Article
Chemistry, Analytical
Qiangting Zheng, Xinyan Teng, Qinyi Li, Zhiyuan Ma, Ye Ying, Yiping Wu, Ying Wen, Xiaoyu Guo, Haifeng Yang
Summary: The study developed a chip for detecting Hg2+ in seawater, which utilizes GSH and gold film on ITO substrate to achieve superior SERS effect, showing quick response to trace Hg2+ ions.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Environmental
Qinyi Li, Qiangting Zheng, Jiamin Gong, Xiaoyu Guo, Haifeng Yang
Summary: In this study, Fe3O4/Ag@IP6-C3 nanomaterials were fabricated, which can enrich PAHs molecules and exhibit a significant SERS effect. The optimized SERS effect of Fe3O4/Ag@IP6-C3 was validated by simulations and experiments. The Fe3O4/Ag@IP6-C3-based SERS protocol showed specific response to pyrene. The detection linear range and limit of detection for pyrene met the related standards.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Yinong Xie, Yongjie Ma, Xueying Liu, Sayed Ali Khan, Wei Chen, Liguo Zhu, Jinfeng Zhu, Qing Huo Liu
Summary: This study proposes a broadband dielectric metasurface sensor based on guided mode resonances (GMRs) with a dual-degree-of-freedom configuration, which enhances the generation of multiplexed quasi-bound states in the continuum (quasi-BICs), showing excellent molecular fingerprint identification performance in the wide THz band. Compared to conventional sensing methods, the metasensor demonstrates signal enhancement factors of over 19 dB in the entire frequency range from 0.9 THz to 1.6 THz and can accurately analyze the sample composition ratios of mixed isomers. The study explores the multiplexing mechanism of quasi-BICs based on the reconfigurable GMR metasurface and promotes its application in high-sensitivity broadband THz molecular fingerprint retrieval, which is promising for nondestructive detection of trace-amount analytes.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Analytical
Jia Li, Tingru Yang, Jihui Lang, Huilian Liu, Ming Gao
Summary: A one-pot hydrothermal synthesis method was developed to prepare Fe-doped MoS2 nanoflowers (Fe-MoS2 NFs) as a surface-enhanced Raman spectroscopy (SERS) substrate. The Fe-MoS2 NFs demonstrate high reproducibility, stability, and recyclability, which are advantageous for the development of a sustainable ecological environment. The SERS substrate offers a high enhancement factor of 10(5), attributed to the inducing defects through Fe doping that enhance charge transfer between probe molecules and MoS2. Fe-MoS2 NFs have been utilized for bilirubin detection in serum, showing a linear detection range from 10(-3) to 10(-9) M with a low limit of detection (LOD) of 10(-8) M. The substrate exhibits excellent selectivity for bilirubin in the presence of other potential interfering molecules (dextrose and phosphate), indicating potential applications of MoS2 in clinical diagnosis.
Article
Chemistry, Multidisciplinary
Shuji Kobayashi, Satoshi Kaneko, Takashi Tamaki, Manabu Kiguchi, Kazuhito Tsukagoshi, Jun Terao, Tomoaki Nishino
Summary: In this study, the isomerization of spiropyran in a single-molecule junction (SMJ) was observed using simultaneous surface-enhanced Raman scattering (SERS) and conductance measurements. SERS spectra were used to discriminate between isomers and conductance measurements, in conjunction with principal component analysis of the SERS spectra, showed the isomeric effect on the conductance of the SMJ.
