Article
Chemistry, Multidisciplinary
Jiahao Pan, Wei Wang, Min Ji, Xing Xing, Zhenda Lu
Summary: This study reports a robust method to synthesize single-crystalline Ag nanocubes with high purity (>95%) and uniform size in oil phase, which has received little attention. The evolution of Ag nanoparticles from different reaction times reveals that multiply twinned seeds and single-crystalline seeds were formed together in the early stage of the reaction. The synthetic parameters such as temperature, air flow, and the concentration of cupric chloride and AgNO3 precursors have been systematically investigated to control the morphology and size of Ag nanocubes, with temperature playing a crucial role.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Jun Watanabe, Yoshiaki Tanaka, Yuusuke Maeda, Yusuke Harada, Yoshitsugu Hirokawa, Hidetaka Kawakita, Keisuke Ohto, Shintaro Morisada
Summary: The use of PNIPAM nanogels with SDS as a capping agent increases the proportion of Pt nanocubes compared to using only linear polymer, while Pt nanocubes are rarely formed when using SDS-free PNIPAM nanogels.
Article
Materials Science, Multidisciplinary
Sheryl L. Sanchez, Yipeng Tang, Bin Hu, Jonghee Yang, Mahshid Ahmadi
Summary: This study explores the growth behaviors and colloidal stability of inorganic cesium lead bromide perovskite nanocrystals synthesized using the ligand-assisted reprecipitation method. It finds that long-chain ligands result in more homogeneous and stable nanocrystals, while short-chain ligands are unable to produce functional nanocrystals with desired sizes and shapes. Excessive amines or polar antisolvents lead to the transformation of nanocrystals into a non-perovskite structure with poorer emission functionalities and larger size distributions.
Article
Chemistry, Physical
Anderson G. M. da Silva, Ruhui Chen, Quynh N. Nguyen, Madeline Vara, Pedro H. C. Camargo, Younan Xia
Summary: This study demonstrated the important roles of reaction temperature, depletion rate of the precursor ions, and atomic diffusion in the synthesis of Pd nanostructures, which determine the final shape and morphology of the products.
CHEMISTRY OF MATERIALS
(2021)
Article
Crystallography
Ausrine Zabielaite, Olegas Eicher-Lorka, Zenonas Kuodis, Ramunas Levinas, Dijana Simkunaite, Loreta Tamasauskaite-Tamasiunaite, Eugenijus Norkus
Summary: This study successfully synthesized g-C3N4 and nanostructures of silver nanocubes with cobalt ferrite, and tested their catalytic activity for hydrogen and oxygen evolution reactions. It was found that Ag@CoFe2O4/g-C3N4 exhibited the highest catalytic activity and the lowest overpotential for HER, making it a promising candidate for practical applications.
Article
Engineering, Electrical & Electronic
Zhongxiang Yao, Gang Bi, Juxin Yin, Zeyu Chen, Chunfeng Cai
Summary: In this study, PbSe nanostructures with branched, I-shaped, and L-shaped nanorods were successfully synthesized and grown by modulating the reaction environment. The morphology and size of the nanorods were found to be affected by reaction time and temperature. Furthermore, it was discovered that the optical properties of PbSe nanorods can be tuned in the near-infrared range. This research expands the potential applications of PbSe nanostructures in fields such as tunable infrared lasers, bioimaging, and solar cells.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Lixiao Shen, Fengdi Tu, Ziqi Shang, Miao Ma, Yunfei Xia, Zigang Zhao, Lei Zhao, Zhenbo Wang, Guangjie Shao
Summary: By introducing CTAB and using a microwave-assisted heating process, the structure and size of platinum nanoparticles can be modulated, resulting in Pt-NPC with higher activity and power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Eung-Dab Kim, Young-Sik Cho, Young-Duk Huh
Summary: In this study, Cu2O microcrystals with various shapes were successfully prepared by adjusting the reaction conditions. The morphology of Cu2O crystals changed with increasing reaction temperature, NaOH concentration, and glucose amount.
