Article
Chemistry, Physical
Quan Doan Mai, Ha Anh Nguyen, Thi Lan Huong Phung, Ngo Xuan Dinh, Quang Huy Tran, Tri Quang Doan, Anh-Tuan Le
Summary: This study investigates the influence of energy levels and alignments of molecular orbitals on the charge transfer process and surface-enhanced Raman scattering (SERS) phenomenon. Experimental results show that the detection of antibiotics on electrochemically synthesized colloidal silver nanoparticles (e-AgNPs) as substrates differs due to the different energy levels of the antibiotics. The hypothesis is confirmed by testing other organic compounds. The study reveals a clear correlation between the energy level of analytes and their SERS signals.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Volodymyr Dzhagan, Nazar Mazur, Oleksandr Smirnov, Oleg Yeshchenko, Oksana Isaieva, Mariia Kovalenko, Mykola Vuichyk, Mykola Skoryk, Yaroslav Pirko, Alla Yemets, Volodymyr Yukhymchuk, Mykhailo Valakh
Summary: Colloidal silver nanoparticles synthesized using Ganoderma lucidum extract are studied as a substrate for enhancement of SERS. The nanoparticles are nearly spherical with a mean size of 20-30 nm, as confirmed by SEM and DLS. The passivating layer on the nanoparticle surface is only a few nm thick, making these nanoparticles suitable for various applications involving plasmonic enhancement and charge or energy transfer.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Ya Lu, Zhuanfang Bi, Guangyi Shang
Summary: Detection of trace carbendazim in agricultural products or environment is challenging but important. A sensitive and recyclable SERS substrate based on a three-dimensional cactus-like Ag nanoparticles/CuO/Cu2O nanocomposite (CACN) has been developed, which has excellent sensitivity, reproducibility, and recyclability.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yuan Zeng, Riddhi Ananth, Tyler J. Dill, Andrea Rodarte, Matthew J. Rozin, Nathan Bradshaw, Eric R. Brown, Andrea R. Tao
Summary: This study demonstrates a nanoparticle-on-metal metasurface platform for highly oriented molecular analysis using surface-enhanced Raman spectroscopy (mSERS). The platform overcomes the issue of low or fluctuating Raman signals in other colloidal nanoparticle platforms and enables nondestructive and low-level analyte detection.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
L. Mikac, I. Rigo, L. Himics, A. Tolic, M. Ivanda, M. Veres
Summary: Detection of microplastics remains challenging due to limitations in current methods, instrumentation, and particle size. In this study, surface-enhanced Raman spectroscopy (SERS) was used to successfully detect polystyrene (PS) and polyethylene (PE) particles in pure water. By synthesizing gold nanoparticles (Au NPs) of different sizes, and optimizing the conditions, efficient and stable SERS signals were observed on PS particles.
APPLIED SURFACE SCIENCE
(2023)
Article
Spectroscopy
Heera Jayan, Da-Wen Sun, Hongbin Pu, Qingyi Wei
Summary: In this study, a novel plasmonic nanoparticles substrate with a mesoporous coating was synthesized for selective enhancement and detection of small molecules. The substrate showed high sensitivity and reproducibility, achieving the detection of chloramphenicol in milk samples. The addition of the mesoporous coating provided additional stability to the nanoparticles, allowing for substrate reusability.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Biotechnology & Applied Microbiology
Veronica Vespini, Simonetta Grilli, Pietro Ferraro, Romina Rega, Heidi Ottevaere, Yunfeng Nie, Pellegrino Musto, Marianna Pannico
Summary: The pyro-electrohydrodynamic jet printing technology was used to fabricate confined assemblies of gold nanoparticles and evaluated for its surface-enhanced Raman spectroscopy (SERS) performance. The results showed strong plasmonic effects, reproducible signals, and affinity with biomolecules, indicating potential applications in biosensing.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Correction
Chemistry, Physical
Xuan-Hung Pham, Eunil Hahm, Tae Han Kim, Hyung-Mo Kim, Sang Hun Lee, SangChul Lee, Homan Kang, Ho-Young Lee, Dae Hong Jeong, Hak Soo Choi, Bong-Hyun Jun
Summary: The author name and corresponding affiliation in the original version of this article were mistakenly labeled.
