Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: The study focuses on the plasmonic coupling between noble-metal and semiconductor nanostructures, and reveals the enhanced charge transfer and surface-enhanced Raman scattering (SERS) signals in a designed W18O49/Ag heterostructure. A new coupled-plasmon-induced charge transfer mechanism is proposed, providing insight for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: In this study, we for the first time observed and considered the plasmonic coupling between noble-metal and semiconductor nanostructures in metal/semiconductor heterostructures, using a W18O49/Ag heterostructure composed of Ag nanoparticles and W18O49 nanowires. The heterogeneous structure exhibited a broad and strong surface plasmon resonance (SPR) absorption in the visible wavelength range. Surface-enhanced Raman scattering (SERS) was used to investigate the interactions between metal SPR, semiconductor SPR, and the heterostructure's charge transfer process, revealing that the coupled SPR enhanced the heterostructure's internal charge transfer and SERS signals. A new coupled-plasmon-induced charge transfer mechanism was proposed to explain the improved charge transfer efficiency. This work provides insights for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Kai Cui, Yongming Zhang, Gaoxian Chen, Yanna Cui, Wenwei Wu, Na Zhao, Tize Liu, Zeyu Xiao
Summary: This article introduces a polymer probe for ultrasensitive in vivo Raman imaging. The polymer emits strong Raman signals under near-infrared excitation and enables imaging of micrometastasis and microvasculature.
Article
Materials Science, Multidisciplinary
Wei Liu, Zihan Wang, Xianghu Tang, Zhongping Liu, Ying Xiong, Xin Zhou, Guoxiang Zhu, Zhiyang Zhao, Wenqian Yan, Lingyan Shi, Longjin Huang, Yu Liu, Sheng Cui, Xuan He
Summary: Recent advances in surface-enhanced Raman scattering (SERS) on semiconductor substrates have improved selectivity and cost efficiency. This study proposes a new strategy of developing semiconductor substrates based on aerogels, such as TiO2 aerogels, to generate and enhance multiresonant interband charge transfer pathways for intrinsically activated SERS. The aerogel-based SERS shows wide applicability for ultrasensitive detection of explosives and organic dyes, and provides a new approach for constructing low-cost and high-sensitivity SERS substrate materials.
ADVANCED OPTICAL MATERIALS
(2023)
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
Chemistry, Multidisciplinary
Xiao Tang, Xingce Fan, Jun Zhou, Shuo Wang, Mingze Li, Xiangyu Hou, Kewei Jiang, Zhenhua Ni, Bei Zhao, Qi Hao, Teng Qiu
Summary: The chemical mechanism of surface-enhanced Raman scattering (SERS) amplifies Raman scattering, but the lack of charge transfer between the SERS substrate and molecules hinders Raman enhancement. Two-dimensional transition-metal dichalcogenide alloys with tunable energy levels are investigated to construct charge transfer resonance channels for specific target molecules in SERS. The SERS signals are reproducible, and the dependence of SERS on energy levels is revealed.
Article
Chemistry, Analytical
Tingting Meng, Meirong Shi, Yingcen Guo, Huichao Wang, Nuo Fu, Zhiping Liu, Bo Huang, Chao Lei, Xiaoyu Su, Bo Peng, Ziwei Deng
Summary: This study presents a facile and inexpensive approach for fabricating highly sensitive and recyclable SERS-active substrates. The substrate, consisting of a CuO@Ag microbowl array, exhibits excellent photocatalytic activity and SERS activity. It allows for self-degradation of analytes after SERS detection under visible light illumination and achieves detection sensitivity at the femtomolar level. It also enables multiple detections without compromising the SERS activity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Ruiyuan Zhang, Liang Yu, Hongjun You, Rui Hao, Jixiang Fang
Summary: A robust and practical molecular enrichment strategy has been developed, which effectively confines analyte molecules and gold nanoparticles in a small-sized sensitive region on a needle tip. This strategy utilizes the Leidenfrost phenomenon and capillary force, enabling high sensitivity and specificity in surface-enhanced Raman scattering (SERS) detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Optics
Huiyang Wang, Liupeng Lu, Shengde Liu, Ping Tang, Xinyue Xing, Xiaoxu Lu, Liyun Zhong
Summary: The study introduces a new nanoparticle-fishbone structure system, which achieves ultra-high local electric field enhancement by incorporating the SPP coupler of the fishbone structure, resulting in a SERS enhancement factor of 1011. Experimental results demonstrate the outstanding performance of this system, providing new insights for designing highly sensitive molecule detection devices.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hui He, Lingli Zhou, Zhanchen Guo, Pengfei Li, Song Gao, Zhen Liu
Summary: A novel dual biomimetic recognition-driven plasmonic nanogap-enhanced Raman scattering strategy was reported for ultrasensitive protein fingerprinting and quantitation. By trapping target proteins into plasmonic nanogaps, ultra-high Raman signal amplification was achieved, along with a ratiometric assay for robust quantitation.
