Article
Chemistry, Multidisciplinary
Ming Chen, Bin Wang, Jingfan Wang, Hongliang Liu, Zhixiang Chen, Xiaoxuan Xu, Xing Zhao
Summary: In this study, a new type of graphene-wrapped, petal-like, gap-enhanced Raman tags (GP-GERTs) were reported for cell or biological tissue imaging. These nanotags showed narrow spectral linewidth, weak photobleaching effect, and low biological matrix interference. The Raman enhancement mechanism of graphene was revealed through simulations and experimental studies. The GP-GERTs achieved a high total Raman enhancement factor (EF) of 10(10) through petal-like interstitial hotspots and electron transfer between graphene and 4-NBT molecules. The modification of mesoporous silica on GERTs further enhanced their stability and signal intensity, making them suitable for SERS-based bioimaging and multicolor imaging.
Article
Chemistry, Multidisciplinary
Tomoko Inose, Shuichi Toyouchi, Shinnosuke Hara, Shoji Sugioka, Peter Walke, Rikuto Oyabu, Beatrice Fortuni, Wannes Peeters, Yuki Usami, Kenji Hirai, Steven De Feyter, Hiroshi Uji-i, Yasuhiko Fujita, Hirofumi Tanaka
Summary: Graphene nanoribbons (GNRs) have attracted tremendous attention for their potential in next-generation nanoelectronic devices. The authors recently discovered that unzipping from double-walled carbon nanotubes (DWNTs) can produce crystalline single-layered GNRs (sGNRs) with high yield. By using silver nanowire-based tip-enhanced Raman spectroscopy (TERS), the authors analyzed the single GNRs and found heterogeneity in defect density and edge structure, which provides deeper insights into the structure and reaction mechanism of unzipped GNRs.
Article
Spectroscopy
Ming Chen, Xing Zhao, Bin Wang, Hongliang Liu, Zhixiang Chen, Lu Sun, Xiaoxuan Xu
Summary: This study presents a novel graphene-wrapped petal-like gap-enhanced Raman tags with mesoporous silica shells (MS-GPGERTs). These nanoplatforms exhibit great potential for early diagnosis and efficient treatment of diseases, especially tumors, due to their multifunctional capabilities of imaging, diagnosis, and therapy. The results show that MS-GP-GERTs have enhanced photothermal effect and excellent stability in physiological environments, making them promising candidates for repeated photothermal therapy. Additionally, MS-GP-GERTs demonstrate low detection limit, large imaging depth, and great imaging ability for simulated biological tissue and cells.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Chemistry, Analytical
Lanxin Xu, Jiali Ma, Guodong Wei, Chenjie Gu, Tao Jiang
Summary: This study introduces a novel self-energized hybrid substrate for surface-enhanced Raman scattering (SERS) technique, utilizing a distinctive piezoelectric polyvinylidene fluoride (PVDF) film and hydrophilic-hydrophobic strategy. By pressing or bending the PVDF film, the enhanced localized electromagnetic field of Ag nanoparticles (Ag NPs) can be rationally induced, leading to tunable ultra-high sensitivity. The quantitative level of detection is further improved by uniformly anchoring and enriching analytes using a facile hydrophilic-hydrophobic strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Multidisciplinary
Savitha Nalini, Subin Thomas, K. S. Anju, M. K. Jayaraj, K. Rajeev Kumar
Summary: This study demonstrates how chemical vapor deposited monolayer graphene enhances the SERS activity in a conventional plasmonic substrate, and presents the superior performance of the graphene-mediated SERS platform.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Biophysics
Ting Wang, Bing Ji, Zehua Cheng, Ling Chen, Mai Luo, Jinchao Wei, Yuefei Wang, Liang Zou, Yuanzhe Liang, Bingpu Zhou, Peng Li
Summary: Researchers propose a strategy to develop highly reliable and sensitive SERS substrates by constructing Au cores with incompletely wrapped Prussian blue (PB). The balance between signal self-calibration and enhancement is achieved by the approximate semi-wrapping configuration of PB layers on Au cores. The SW-Au@PB nanoparticles show high performance in calibrated SERS signals and enable the detection of hazardous pesticide residues in herbal plants.
BIOSENSORS & BIOELECTRONICS
(2023)
Review
Chemistry, Analytical
Darwin Kurniawan, Yan-Yi Chen, Neha Sharma, Michael Ryan Rahardja, Wei-Hung Chiang
Summary: Graphene quantum dots (GQDs) are a unique carbon-based nanomaterial with high biocompatibility and large surface area, widely used in various fields. By integrating with organic or inorganic materials, GQD nanocomposites can be produced to enhance their application performance.