Article
Nanoscience & Nanotechnology
Hee-Kyung Na, Jisun Ki, Minh-Uyen Le, Kyoung-Shim Kim, Chul-Ho Lee, Tae Geol Lee, Jung-Sub Wi
Summary: The study developed a new type of SERS probe formed by enzyme reactions in the presence of Raman reporters, which achieved uniform and stable signal generation for biomolecule detection on chips over long periods. By applying this approach to a SERS-based immunohistochemistry assay, successful multiplexed protein detection was achieved in brain tissue from transgenic mice.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Himanshu Goyal, Sunitha Sadula, Dionisios G. Vlachos
Summary: This study investigates the impact of selective microwave heating on multiphase reactors, focusing on slurry reactors with solid particles dispersed in liquid. Through experiments, theory, and simulations, they propose an ideal reactor and analytical expressions to predict temperature evolution. The results show a strong influence of solid material and concentration on the heating rate of slurries.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemical Research Methods
Xiaoli Xin, Yi Li, Lu Yu, Weihua Li, Jiansheng Li, Rui Lu
Summary: Ag@C core-shell nanoparticles were prepared by a low-temperature heating-stirring method and subsequently modified with polyethyleneimine (PEI). Ag@C@Ag hybrid nanoparticles were then fabricated with 24-nm Ag NPs attached, demonstrating excellent optical properties for surface-enhanced Raman scattering (SERS) applications. Finite-difference time-domain simulations indicated that the signal enhancement was attributed to the Ag NPs, hot spots, and external assembly, allowing for ultrasensitive spectral analysis.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Tiago Fernandes, Sara Fateixa, Marta Ferro, Helena I. S. Nogueira, Ana L. Daniel-da-Silva, Tito Trindade
Summary: The use of dendrimers in the controlled synthesis of Ag:Au hybrid nanostructures enhances SERS sensitivity to organic pollutants. Dendrimers play a crucial role as multipurpose ligands in the formation of hybrid nanostructures, improving stability and sensitivity. Interparticle plasmonic coupling templated by dendrimer macromolecules contributes to the high SERS sensitivity of the hybrid nanostructures.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Analytical
Jintao Dong, Feng Chen, Li Xu, Pengcheng Yan, Junchao Qian, Yun Chen, Mengying Yang, Henan Li
Summary: A highly sensitive and selective photoelectrochemical aptasensor was developed for detecting trace chloramphenicol. The aptasensor, based on Ag nanoparticles sensitized bismuth oxyiodide composites, showed enhanced CAP detection performance with wide linear range, low detection limit, and superior selectivity. Moreover, the aptasensor exhibited favorable stability and reproducibility.
MICROCHEMICAL JOURNAL
(2022)
Article
Polymer Science
Mayra Matamoros-Ambrocio, Enrique Sanchez-Mora, Estela Gomez-Barojas
Summary: SERS substrates were synthesized using spherical silver nanoparticles adsorbed on Si substrate and opal of PMMA microspheres. Higher concentration of Ag-NPs in the composites led to alteration in the periodicity of PMMA opals and decreased intensity and broadened PBG. The performance evaluation using methylene blue as a probe molecule showed higher enhancement factor (EF) with increased Ag-NP concentration. The EFs of single Ag-NP were nearly 10-fold higher than those of Ag/PMMA composites possibly due to the porosity of PMMA microspheres and the metal-dielectric surface interaction.
Article
Chemistry, Physical
Yingnan Quan, Jia Li, Mingyue Hu, Maobin Wei, Jinghai Yang, Ming Gao, Yang Liu
Summary: This study reports a surface-enhanced Raman spectroscopy (SERS) biosensor, MoS2@ZnO@Ag, for ultrasensitive detection of free bilirubin in serum. The substrate combines the advantages of low cost, simple pretreatment, and high sensitivity, and can accurately and quantitatively analyze actual samples. The detection limit for bilirubin is 10-8 M.
APPLIED SURFACE SCIENCE
(2022)