Article
Chemistry, Analytical
Jikai Mao, Yanlei Kang, Dongdong Yu, Jianguang Zhou
Summary: The study introduced a surface-enhanced Raman sensing method based on nucleic acid cleavage for quantitative detection of methamphetamine. The sensitive detection was achieved through cleavage and hybridization mechanisms, showing good anti-interference ability and reproducibility in serum.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Qihang He, Yingkuan Han, Yuzhen Huang, Jianwei Gao, Yakun Gao, Lin Han, Yu Zhang
Summary: A dual-enhancement surface-enhanced Raman scattering (SERS) strategy was developed for sensitive quantitative detection of Pb2+, achieving a wide dynamic response range and low detection limit. The sensor showed high Pb2+ specificity and reusability.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Tianya Zhou, Chuan Xu, Wencai Ren
Summary: Graphene grain boundaries possess stronger adsorption capacity and more abundant density of states (DOS), which can improve the graphene-enhanced Raman scattering (GERS) performance. Utilizing this characteristic, superior nanocrystalline graphene (NG) film can be fabricated as a detection platform. The NG film decorated with Au particles exhibits an extremely low detection limit, outperforming other reported graphene-based systems.
Article
Chemistry, Multidisciplinary
Priyash Barya, Yanyu Xiong, Skye Shepherd, Rohit Gupta, Lucas D. Akin, Joseph Tibbs, Hankeun Lee, Srikanth Singamaneni, Brian T. Cunningham
Summary: Assays using fluorophores are common in life science research and diagnostics. However, weak emission intensity limits the detection limits, requiring a large number of labeled target molecules to improve signal-to-noise ratio. This study demonstrates that the synergistic coupling of plasmonic and photonic modes can significantly enhance the emission from fluorophores, resulting in a 52-fold improvement in signal intensity. The method is successfully applied to a sandwich immunoassay for human interleukin-6, achieving a detection limit three orders of magnitude lower than standard immunoassays.
Article
Chemistry, Physical
Swapnil Singh, Aishwarya Agarwal, Anamika Avni, Samrat Mukhopadhyay
Summary: The study demonstrates that electrostatic tethering between surface-modified negatively charged silver nanoparticles and highly positively charged intrinsically disordered N-terminal domain of the prion protein enables highly sensitive protein detection at low concentrations. This novel approach provides a potent and reproducible method for characterizing proteins at nanomolar concentrations.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Quan Wang, Ning Sui, Xiujun Gao, Xiaochun Chi, Lingyun Pan, Ran Lu, Hanzhuang Zhang, Zhihui Kang, Bing Zhao, Yinghui Wang
Summary: A comparative investigation on the photophysical properties of a quinoxaline derivative QDMA2 was conducted using various spectroscopies. It was found that a solvent-stabilized charge-transfer state plays a role in the relaxation process of excited QDMA2, and the aggregated QDMA2 molecules exhibit a correlated color temperature value in organic light-emitting diode testing. Pressure-dependent photoluminescence of aggregated QDMA2 suggests that intermolecular interactions can impact the color and intensity of photoluminescence by adjusting the band gap and irradiative channel of the molecules.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Spectroscopy
Hao Ma, Songlin Liu, Lin Zhu, Chao Ma, Xiaoxia Han, Chengyan He, Bing Zhao
Summary: In this study, vibrational and theoretical analyses of 4-CPH were conducted, revealing an abnormal transformation of the cyano group in the molecule. The study also confirmed the applicability of 4-CPH as a probe for surface-enhanced Raman spectroscopy (SERS).
