Article
Biochemistry & Molecular Biology
Vadim Ershov, Natalia Tarasova, Boris Ershov
Summary: This paper investigates the change in the electronic state of silver nanoparticles under UV irradiation, revealing a shift in the properties of LSPR and IBT bands after the formation of nanoparticles due to an increase in free electron concentration. A quantitative relationship between surface electron density and band shift is derived based on experimental results.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Nanoscience & Nanotechnology
Bo Chu, Yan Li, Yiheng Qin, Taozheng Hu, Facheng Zhong, Fanguang Zeng, Pei Ding, Li Shao, Yinxiao Du, Shuo Tian, Zhuo Chen
Summary: We present a transparent display using a metasurface of silver nanoparticles (Ag NPs) consisting of a transparent substrate and a layer of Ag NPs deposited by a dielectric film. By a simple annealing process, the prepared Ag NPs metasurface shows a deep transmission valley at a wavelength of lambda = 468 nm, enabling transparent display by projecting monochromatic images. Truncated nanospheres formed by deposited Ag NPs exhibit directional scattering properties with a wide angular beamwidth of about 90 degrees, resulting in wide viewing angles and high brightness characteristics of the fabricated displays. The transmission modes can also be controlled by the thickness of the deposited dielectric film to achieve a red-shifted wavelength of lambda = 527 nm. This simple and low-cost approach using traditional thin film deposition and annealing techniques allows for scalable fabrication of transparent displays in large areas.
Article
Physics, Multidisciplinary
M. A. Kononov, V. I. Pustovoy, V. V. Svetikov, B. A. Usievich
Summary: The study found that the rate of change in the excitation angle of SEW is proportional to the concentration of the silver/NaCl aqueous solution up to a dilution of 10^(-10) M. The formation of silver chloride on the surface of the silver film due to the interaction of solution ions with nanoscale clusters of the silver film explains the observed effect. This technique can be used for comparative analysis of concentrations of highly dilute solutions and for studying physicochemical processes in near-surface regions.
FRONTIERS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Ya-Chuan Liang, Qing Cao, Kai-Kai Liu, Xue-Yuan Peng, Lai-Zhi Sui, Shuang-Peng Wang, Shi-Yu Song, Xue-Ying Wu, Wen-Bo Zhao, Yuan Deng, Qing Lou, Lin Dong, Chong-Xin Shan
Summary: Water-soluble red afterglow imaging agents based on ecofriendly nanomaterials have been developed, utilizing CNDs and RhB to create a CNDs-RhB@silica nanocomposite, achieving efficient energy transfer and the best red afterglow performance.
Article
Chemistry, Multidisciplinary
Vittorio Scardaci, Marcello Condorelli, Matteo Barcellona, Luca Salemi, Mario Pulvirenti, Maria Elena Fragala, Giuseppe Compagnini
Summary: Shape control of metal nanoparticles, along with size, plays a critical role in their applications, with anisotropic particles showing superior performance. This study reports a fast and facile method for synthesizing silver nanoplates in a single step, producing anisotropic particles with a mixture of shapes.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Yotasha Thaver, Saheed O. Oseni, Genene Tessema Mola
Summary: Silver doped nickel oxide nanocomposites were synthesized for thin-film organic solar cell applications, resulting in two distinct colors of green and black powders. An optimum concentration of 1 wt% of Ag:NiOx powders yielded the highest power conversion efficiency, while higher concentrations were unfavorable for improving device performance. The synthesized metal NCs significantly improved device performance compared to reference cells.
Review
Chemistry, Multidisciplinary
Vittorio Scardaci
Summary: This paper reviews the synthesis of anisotropic silver nanoparticles, focusing on the factors influencing the process and the role of key molecules like citrate. The different synthesis pathways lead to distinct reaction processes, with proposed applications for the nanoparticles obtained by these methods.