Article
Chemistry, Multidisciplinary
Hulya Yilmaz, Mustafa Culha
Summary: Pharmaceutical product quality is crucial for patient safety, and impurities and degradation products can have a significant impact on product quality and safety. This study used surface-enhanced Raman spectroscopy (SERS) to investigate the degradation mechanisms and degradation products of pemetrexed (PMT), an antifolate chemotherapy drug, under different conditions.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Chiao-Xian Lin, Wei-Renn Tang, Li-Ting Tseng, Joey Andrew A. Valinton, Cheng-Han Tsai, Alfin Kurniawan, Kevin Chiou, Chun-Hu Chen
Summary: This study found that appropriate wrapping of graphene can enhance the heat dissipation of electronic devices, but excessive graphene can cause aggregation and hinder thermal conductivity.
Article
Materials Science, Multidisciplinary
Miao Yu, Qihang Tian, Guangyuan He, Kaimin Cui, Jihong Zhang
Summary: Surface-enhanced Raman scattering (SERS) is a novel method for low concentration molecular detection, and tapered fiber SERS probes based on silver nanocubes exhibit high sensitivity. These probes can be used for both qualitative and quantitative analysis, with an optimal cone angle of 8.3 degrees.
ADVANCED FIBER MATERIALS
(2021)
Article
Optics
Q. Zhang, D. L. Gao, L. Gao
Summary: This paper demonstrates the dynamic tunability of spin Hall shift of light by changing the Fermi level of graphene-wrapped spheres, especially prominent when different modes interfere with each other. The circular polarization degree in the near field shows the strength of spin-orbit interaction, and the spin Hall effect should be observable in far-field detection in experiments.
Article
Spectroscopy
Tong Zhang, Shunhua Zhu, Jingjing Wang, Zhiying Liu, Mingxin Wang, Shibao Li, Qingli Huang
Summary: Fabricating sensitive, stable and low-cost nanomaterials for glucose detection is crucial for disease diagnosis and monitoring. In this study, a nanocomposite (polypyrrole bridging GO@Au@MnO2) was developed as a novel surface-enhanced Raman scattering (SERS) nanoprobe for quantitative glucose detection in trace serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Multidisciplinary Sciences
Andreij C. Gadelha, Douglas A. A. Ohlberg, Cassiano Rabelo, Eliel G. S. Neto, Thiago L. Vasconcelos, Joao L. Campos, Jessica S. Lemos, Vinicius Ornelas, Daniel Miranda, Rafael Nadas, Fabiano C. Santana, Kenji Watanabe, Takashi Taniguchi, Benoit van Troeye, Michael Lamparski, Vincent Meunier, Viet-Hung Nguyen, Dawid Paszko, Jean-Christophe Charlier, Leonardo C. Campos, Luiz G. Cancado, Gilberto Medeiros-Ribeiro, Ado Jorio
Summary: The twisted bilayer graphene undergoes self-organized lattice reconstruction, resulting in the formation of a superlattice that modulates vibrational and electronic structures, leading to phenomena such as strong correlations and superconductivity. Although experimental techniques and theoretical models face challenges in observing and describing these effects, nano-Raman spectroscopy can localize some vibrational modes and provide insights into the effects of electron-phonon coupling on the material properties.
Article
Chemistry, Multidisciplinary
Yanzhao Pang, Mingliang Jin
Summary: A highly aligned AgNW array film was prepared using a self-assembly method, which showed excellent signal reproducibility and detection ability at low concentrations. The uniform distribution of hot spots inside the AgNW substrate amplified the SERS signal.
Article
Chemistry, Physical
Haining Li, Bing Yang, Biao Yu, Nan Huang, Lusheng Liu, Jiaqi Lu, Xin Jiang
Summary: Treatment of hydrogen plasma on silicon nanowires, followed by coatings of nanocrystalline diamond and multilayer graphene, enables enhanced Raman signals with reduced fluorescent background. The graphene-coated nanowires show lower fluorescent background than diamond-coated ones, with a minimum detection limit of 10(7) mol/L and an enhancement factor exceeding 10(4). The stable Raman enhancement is attributed to hydrogen-terminated graphene and the nanowire structure, independent of graphene layers and maintaining stability after exposure to the atmosphere for a month.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xianguang Ding, Haitao Zhao, Chunyan Li, Qiangbin Wang, Jiang Jiang
Article
Chemistry, Multidisciplinary
Zhengzhe Xie, Yu Zou, Liujun Deng, Jiang Jiang
ADVANCED MATERIALS INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Junheng Chen, Yanyan Tu, Yu Zou, Xiaohong Li, Jiang Jiang
Summary: Electrochemical conversion of CO2 into value-added chemicals, such as formic acid, using copper sulfides nanocrystals synthesized through a simple ethylene glycol solvothermal route showed high Faradic efficiency due to their high S content and specific morphology.