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Multidisciplinary
Lin Guo, Zhu Mao, Sila Jin, Lin Zhu, Junqi Zhao, Bing Zhao, Young Mee Jung
Summary: Surface-enhanced Raman scattering (SERS) is a powerful tool for studying charge transfer processes, especially when analyzing relative band strengths in core-shell structures involving nanorods with different L/D ratios. Adjusting the surface plasmon resonance (SPR) absorption bands by tuning the L/D ratios of the nanorod cores can directly impact the charge transfer process, and the specific surface area of the nanorods plays a crucial role in this interaction.
Article
Nanoscience & Nanotechnology
Mingrui Han, Gaofeng Liu, Jinlong Jiang, Shangying Lu, Yong Jiang, Yiqian Liu, Bing Zhao, Jiujun Zhang
Summary: The study utilized uniform SnS2 nanosheets coated on a carbon paper skeleton to form a mixed layer of Li2S/Li-Sn, allowing for homogeneous Li deposition and inhibiting the formation of Li dendrites, resulting in improved cycle life and Coulombic efficiency of the electrode.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Shiyu Zhao, Jian Wu, Xiaochun Chi, Ning Sui, Zhihui Kang, Qiang Zhou, Han-zhuang Zhang, Bing Zhao, Yinghui Wang
Summary: The investigation of CsPbBr3 nanorods and cubic CsPbBr3 nanocrystals reveals the anisotropic properties of CsPbBr3 nanorods, with their photoluminescence intensity and radiative lifetime being sensitive to the polarization direction. Additionally, CsPbBr3 nanorods display two-photon fluorescence. These findings provide comprehensive insights into the optoelectronic properties of inorganic halide perovskite nanomaterials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Jian Wu, Shiyu Zhao, Xiaochun Chi, Ning Sui, Zhihui Kang, Qiang Zhou, Hanzhuang Zhang, Xianfeng Li, Bing Zhao, Yinghui Wang
Summary: Inorganic halide perovskite nanocrystals, particularly CsPbBr3 hexagonal nanocrystals, demonstrate superior optical and semiconductor properties compared to cubic nanocrystals. Their photophysical behavior, including rapid electron-hole bimolecular recombination, was thoroughly investigated and compared to the cubic nanocrystals by analyzing their energy band, radiative channel, and carrier recombination under varying temperature and pressure conditions. These findings provide valuable insights into the potential applications of inorganic halide perovskite nanomaterials in the optoelectronic field.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Lin Zhu, Peng Li, Huanhuan Sun, Xiaoxia Han, Yitong Xu, Xiaolei Wang, Bingbing Liu, Yukihiro Ozaki, Bing Zhao
Summary: The study investigates the impact of high pressure on the charge transfer probability in DSSCs, showing that changes in band gap induced by high pressure can enhance CT processes. Additionally, the introduction of Ag NPs in the DSSC system enhances light trapping ability and offers additional CT pathways, potentially improving photoelectric conversion efficiency.
