Article
Nanoscience & Nanotechnology
Sezer Seckin, Prem Singh, Amit Jaiswal, Tobias A. F. Koenig
Summary: By utilizing the self-assembly of plasmonic nanoparticles in lattice structures, the sensitivity and uniformity of surface-enhanced Raman spectroscopy (SERS) signals can be significantly enhanced. Through electromagnetic simulations and polarization-dependent SERS measurements, we have developed an effective SERS substrate with higher signal and reduced surface coverage. This colloidal approach enables the cost-effective and scalable fabrication of highly sensitive, uniform, and polarization-dependent SERS substrates.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Zhaoshuai Gao, Pei Wu, Lixin Yin, Bin Kang, Hong-Yuan Chen, Jing-Juan Xu
Summary: This study utilized the nonlinear plasmonic scattering response to achieve single-wavelength super-resolution imaging, successfully implementing this method on a custom-built system to achieve higher resolution than traditional methods.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Xiaojun Song, Yueliang Wang, Yan Hao, Qingqing Zhu, Yanjuan Li, Lei Song, Zhaoxiang Deng
Summary: This study successfully built a series of homo/heterodimeric plasmonic nanomolecules with prescribed compositions using DNA-guided, solvo-driven Ag ion soldering method. Strong in-solution electric-dipole coupling was achieved for materials with strong (Au, Ag) or damped (Pt, Pd) plasmonic responses.
Article
Multidisciplinary Sciences
Chenxi Qian, Kun Miao, Li-En Lin, Xinhong Chen, Jiajun Du, Lu Wei
Summary: VISTA is a label-free superresolution method combining sample expansion and vibrational imaging, enabling high-resolution interrogation of protein-rich biological structures in cells and tissues, with a resolution down to 78 nm.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Xue Cheng, Congyue Liu, Guorui Zhang, Wei Liu, Ju Wang, Yiqun Duan, Jianjun Chen, Hong Yang, Shufeng Wang
Summary: The plasmonic hotspots of metal nanostructures, with their small dimensions beyond the optical diffraction limit, can be precisely located and separated by modulating the hotspot emission. This label-free technique shows potential for efficient and accurate analysis of hotspot distribution.
Article
Multidisciplinary Sciences
Jingwen Shou, Ayumi Komazawa, Yuusaku Wachi, Minoru Kawatani, Hiroyoshi Fujioka, Spencer John Spratt, Takaha Mizuguchi, Kenichi Oguchi, Hikaru Akaboshi, Fumiaki Obata, Ryo Tachibana, Shun Yasunaga, Yoshio Mita, Yoshihiro Misawa, Ryosuke Kojima, Yasuteru Urano, Mako Kamiya, Yasuyuki Ozeki
Summary: Super-resolution vibrational microscopy using photoswitchable stimulated Raman scattering (SRS) overcomes limitations of current techniques and enables the imaging of live cells with excellent chemical specificity and spatial resolution beyond the optical diffraction limit.
Article
Chemistry, Multidisciplinary
Christian Nweze, Tomke E. Glier, Mika Rerrer, Sarah Scheitz, Yalan Huang, Robert Zierold, Robert Blick, Wolfgang J. Parak, Nils Huse, Michael Ruebhausen
Summary: In this study, the plasmonic gold nanoparticles injecting hot carriers into the topological insulator interface of Bi2Se3 nanoribbons were investigated using resonant Raman spectroscopy. The impact of individual gold particles with different sizes on the topological surface states and the phonon modes were resolved. The findings suggest the possibility of locally controlling the electronic properties of the topological insulator by metal nanoparticles through hot carrier injection.
Article
Chemistry, Multidisciplinary
Ruben F. Hamans, Matteo Parente, Andrea Baldi
Summary: Researchers conducted a single-particle study on plasmonic nanoparticles driving a chemical reaction using super-resolution fluorescence microscopy, revealing a correlation between electric field distribution and catalytic activity, which could guide the design of advanced photocatalysts in the future.