Review
Biochemistry & Molecular Biology
Yinghao Li, Qingwei Liao, Wei Hou, Lei Qin
Summary: The control of surface plasmon using metal micro-nano structures and metal/material composites can generate novel phenomena such as optical nonlinear enhancement, transmission enhancement, orientation effect, high sensitivity to refractive index, negative refraction, and dynamic regulation of low threshold. These phenomena have significant potential in fields such as nano-photonics, super-resolution imaging, energy, sensor detection, and life science. Silver nanoparticles, with their high sensitivity to refractive index change, convenient synthesis, and controllable shape and size, are commonly used in surface plasmon sensors. This review summarizes the basic concept, fabrication, and applications of silver-based surface plasmon sensors.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Jikuan Qiu, Chang Xu, Xianhui Xu, Zhiyong Li, Huiyong Wang, Yang Zhao, Yuling Zhao
Summary: Recovering silver from wastewater can be efficiently done using an ultrastable ionic covalent organic framework (COF) as an adsorbent. The COF has a large surface area, regular pores, and high chemical stability along with a confined ionic interface, making it an excellent material for fast adsorption of silver ions. The exceptional uptake performance of the cationic COF is attributed to the in-situ precipitation of AgBr and adsorption as well as the coordination of O atoms on the framework to silver.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Multidisciplinary
Anran Zhang, Yangping Zhang, Zhangmeng Liu, Gangan Huang, Lihua Wu, Yunzhi Fu, Xiaomei Wang, Yukou Du
Summary: This article reviews the development of anisotropic gold nanostructures, the properties of gold, and its potential for solar energy applications. It provides a detailed introduction to the stability, optical properties, and hot carrier states of gold. The characteristics of anisotropic gold nanostructures in different morphologies are summarized, and the maximum efficiency of solar light utilization is analyzed.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Multidisciplinary
Nouha El Amri, Kevin Roger
Summary: In this study, a nanoemulsion of alkanethiols with an ethoxylated surfactant was used to prevent shape reorganization and arrest reaction kinetics of anisotropic nanoparticles. The optimum thiol concentration for full coverage of silver surface atoms in the synthesis of silver nanoplates was determined based on particle dimensions. The formation of nanoparticles was effectively stopped within milliseconds using a tandem rapid mixers scheme in a continuous flow setup, allowing ex situ monitoring of the reaction.
Article
Chemistry, Physical
Guido Angelini, Carla Gasbarri
Summary: In this study, spherical and monodisperse silver nanoparticles were successfully obtained in aqueous solution at neutral pH using an eco-friendly approach. The SBE-β CD molecules were found to act as stabilizers, preventing aggregation of the AgNPs in solution. Additionally, the dissolution of the nanoparticles was tested through oxidation in the Fenton-like reaction.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Multidisciplinary
Jesse A. Wisch, Xiao Liu, Patrick J. Sarver, Cesar N. Prieto Kullmer, Agustin Millet, David W. C. MacMillan, Barry P. Rand
Summary: An organic diode is demonstrated to transfer energy near-field to molecules in solution through surface plasmon polaritons, which is different from the conventional far-field excitation via absorption of traveling photons. Electrically created excitons couple to surface plasmon modes in the cathode, leading to the subsequent excitation of chromophore molecules. The diode and the near-field energy transfer process are characterized using external quantum efficiency and time resolved photoluminescence measurements. Additionally, the potential of this device for photochemical applications is shown by the ability of excited chromophores to charge-transfer to quencher molecules.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Rais Ahmad, Khalid Ansari
Summary: In this study, Alg@AgNPs bionanocomposite was successfully fabricated and utilized for the removal of CV dye from aqueous solution. The bionanocomposite showed excellent adsorption performance and could be effectively regenerated.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Engineering, Chemical
Ke Liu, Honggang Chang, Gang Xiong, Jinlong He, Qisong Liu, Jinjin Li
Summary: In this study, a rate-based absorption model coupled with an improved thermodynamic model was developed to characterize the removal of acid components and organic sulfur from natural gas. Through validation and analysis of the model, factors affecting the absorption performance of each component were identified, providing insights for optimal design of the absorber column. The improved absorption model demonstrated better characterization of absorption performance and facilitated the optimization of absorber column design.
Article
Chemistry, Multidisciplinary
Junxi Yu, Rajiv Giridharagopal, Yuhao Li, Kaichen Xie, Jiangyu Li, Ting Cao, Xiaodong Xu, David S. Ginger
Summary: By studying graphene with ABAB and ABCA stacking, it was found that the surface potential of ABCA regions is approximately 15 mV higher than that of ABAB regions, due to stacking-dependent electronic structure. The moire superlattice visualized by LPFM can change with time, while imaging the surface potential distribution via SKPM appears more stable for mapping ABAB and ABCA regions.