Article
Spectroscopy
Meng Zhang, Yanan Wang, Yan Ma, Xu Wang, Bing Zhao, Weidong Ruan
Summary: In this study, a series of antimony-doped tin oxide nanoparticles were synthesized and used as SERS substrates for the first time, revealing a dependence of the SERS enhancement on the doping ratios. The research indicates a connection between the enhancement effect and the variation of optical band gap energy and free charge carrier densities in conduction bands of the nanoparticles. This provides a new perspective for the development of semiconductor-based SERS substrates and contributes to the understanding of the SERS charge transfer mechanism.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Xin Jiang, Lin Xu, Wei Ji, Weie Wang, Juan Du, Libin Yang, Wei Song, Xiaoxia Han, Bing Zhao
Summary: The effects of electron-hole separation on the sensitivity of semiconductor-based surface enhanced Raman scattering (SERS) were investigated using TiO2/ZnO heterojunction as an example. The results showed that the formation of TiO2/ZnO heterojunction improved the separation of the photogenerated electron-hole pairs and significantly enhanced SERS activity. These findings provide insights into the role of electron-hole separation in semiconductor SERS enhancement and offer a new strategy for designing semiconductor SERS-active substrates with high charge transfer contribution.
APPLIED SURFACE SCIENCE
(2022)
Article
Hematology
Qinglian Wang, Jiangong Lin, Hui Han, Dongfeng Wu, Yan Zhou, Bing Zhao
Summary: This study found that preoperative cardiac index is associated with the maturation and patency of radiocephalic arteriovenous fistula. A decreased cardiac index may be a predictor of an increased risk of failed maturation and a shorter primary patency time.
BLOOD PURIFICATION
(2022)
Article
Engineering, Environmental
Jing Jin, Wei Song, Jiaqi Wang, Linjia Li, Yu Tian, Shoujun Zhu, Yuping Zhang, Shuping Xu, Bai Yang, Bing Zhao
Summary: A uniform and small-sized core-shell Ag/oxidized graphene quantum dots (o-GQDs) nanohybrid with enhanced SERS sensitivity and biocompatibility was prepared for intracellular SERS analysis and potential cancer cell therapy.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yanan Wang, Jing Jin, Hao Ma, Meng Zhang, Qianwen Li, He Wang, Bing Zhao, Weidong Ruan, Guan Yan
Summary: This study investigates the importance of enhancing charge transfer in the AZO/MPy/Ag sandwich structure, and identifies a significant CT route from the CB of AZO to the LUMO of the MPy molecule, which can effectively improve the degree of CT. This discovery is expected to play a crucial role in enhancing SERS.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Spectroscopy
Yan Ma, Qianwen Li, Siyu Wang, Yanan Wang, Hongye Liu, Xu Wang, Bing Zhao, Ziping Jiang, Weidong Ruan
Summary: The application of surface enhanced infrared absorption (SEIRA) is limited by the use of expensive noble metal substrates. This study introduces a new semiconductor SEIRA substrate, indium tin oxide (ITO) nanoparticles, and demonstrates their SEIRA property. Furthermore, the results show that the doping ratio of tin heteroatoms in ITO nanoparticles affects the enhancement factor.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Biochemistry & Molecular Biology
Han Xie, Li Song, Sagie Katz, Jinyu Zhu, Yawen Liu, Jinping Tang, Linjun Cai, Peter Hildebrandt, Xiao Xia Han
Summary: This study investigates the correlation between ROS production and electron transfer between cytochrome c (Cyt c) and the microsomal monooxygenase (MMO) system using resonance Raman spectroscopy. The results reveal that the binding of Cyt c to MMO induces ROS production, which is quantitatively determined by in-situ RR spectroscopy. The research further highlights the important role of oxidized Cyt c in accelerating apoptosis and proposes the involvement of electron transfer in the mitochondria-endoplasmic reticulum pathway. This study provides important insights into the regulation of apoptotic pathways and may have implications in the design of antitumor drugs for cancer therapy.
Article
Chemistry, Multidisciplinary
Jinping Tang, Li Song, Han Xie, Jinyu Zhu, Wei Li, Guangyang Xu, Linjun Cai, Xiao Xia Han
Summary: The study demonstrates the potential of SERRS for monitoring the interaction between mitochondria and endoplasmic reticula in apoptosis. SERRS allows for label-free, in situ, and real-time monitoring of ROS formation and cytochrome c release, providing a novel strategy for cancer treatment.