Article
Physics, Multidisciplinary
S. Guo, B. Ding, X. H. Zhou, Y. B. Wu, J. G. Wang, S. W. Xu, Y. D. Fang, C. M. Petrache, E. A. Lawrie, Y. H. Qiang, Y. Y. Yang, H. J. Ong, J. B. Ma, J. L. Chen, F. Fang, Y. H. Yu, B. F. Lv, F. F. Zeng, Q. B. Zeng, H. Huang, Z. H. Jia, C. X. Jia, W. Liang, Y. Li, N. W. Huang, L. J. Liu, Y. Zheng, W. Q. Zhang, A. Rohilla, Z. Bai, S. L. Jin, K. Wang, F. F. Duan, G. Yang, J. H. Li, J. H. Xu, G. S. Li, M. L. Liu, Z. Liu, Z. G. Gan, M. Wang, Y. H. Zhang
Summary: The research reported on the isomer depletion of Mo-93m, which is the first direct observation of nuclear excitation by electron capture, but the observed results are inconsistent with theoretical expectations. The experimental results raise doubts about the previously reported NEEC phenomenon and highlight the need for further experimental research.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Hamza Qayyum, Said Amin, Waqqar Ahmed, Tarek Mohamed, Zia Ur Rehman, Shafqat Hussain
Summary: This study describes the synthesis of Au-Ag alloy nanoparticles through laser beam exposure of a mixture of monometallic nanoparticle colloids. The alloying process is dependent on the laser wavelength, with 532 nm laser being effective for alloy formation. The synthesized alloy nanoparticles show potential as a SERS substrate, with the detection of probe molecules at low concentrations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Ming Gao, Jiacheng Yao, Jia Li, Rui Su, Yang Liu, Lei Chen, Jinghai Yang
Summary: A simple method was developed to synthesize Ce-doped ZnO with high SERS activity, which exhibited great performance for detecting Bisphenol A with a detection limit of 0.0001 ppm, paving the way for promising applications in contaminant monitoring.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Xi Chen, Shuli Tang, Dallas Freitas, Erin Hirtzel, Heyong Cheng, Xin Yan
Summary: This study presents a novel method for the characterization of phosphatidylcholine isomers using Mn(II)-catalyzed epoxidation. The method allows for the simultaneous identification of carbon-carbon double bond and stereonumbering positional isomers. The bifunctional derivatization takes place in seconds and produces clear and interpretable diagnostic ions.
Article
Chemistry, Physical
Maofeng Zhang, Haoran Sun, Xin Chen, Hongyang Zhou, Liangzhong Xiong, Wei Chen, Zihai Chen, Zhiyong Bao, Yucheng Wu
Summary: A sensitive solid semiconductor-based surface-enhanced Raman spectroscopy (SERS) substrate was successfully synthesized with improved performance for the detection of multiple organic pollutants. The optimized TiO2-Ag-GO substrate showed enhanced signal reproducibility, longer-term stability, and higher detection sensitivity, with potential for various practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Environmental Sciences
Junsong Bao, Hongmin Ren, Jiali Han, Xinrui Yang, Yingxia Li, Jun Jin
Summary: This paper summarizes the main findings of studies on Dechlorane Plus (DP) in human tissues and provides potential guidance for future studies. The highest levels of DP were found in workers at e-waste dismantling sites in China, followed by the general population. DP levels in different human tissues were positively correlated, with the highest levels found in blood, followed by breast milk and adipose tissue. The distribution of DP in human tissues is mainly lipid-driven and may be influenced by its interaction with proteins. Molecular docking appears to be a feasible approach for future studies to predict and reveal the mechanisms of DP behavior and health effects in human tissues.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Rui Su, Yingnan Quan, Shuo Yang, Mingyue Hu, Jinghai Yang, Ming Gao
Summary: A metal-free, Ni-doped MoS2 nanoflowers (NFs) as SERS substrates with a significant enhancement factor were introduced, with remarkable enhancement attributed to factors such as more electrons, improved charge transfer and electromagnetic enhancement, enhanced interface interactions with molecules, and increased specific surface area. The substrate showed super sensitive SERS activity with excellent stability and catalytic activity, promoting the application of MoS2 NFs for biosensors and enhancing understanding of semiconductor enhancement mechanisms as SERS substrates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Spectroscopy
Feng Zhang, Xian Yang, Dan Wang, Linfeng Yu, Yanfang Hu, Aonan Zhu, Cancan Zhang, Yunxiang Zheng, Tailang Yin, Yuying Zhang, Wei Xie
Summary: Rapid, simple, and reliable detection of trace level toxics is important for public health. In this study, a facile method for reproducibly preparing highly uniform self-assembled monolayers of gold nanostars (Au NSs SAM) as SERS substrates was reported. The Au NSs SAM substrates exhibited constant SERS signals without statistical differences and could detect dye molecules at low concentrations. The Au NSs SAM was also successfully applied for trace detection of tetracycline residues in water.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Siyun Cheng, Zhijie Tu, Shuai Zheng, Xiaodan Cheng, Han Han, Chongwen Wang, Rui Xiao, Bing Gu
Summary: A novel SERS-based analytical technique was proposed for simultaneous detection of S. aureus and L. mono using a dual-recognition pattern with high-sensitive SERS tags, providing potential for timely identification of pathogenic bacteria in real samples.
ANALYTICA CHIMICA ACTA
(2021)
Editorial Material
Chemistry, Multidisciplinary
Anindita Das
Summary: Understanding isomerization at the atomic level is crucial for developing diverse nanomaterials. In this article, Xie, Hakkinen, and colleagues present a new approach to achieving reversible isomeric transformation of a gold nanocluster through engineering intermolecular interactions.