Article
Nanoscience & Nanotechnology
Lijian Zuo, Sae Byeok Jo, Yaokai Li, Yuhuan Meng, Ryan J. Stoddard, Yun Liu, Francis Lin, Xueliang Shi, Feng Liu, Hugh W. Hillhouse, David S. Ginger, Hongzheng Chen, Alex K-Y Jen
Summary: Research shows that the "dilution effect" mechanism in multi-component organic solar cells can enhance luminescence quantum efficiency and open-circuit voltage, achieving high energy conversion efficiency.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yun Liu, Zilong Zheng, Veaceslav Coropceanu, Jean-Luc Bredas, David S. Ginger
Summary: This study investigates the factors controlling radiative and non-radiative transition rates for charge transfer states in organic systems, highlighting the importance of reducing non-radiative rates to achieve high radiative efficiency and low voltage losses. The research demonstrates that in a model donor/acceptor system, high photoluminescence quantum efficiency and low non-radiative voltage losses can be achieved by reducing the non-radiative decay rate. Additionally, the presence of CT-local exciton (LE) hybridization is confirmed, suggesting the need to evaluate how radiative and non-radiative rates individually influence the PLQY of charge-transfer states.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Physical
Sarthak Jariwala, Rishi E. Kumar, Giles E. Eperon, Yangwei Shi, David P. Fenning, David S. Ginger
Summary: Adding a large A-site cation such as dimethylammonium (DMA) to the perovskite growth solution has been shown to improve the performance and long-term operational stability of halide perovskite solar cells. Through a series of experiments, it is observed that the incorporation of DMA into the perovskite film leads to local heterogeneity, altering the structure and composition, thereby enhancing performance.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Medicinal
David S. Ginger, Madeleine D. Breshears, Justin Pothoof, Rajiv Giridharagopal
Summary: Advances in scanning probe microscopy methods have led to the development of a regression neural network that can extract local dynamics from SPM data with high accuracy and efficiency. The network is independent of the cantilever used and has been validated using both simulated and real microscopy data. The method has been successfully applied to extract accurate information about photoinduced carrier dynamics in a halide perovskite semiconductor film.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2022)
Article
Multidisciplinary Sciences
Siraj Sidhik, Yafei Wang, Michael De Siena, Reza Asadpour, Andrew J. Torma, Tanguy Terlier, Kevin Ho, Wenbin Li, Anand B. Puthirath, Xinting Shuai, Ayush Agrawal, Boubacar Traore, Matthew Jones, Rajiv Giridharagopal, Pulickel M. Ajayan, Joseph Strzalka, David S. Ginger, Claudine Katan, Muhammad Ashraful Alam, Jacky Even, Mercouri G. Kanatzidis, Aditya D. Mohite
Summary: Realizing solution-processed heterostructures in halide perovskites is a long-standing challenge due to solvent incompatibilities. However, by utilizing the solvent dielectric constant and Gutmann donor number, it is possible to grow phase-pure two-dimensional (2D) halide perovskite stacks with desired composition, thickness, and bandgap onto 3D perovskites without dissolving the underlying substrate. The thickness dependence of the 2D perovskite layer shows expected trends for different device architectures, indicating the influence of band alignment and carrier transport limits.
Article
Chemistry, Physical
Margherita Taddei, Joel A. Smith, Benjamin M. Gallant, Suer Zhou, Robert J. E. Westbrook, Yangwei Shi, Jian Wang, James N. Drysdale, Declan P. McCarthy, Stephen Barlow, Seth R. Marder, Henry J. Snaith, David S. Ginger
Summary: This study demonstrates that adding ethylenediamine (EDA) to perovskite precursor solutions can improve the performance and stability of high-bromide-content perovskite photovoltaic devices. The addition of EDA improves film homogeneity and suppresses phase instability, resulting in stable films for over 100 days in ambient conditions. The study also shows that the presence of imidazolinium during crystallization is crucial for the improved perovskite thin-film properties.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Yangwei Shi, Esteban Rojas-Gatjens, Jian Wang, Justin Pothoof, Rajiv Giridharagopal, Kevin Ho, Fangyuan Jiang, Margherita Taddei, Zhaoqing Yang, Erin M. Sanehira, Michael D. Irwin, Carlos Silva-Acuna, David S. Ginger
Summary: We demonstrate that using APTMS as a surface passivator can reduce surface recombination velocity and enhance power conversion efficiency in mixed-cation mixed-halide perovskite solar cells. The study shows that APTMS can passivate defects at the perovskite surface and decouple the perovskite from detrimental interactions at the C-60 interface. The use of APTMS effectively suppresses nonradiative recombination and improves both the fill factor and open-circuit voltage, resulting in increased power-conversion efficiency.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jiajie Guo, Lucas Q. Flagg, Duyen K. Tran, Shinya E. Chen, Ruipeng Li, Nagesh B. Kolhe, Rajiv Giridharagopal, Samson A. Jenekhe, Lee J. Richter, David S. Ginger