Article
Chemistry, Multidisciplinary
Ashutosh K. Singh, Maedeh Pahlevaninezhad, Nael Yasri, Edward P. L. Roberts
Summary: The charge-discharge operation of vanadium redox flow batteries leads to electrode degradation, affecting performance and efficiency. The study shows that electrode degradation is more pronounced in the negative electrode, with differences in mechanism between positive and negative electrodes. Analysis of Raman mapping and X-ray photoelectron spectroscopy reveals changes in surface oxygen functional groups after degradation, indicating differences in degradation mechanism between the two electrodes.
Article
Optics
Hanqing Xiong, Naixin Qian, Yupeng Miao, Zhilun Zhao, Chen Chen, Wei Min
Summary: Super-resolution Raman imaging, which offers higher chemical specificity but lower vibrational contrasts than fluorescence imaging, has been a challenge in achieving biocompatible imaging in the optical far-field. Stimulated Raman Excited Fluorescence (SREF) was discovered as an ultrasensitive vibrational spectroscopy that combines Raman scattering's chemical specificity with fluorescence detection's sensitivity. By integrating STED with background-free FM-SREF, high-contrast super-resolution vibrational imaging with STED-FM-SREF was achieved, offering spatial resolution determined by the signal-to-noise ratio.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Chemistry, Analytical
Ryan E. Leighton, Ariel M. Alperstein, Renee R. Frontiera
Summary: Super-resolution techniques have been developed to address nanoscale heterogeneities in biological and material samples that cannot be resolved with conventional microscopy techniques. In recent years, progress has been made in developing label-free super-resolution techniques, which draw inspiration from successful fluorescence-based methods. These techniques aim to achieve resolutions comparable to fluorescence-based methods and are currently facing challenges.
ANNUAL REVIEW OF ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Physical
Karuppasamy Kohila Rani, Rajkumar Devasenathipathy, Jia-Zheng Wang, Xiao-Yuan Hui, Jian-De Lin, Yi-Miao Zhang, Liu-Bin Zhao, Jian-Zhang Zhou, De-Yin Wu, Zhong-Qun Tian
Summary: In this review, we discuss the latest progress on plasmon-mediated chemical reactions of organic molecules such as para-aminothiophenol, substituted para-aminothiophenol and para-nitrothiophenol at nanostructures modified noble metal electrodes using surface enhanced Raman spectroscopy, electrochemical methods, and theoretical calculations.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Matthias Keil, Alexandre Emmanuel Wetzel, Kaiyu Wu, Elena Khomtchenko, Jitka Urbankova, Anja Boisen, Tomas Rindzevicius, Ada-Ioana Bunea, Rafael J. Taboryski
Summary: This paper demonstrates plasmonic color metasurfaces up to 60 cm(2) in size fabricated using deep UV projection lithography with innovative resolution enhancement techniques. By including transparent assist features in the mask layout, critical dimensions like nanopillar or nanohole diameters and types can be tailored. With the capability to write nanostructure arrays in just a few minutes, this approach shows significant improvement compared to conventional methods.
NANOSCALE ADVANCES
(2021)
Article
Environmental Sciences
Fei Lian, Zhenyu Wang, Baoshan Xing
Summary: Nano-black carbon plays a crucial role in the global carbon cycle, and its functions as a super suspending agent, carrier, and redox mediator during migration from terrestrial to water bodies are increasingly recognized. Further investigations are needed to fully understand the implications of nano-black carbon in water/soil environments.
Article
Chemistry, Multidisciplinary
Lei Yao, Qi Hao, Mingze Li, Xingce Fan, Guoqun Li, Xiao Tang, Yunjia Wei, Jiawei Wang, Teng Qiu
Summary: We propose and demonstrate sandwich plasmonic nanocavities as a surface-selection ruler to illustrate molecular orientations using surface-enhanced Raman spectroscopy. The field vector in the nanocavity presents a transverse spinning feature under specific excitations, allowing the selective amplification of Raman modes of target molecules. This method can be extended as a universal ruler for the identification of molecular orientations.