Article
Chemistry, Physical
Xin Huang, Yuyang Guo, Yu Zou, Jiang Jiang
Summary: Substoichiometric cobalt (oxy)hydroxide has been demonstrated as an effective electrocatalyst for selective glycerol oxidation to hydroxypyruvic acid, offering a new perspective for glycerol valorization.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Xin Huang, Yu Zou, Jiang Jiang
Summary: Selective electrochemical oxidation of glycerol can improve the environmental impact and economic feasibility of biodiesel production, while generating valuable C-3 chemicals. Coordination of borate ions with polyol molecules enhances the activity and selectivity of electrocatalysts, leading to high production of C-3 chemicals. This strategy could potentially be applied to a wide range of biomass-derived sugars and polyols for producing value-added chemicals on low-cost non-noble metal electrocatalysts.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yunlong Zhou, Yu Zou, Jiang Jiang
Summary: In this study, a chiral cysteine-directed seeded-growth approach was used to synthesize chorogi-like Au nanoparticles. The obtained nanoparticles exhibit distinct chiral plasmonic response and excellent catalytic activity, offering new opportunities for broadening optical and catalytic applications of Au nanoparticles.
Article
Nanoscience & Nanotechnology
Pengpeng Jia, Yu Zou, Jiang Jiang
Summary: A CuS hybrid hydrogel was constructed for infected wound healing applications using a gelatin-assisted synthesis and direct incorporation strategy. The hydrogel exhibited good mechanical strength, self-healing ability, and resistance to bacterial invasion, and it accelerated skin regeneration. This work provides a promising strategy for synthesizing functional inorganic nanomaterials embedded inside modified natural hydrogel networks for wound healing applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xiaoyuan Liu, Yu Zou, Jiang Jiang
Summary: Using Au/TiO2 as photocatalyst, glycerol oxidation was achieved in a non-pressurized reactor with borate additives. The activity and selectivity of the reaction depended on Au loading, borate concentration, and solution pH. Borate additives not only coordinated and protected oxidized intermediates, but also enhanced the production of superoxide radicals, promoting the formation of C3 products. Under AM 1.5 G irradiation for 4 hours in pH 12 solution, a glycerol conversion rate of 94% was achieved, with C3 product selectivity of 58% on liquid-phase basis and 37% on carbon basis. This finding has implications for future photocatalytic biomass valorization catalyst design, emphasizing the need for balanced oxidative power to guide reaction pathways.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Liujun Deng, Yu Zou, Jiang Jiang
Summary: Plasmonic MoO2-embedded MoNi4 nanosheets were successfully synthesized by thermal annealing, demonstrating strong plasmon absorption and good catalytic activity for 4-nitrophenol reduction. The hybrid catalysts show enhanced catalytic efficiency under visible light irradiation, due to the excitation of MoO2 plasmon inducing an increase in the catalytic activity of MoNi4. Additionally, the catalysts exhibit relative stability even under illumination reaction conditions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Yuyang Guo, Yu Zou, Jiang Jiang
Summary: Cu(i) species are (re)generated via photo-redox reactions, and the polymerization degree and molecular weight can be regulated by controlling the rate of plasmonic hot carrier extraction.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Biomaterials
Haiyan Wu, Pengpeng Jia, Yu Zou, Jiang Jiang
Summary: The study utilizes modified NIR-II absorbing CuS NPs with mitochondria targeting TPP and CD44 targeting hyaluronic acid to achieve active photothermal ablation of tumor cells. This approach demonstrated enhanced tumor uptake and improved tumor growth suppression in in vivo experiments.
BIOMATERIALS SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
He Li, Yu Zou, Jiang Jiang
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Physical
Zhengzhe Xie, Wugang Wang, Ding Ding, Yu Zou, Yi Cui, Lai Xu, Jiang Jiang
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Xia Sun, Yu Zou, Jiang Jiang
CHEMICAL COMMUNICATIONS
(2019)
Review
Medicine, Research & Experimental
Xianguang Ding, Dan Li, Jiang Jiang
