antibiotics. The loaded Ag nanoclusters effectively inhibit self-photocorrosion and generate localized surface plasmon resonance (LSPR) effect, leading to efficient generation and rapid transfer of photogenerated carriers. The Ag vacancies in Ag3PO4 play a crucial role in enhancing the capture and accumulation of electrons. This research is of great significance for addressing the activity and stability of Ag3PO4 and realizing the green remediation of sulfonamide antibiotics wastewater.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Chengpeng Zhang, Shuai Chen, Zhaoliang Jiang, Zhenyu Shi, Jilai Wang, Lutao Du
Summary: A highly sensitive and stable 3D SERS substrate based on ordered micropyramid array and silver nanoparticles was constructed, showing a low detection limit and high repeatability. The substrate also demonstrated the ability to quantitatively analyze pesticide residues.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Hyun Soo Kim, Hyun Jung Kim, Jaehun Lee, Taeha Lee, Jongsu Yun, Gyudo Lee, Yoochan Hong
Summary: The paper presents a method for liquid biopsy analysis using SERS technology, including the fabrication of a SERS substrate with silver nanosnowflakes for simultaneous detection of creatinine and cortisol in human sweat.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Shaolong Feng, Yaxi Hu, Lei Chen, Xiaonan Lu
Summary: In this study, an ingenious strategy was proposed to hybridize molecularly imprinted polymers (MIPs) with gold nanoparticles for the selective and quantitative detection of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) using surface-enhanced Raman spectroscopy (SERS). The core-shell AuNPs@MIPs nanoparticles were designed to selectively separate and enrich 2,4-D, and an internal standard was embedded for spectral calibration. The results showed accurate differentiation and quantification of 2,4-D in milk at various contamination levels, indicating the potential of this approach for practical agri-food analysis using SERS.
ANALYTICA CHIMICA ACTA
(2022)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)