Review
Chemistry, Multidisciplinary
Judith Langer, Dorleta Jimenez de Aberasturi, Javier Aizpurua, Ramon A. Alvarez-Puebla, Baptiste Auguie, Jeremy J. Baumberg, Guillermo C. Bazan, Steven E. J. Bell, Anja Boisen, Alexandre G. Brolo, Jaebum Choo, Dana Cialla-May, Volker Deckert, Laura Fabris, Karen Faulds, F. Javier Garcia de Abajo, Royston Goodacre, Duncan Graham, Amanda J. Haes, Christy L. Haynes, Christian Huck, Tamitake Itoh, Mikael Ka, Janina Kneipp, Nicholas A. Kotov, Hua Kuang, Eric C. Le Ru, Hiang Kwee Lee, Jian-Feng Li, Xing Yi Ling, Stefan A. Maier, Thomas Mayerhofer, Martin Moskovits, Kei Murakoshi, Jwa-Min Nam, Shuming Nie, Yukihiro Ozaki, Isabel Pastoriza-Santos, Jorge Perez-Juste, Juergen Popp, Annemarie Pucci, Stephanie Reich, Bin Ren, George C. Schatz, Timur Shegai, Sebastian Schlucker, Li-Lin Tay, K. George Thomas, Zhong-Qun Tian, Richard P. Van Duyne, Tuan Vo-Dinh, Yue Wang, Katherine A. Willets, Clauanlai Xu, Hongxin Xu, Yikai Xu, Yuko S. Yamamoto, Bing Zhao, Luis M. Liz-Marzan
Article
Nanoscience & Nanotechnology
Zhuolei Zhang, Yun Yu, Yichao Tang, Ying-shi Guan, Yong Hu, Jie Yin, Katherine Willets, Shenqiang Ren
ADVANCED ELECTRONIC MATERIALS
(2020)
Review
Chemistry, Multidisciplinary
Andrew J. Wilson, Prashant K. Jain
ACCOUNTS OF CHEMICAL RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Jun Wang, Jaeyoung Heo, Changqiang Chen, Andrew J. Wilson, Prashant K. Jain
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Editorial Material
Chemistry, Physical
Emiliano Cortes, Alexander O. Govorov, Hiroaki Misawa, Katherine A. Willets
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Multidisciplinary Sciences
Dinumol Devasia, Andrew J. Wilson, Jaeyoung Heo, Varun Mohan, Prashant K. Jain
Summary: In situ vibrational spectroscopy provides a powerful tool for probing elementary chemical processes on catalytic surfaces. Surface enhanced Raman scattering is used to identify multi-carbon species formed on a Ag nanoparticle catalyst during plasmon-driven reduction of CO2 in water. High spatiotemporal resolution and surface sensitivity allow for the detection of a rich array of C-1-C-4 species on the photoexcited Ag surface, which informs the modeling and engineering of catalysts.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Deborah Ogulu, Pranjal P. Bora, Manisha Bihani, Sudripet Sharma, Tharique N. Ansari, Andrew J. Wilson, Jacek B. Jasinski, Fabrice Gallou, Sachin Handa
Summary: Phosphine ligand-free bimetallic nanoparticles catalyze highly selective reductions of various substrates under aqueous micellar conditions without impacting other functional groups. Multiple analysis methods provide evidence of metal-micelle binding and information about the morphology and chemical composition of the nanoparticles.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Padmanabh B. Joshi, Nawaraj Karki, Andrew J. Wilson
Summary: In this study, the influence of the local environment of H2O on proton-coupled electrochemical reactions was investigated using electrocatalytic CO2 reduction on nanoscale-roughened Ag catalysts as a model system. The results showed that an electrolyte with absorbed H2O could alter the electrochemical activity and enhance the production of CO surface intermediates. It was also found that electrolytes could act as carriers for H2O molecules, enhancing the mass transport of H2O to the electrode surface. These findings highlight the importance of the local environment of H2O in improving the activity and selectivity of proton-coupled electrochemical reactions.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Padmanabh B. Joshi, Andrew J. Wilson