Summary: In this study, the performance of ladder polymer BBL as an OECT in aqueous environment is investigated. The film swelling and structural changes during the electrochemical charge injection process are examined using various techniques. The results reveal that the BBL films undergo irreversible hydration and significant water retention, leading to a hydrophilic environment that facilitates efficient ion transport. The rigid ladder backbone of BBL maintains the crystalline order and allows the original dehydrated state to be recovered after drying.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Sebastian O. Furer, Kevin J. Rietwyk, Federico Pulvirenti, David P. McMeekin, Maciej Adam Surmiak, Sonia R. Raga, Wenxin Mao, Xiongfeng Lin, Yvonne Hora, Jian Wang, Yangwei Shi, Stephen Barlow, David S. Ginger, Seth R. Marder, Udo Bach
Summary: ETL-free perovskite solar cells (PSCs) have potential for commercialization due to their simple design and fabrication. However, the interface between indium doped tin oxide (ITO) and perovskite is not optimal. Surface modification of ITO using self-assembled monolayers (SAMs) has shown improvement in device performance, but stability is often overlooked. This study introduces naphthalene-imide SAMs and examines their impact on the thermal stability of triple-cation PSCs, finding that they improve stability and power output.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Polymer Science
Sarah M. West, Duyen K. Tran, Jiajie Guo, Shinya E. Chen, David S. Ginger, Samson A. Jenekhe
Summary: This paper reports the synthesis and properties of BBL-P, a phenazine derivative of ladder poly(benzimidazobenzophenanthroline) (BBL). BBL-P has a broad absorption spectrum with a lowest energy absorption peak at 840 nm in acid solution due to protonation-enhanced intramolecular charge transfer. Compared to BBL, BBL-P thin films have decreased crystallinity with face-on molecular orientations on substrates, resulting in a substantially decreased field-effect electron mobility of 1.2 x 10-4 cm2/Vs. BBL-P films also exhibit excellent mechanical properties with a Young's modulus of 11 GPa. These findings demonstrate the potential of BBL-P as a n-type semiconducting polymer and provide new insights into the effects of backbone structure on the electronic structure, thin film microstructure, and charge transport properties of conjugated ladder polymers.
Editorial Material
Chemistry, Physical
Shinya E. Chen, Rajiv Giridharagopal, David S. Ginger
Summary: An artificial neuron architecture based on antiambipolar organic electrochemical transistors demonstrates similar responsiveness and speed to biological ions and neurotransmitters as real neurons. The soft and biocompatible nature of organic semiconductors holds potential for applications in brain-machine interfaces and in vivo sensing.
Article
Chemistry, Multidisciplinary
Muammer Y. Yaman, Sergei V. Kalinin, Kathryn N. Guye, David S. Ginger, Maxim Ziatdinov
Summary: The application of machine learning is demonstrated for rapidly and accurately extracting plasmonic particles cluster geometries from hyperspectral image data using a dual variational autoencoder (dual-VAE). This approach shares information between the latent spaces of two VAEs, one handling particle shape data and the other handling spectral data, while enforcing a common encoding for shape-spectra pairs. The results show that this approach can establish the relationship between the geometric characteristics of nanoparticles and their far-field photonic responses, allowing for accurate prediction of the geometry of multiparticle assemblies below the diffraction limit using hyperspectral darkfield microscopy in an automated manner.
Article
Chemistry, Physical
Carlo A. R. Perini, Andres-Felipe Castro-Mendez, Tim Kodalle, Magdalena Ravello, Juanita Hidalgo, Martin Gomez-Dominguez, Ruipeng Li, Margherita Taddei, Rajiv Giridharagopal, Justin Pothoof, Carolin M. Sutter-Fella, David S. Ginger, Juan-Pablo Correa-Baena
Summary: Interfacial passivation with bulky organic cations enables high performance for metal halide perovskite optoelectronic devices. The formation of Ruddlesden-Popper 2D phases at perovskite interfaces is influenced by the deposition method, with vapor deposition leading to better phase purity and uniformity compared to solution deposition. Vapor deposition results in higher solar cell performance with narrower distribution, providing important insights for the design of capping layers in perovskite devices.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Shinya E. Chen, Lucas Q. Flagg, Jonathan W. Onorato, Lee J. Richter, Jiajie Guo, Christine K. Luscombe, David S. Ginger
Summary: The electrochemical doping/dedoping kinetics and the performance of organic electrochemical transistors (OECTs) were studied for a series of polythiophene homopolymers. The results showed that OECT materials with more oxygen atoms on the side chains and with the oxygen atom farther from the polymer backbone had better performance. However, replacing the oxygen atom close to the backbone with an alkyl unit increased film conductivity but sacrificed the available doping sites in OECTs. In addition, the study found that the chaotropic anion PF6- facilitated higher doping levels and faster doping kinetics compared to the kosmotropic anion Cl-.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)