Article
Multidisciplinary Sciences
Zhongli Huang, Shijian Feng, Qiunong Guan, Tao Lin, Jianhua Zhao, Christopher Y. C. Nguan, Haishan Zeng, David Harriman, Hong Li, Caigan Du
Summary: This study aimed to develop a non-invasive tool for monitoring kidney transplant function using SERS. Results showed significant correlations between urine SERS spectra and conventional chemical markers of kidney transplant function, indicating a strong predictive ability of this method. The urine SERS spectral analysis could be used as a convenient method for rapid assessment of kidney transplant function.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Beibei Shan, Linhu Li, Yawen Zhao, Haitao Wang, Ming Li
Summary: A novel class of Au@Au-Ag dot-in-cubic nanoframes (DCFs) with spectrally tunable plasmonic properties beyond 1400 nm while maintaining a small size has been reported for in vivo photodiagnostics. The synthesis of Au@Au-Ag DCFs is based on facet-selective etching of Ag atoms and co-deposition of Au and Ag atoms, allowing for controllable tailoring of the structure geometry by adjusting silver nitrate and chloroauric acid concentrations. Superior performances of Au@Au-Ag DCFs in in vitro and in vivo NIR-II photoacoustic imaging have been demonstrated, along with remarkable NIR-II surface-enhanced Raman spectroscopy (SERS) activity.
ADVANCED FUNCTIONAL MATERIALS
(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
Chemistry, Multidisciplinary
Yi Lin, Jun Zhang, Yalan Zhang, Sai Yan, Feng Nan, Yanlong Yu
Summary: In this study, Au particles were decorated on Si, ZnO film, and ZnO nanorod arrays simultaneously by an economical method of ion sputtering, generating three types of SERS substrates for R6G detection. The experiment results showed that substrates with Au particles decorated on ZnO nanorods had the highest Raman enhancement factor. Various enhanced mechanisms, including LSPR field coupling, electron transferring induced by LSPR of Au particles, and WGM effect of the ZnO cavity, were presented.
Article
Chemistry, Physical
Bo Zou, Yu Zhou, Yan Zhou, Yanyan Wu, Yang He, Xiaonan Wang, Jinfeng Yang, Lianghui Zhang, Yuxiang Chen, Shi Zhou, Huaixin Guo, Huarui Sun
Summary: The emerging Au-assisted exfoliation technique enables the production of large-area and high-quality ultrathin 2D crystals. A simple and accurate optical method has been developed to determine the layer number of Au-assisted exfoliated MoS2 and WS2 films.
Article
Chemistry, Multidisciplinary
Liudmila Voronina, Cristina Leonardo, Johannes B. Mueller-Reif, Philipp E. Geyer, Marinus Huber, Michael Trubetskov, Kosmas Kepesidis, Juergen Behr, Matthias Mann, Ferenc Krausz, Mihaela Zigman
Summary: The study combines infrared spectroscopy, biochemical fractionation, and proteomic profiling to reveal the origin of IMFs variations in blood sera and demonstrates that disease-related differences in IMFs are primarily influenced by twelve highly abundant proteins. Using these proteins as a pattern may be instrumental in detecting malignancy, advancing our understanding of the infrared spectra of liquid biopsies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Liudmila Voronina, Cristina Leonardo, Johannes B. Mueller-Reif, Philipp E. Geyer, Marinus Huber, Michael Trubetskov, Kosmas Kepesidis, Juergen Behr, Matthias Mann, Ferenc Krausz, Mihaela Zigman
Summary: Infrared spectroscopy combined with proteomic profiling provides insights into the molecular composition of liquid biopsies and disease-related changes in infrared molecular fingerprints. By utilizing contributions from highly abundant proteins as a pattern, detecting malignancy, such as lung cancer, is more feasible. Tying proteomic information to spectral data and utilizing machine learning enhances our understanding of infrared spectra for liquid biopsies applications across various diseases.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Jong-Guk Ahn, Gyeonghun Yeo, Yeji Han, Younghee Park, Jong Wook Hong, Hyunseob Lim
Summary: Using an atomically thin hexagonal boron nitride (h-BN) shielding layer between Au nanoparticles and Au substrates can prevent electrical shorts, improving the sensitivity of Raman detection.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Changmin Park, Dohyun Lim, Seung Mo Kong, Nam-Il Won, Yang Ho Na, Dongha Shin
Summary: This study develops a cost-effective and time-efficient method for detecting nanoplastics, which have received significant attention due to their potential harm to the water environment. The study introduces a substrate that exhibits Surface-enhanced Raman scattering (SERS) activity and allows for the detection of nanoplastics on the substrate using darkfield-based strategy. The technique enables point-by-point detection of single nanoplastics and has universal application in establishing a global map of nanoplastics and advancing our understanding of the environmental life cycle of plastics.
Article
Multidisciplinary Sciences
C. Awada, C. Dab, M. G. Grimaldi, A. Alshoaibi, F. Ruffino
Summary: This study highlights the high optical enhancement observed in Ag/Au alloys and porous gold nanostructures using SERS. The formation of Ag/Au alloy particles and subsequent dealloying process leading to the formation of Au nanoporous particles were observed. The highly enhancement factor in porous gold nanostructures is attributed to the presence of dense strong hot spots and large specific area, showing promising potential for SERS applications.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Qihang Tian, Shiyi Cao, Guangyuan He, Yuting Long, Xuedong Zhou, Jihong Zhang, Jun Xie, Xiujian Zhao
Summary: In this study, Au-Ag alloy nanostars were synthesized and assembled on optical fibers to fabricate fiber probes for ultra-trace molecular detection. The fiber probes demonstrated high sensitivity and good reproducibility, making them suitable for quantitative analysis in chemistry, biology, and other fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Composites
Wenhao Qian, Tao Song, Mao Ye, Xiaoyu Huang, Yongjun Li, Bingjie Hao
Summary: This study successfully prepared nanocomposites of nGO and gold nanoparticles, and confirmed their sensitive and efficient SERS detection performance towards p-phenylenediamine, flavin adenine dinucleotide, and crystal violet molecules. These nanocomposites exhibit good dispersity, especially suitable for SERS sensing applications in environmental and clinical samples.
COMPOSITES COMMUNICATIONS
(2021)
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, Analytical
Xiao-Xia Zhou, Rui Liu, Li-Teng Hao, Jing-Fu Liu
Summary: The accumulation of micro- and nanoplastics in the environment is a major global issue, with concerns about potential harm to wildlife. Identification of nanoplastics in environmental samples remains a challenge, but surface enhanced Raman spectroscopy (SERS) has been shown as a feasible approach to quickly identify and analyze trace polystyrene (PS) nanoplastics. The proposed method has the potential to further study the occurrence, formation, and transports of nanoplastics in the natural environment.
Article
Chemistry, Multidisciplinary
Ran Li, Can-Can Zhang, Dan Wang, Yan-Fang Hu, Yong-Long Li, Wei Xie
Summary: The study revealed that gold nanoparticles can change the pathway of photooxidation reactions, converting C-C triple bonds into carboxyl and acyl chloride groups, highlighting the important role of gold nanoparticles in photocatalysis.
CHINESE CHEMICAL LETTERS
(2021)