Summary: Plasmon excitation of metal electrodes enhances energy related electrochemical transformations, but low solubility of nonpolar gases and molecular reagents limits product formation in aqueous media. This study measures the enhancement of electrochemical water reduction using plasmonically excited electrodes in a nonaqueous solvent. The photopotential decreases rapidly with increasing solvent polarity and H2O concentration.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Padmanabh B. Joshi, Andrew J. Wilson
Summary: Electrocatalysis is an environmentally friendly method for energy conversion reactions and organic transformations. The use of nanomaterials and single atoms as catalysts improves activity and selectivity, but optimal design of electrocatalytic reactions requires a deep understanding of the dynamic processes of the solid-liquid interface, reaction intermediates, and catalyst structural changes. Real-time tracking of bond breaking and formation events is crucial for catalyst characterization.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
Article
Chemistry, Physical
Jeonghyeon Lee, Padmanabh B. Joshi, Andrew J. Wilson, Youngsoo Kim
Summary: Plasmon-driven photopolymerization is a versatile and efficient method for preparing metal/polymer hybrid nanostructures. In this work, the photopolymerization of acrylic acid on the surface of Au nanoparticles in a colloid using visible light excitation is demonstrated. The influence of excitation light wavelength and sacrificial hole scavenger on electron transfer is revealed. This unique approach provides a new opportunity for synthesizing and employing metal/polymer hybrid nanostructures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Padmanabh B. B. Joshi, Andrew J. J. Wilson
Summary: Measurement of the potential-dependent temporal evolution of intermediates is a critical part in understanding and improving the selectivity and reactivity in electrochemical reactions. In this study, pulsed-potential electrochemical Raman scattering microscopy was applied to measure the evolution of CO during electrocatalytic CO2 reduction on Ag electrodes. Our strategy allows for direct measurement of the temporal evolution of intermediates, providing faster and more accurate results.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jaley Faith Adkins, Amandeep Kaur, Md. Sofiul Alom, Haridas Chandran, Farshid Ramezanipour, Andrew J. Wilson
Summary: This study investigated the potential use of kudzu as a non-toxic, green and biocompatible reducing and stabilizing agent for one-pot Ag nanoparticle synthesis. Ag nanoparticles were synthesized using aqueous and ethanolic kudzu leaf and stem extracts, and their size and dispersity were found to depend on the extract used. The extracts were characterized using UV-visible and FTIR spectroscopies, and the surface species on the Ag nanoparticles were characterized using surface-enhanced fluorescence and Raman scattering. The primary reducing and stabilizing agents in aqueous kudzu leaf extracts were determined to be reducing sugars and saponins, while ethanolic kudzu leaf extract was found to be composed of chlorophyll, reducing sugars, and saponins. The chlorophyll in the ethanolic extract played a key role in the formation of small and monodisperse Ag nanoparticles.
Article
Chemistry, Multidisciplinary
Tharique N. Ansari, Sudripet Sharma, Susanta Hazra, Jacek B. Jasinski, Andrew J. Wilson, Frederick Hicks, David K. Leahy, Sachin Handa
Summary: A sustainable micellar technology is used to design and synthesize ligand-free oxidizable ultrasmall Pd(0) nanoparticles with the shielding effect of nanomicelles, allowing for their catalytic exploration in water-sensitive couplings. The characterization of these nanoparticles reveals their stability, prevention of aggregation, and interactions with other compounds, showcasing the potential applications of this approach in scalable reactions.
Review
Chemistry, Multidisciplinary
Andrew J. Wilson, Dinumol Devasia, Prashant K. Jain
CHEMICAL SOCIETY REVIEWS
(2020)