Article
Materials Science, Multidisciplinary
Hyung-il Won, Su Young Nam
Summary: This study presents a simple and energy-efficient method for synthesizing silver particles, which can complete the entire reaction within minutes without the need for heating. With ethylene glycol as the reducing agent, ammonium hydroxide and non-transition metal elements as catalysts, tellurium and tin were identified as effective catalysts for forming disk-shaped silver particles. The sintering behavior and electrical properties of the synthesized silver particles were also investigated.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Anas A. M. Alqanoo, Naser M. Ahmed, M. R. Hashim, Munirah A. Almessiere, Sofyan A. Taya, Samer H. Zyoud
Summary: In this study, high purity, ultra-thin silver nanowires were synthesized using a modified polyol technique to design an inexpensive, extremely sensitive porous silicon substrate photodetector. Coating four layers of AgNWs/PSi resulted in the highest photo-to-dark current ratio, indicating the potential for high-performance one-dimensional photodetectors made using AgNWs.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Chao Feng, Zhiwei Zhong, Shudong Lin, Yuan Liu, Jiwen Hu
Summary: A new polyol-based method for the synthesis of silver nanorings was reported, with the effects of PVP molecular weight, KBr concentration, reaction time, and stirring speed on the morphologies studied. The silver nanorings obtained had a ring diameter of around 10 µm and wire diameters in the range of 20-40 nm, showing great potential for applications in nanoscale photonics, plasma devices, and optical manipulation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Nan Liu, Jessica Holmes, Nicolas Bordenave, Eva Hemmer
Summary: The synthesis of sub-micron MMnF3 particles using a rapid microwave-assisted approach is reported in this study. Tunable morphologies, such as rods, ribbons, and plates, were obtained by adjusting the Na+-to-Mn2+ ratio in the reaction mixture. Relaxometric results indicated that poly(acrylic acid)-capped MMnF3 particles exhibited characteristic magnetic properties, suggesting potential T-1-weighted contrast agent capabilities.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Weilun Li, Wenming Tong, Joanne Etheridge, Alison M. Funston
Summary: Shape and size control of metal nanocrystals is important for tuning their physicochemical properties. In this study, the growth mechanisms of gold nanocuboids and the influence of copper additives were investigated. The presence of copper additives led to asymmetrical growth and the formation of nanobars instead of nanocubes, accompanied by a reduction in particle size. This was attributed to a combination of rapid deposition on {111} facets and slow surface diffusion rate introduced by surface copper.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Vindula Basnayake Pussepitiyalage, Shohreh Hemmati
Summary: This study explores the synthesis of Pd nanorods using a sustainable reducing agent in a segmented millifluidic flow reactor. The results show that the initial reduction rate is about 66% faster in the first 45 minutes compared to the rest of the reaction.
Article
Chemistry, Multidisciplinary
Grzegorz Dzido, Aleksandra Smolska, Muhammad Omer Farooq
Summary: This paper presents a study on the synthesis of silver nanowires using the polyol process by conventional and microwave heating. Various polyols with different viscosities and dielectric properties were used as reductants, resulting in nanowires with an average diameter of 119-198 nm. The heating method had a limited effect on the average diameter and length value of the final product, in contrast to the viscosity and dielectric constant of the alcohol used. The performed studies indicate an optimal strategy for fabricating one-dimensional silver nanostructures using the polyol method.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Physical
Koki Taguchi, Takayuki Umakoshi, Shota Inoue, Prabhat Verma
Summary: Plasmonics technologies, including plasmon resonances in optical antennas and plasmon nanofocusing, have enabled important optical applications at the nanoscale. The broadband nanoscale light source carries promising applications due to its ability to span multiple wavelengths at the nanoscale.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Optics
Najat Andam, Siham Refki, Hidekazu Ishitobi, Yasushi Inouye, Zouheir Sekkat
Summary: This paper investigates the complex refractive index of very thin dye-doped polymer films using SPR and profilometry, showing that SPR is suitable for measuring the optical properties of very thin coatings. The results obtained by SPR are in excellent agreement with those obtained by ellipsometry.
Article
Chemistry, Multidisciplinary
Told Moriyama, Takayuki Umakoshi, Yoshiaki Hattori, Koki Taguchi, Prabhat Verma, Masatoshi Kitamura
Summary: This study demonstrates the use of polarization Raman imaging for analyzing the crystal orientation of monolayer DPh-DNTT islands, with the development of an effective analytical method and experimental confirmation of high resolution imaging of the crystal orientation.
Article
Chemistry, Physical
Ryo Kato, Takayuki Umakoshi, Prabhat Verma
Summary: This study demonstrates the nanoscale visualization of optical field distribution and wavelength dependence of localized surface plasmon resonance of gold nanostructures using a TERS-based technique. The results enable a comprehensive understanding of the inherent plasmonic properties of metallic nanostructures, aiding in the development of various plasmonic applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Multidisciplinary Sciences
T. Ichimura, T. Kakizuka, K. Horikawa, K. Seiriki, A. Kasai, H. Hashimoto, K. Fujita, T. M. Watanabe, T. Nagai
Summary: In biological systems, minority cells can have drastic effects on the entire multicellular system. Understanding the mechanisms behind these phenomena requires observing the spatiotemporal dynamics of a large population of cells at sub-cellular resolution, which is made possible with the imaging system AMATERAS. This system allows for high-resolution imaging and high cell-throughput, enabling the detection of rare cells and observation of multicellular events induced by them.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Koichi Honda, Hidekazu Ishitobi, Yasushi Inouye
Summary: The incident angle dependence of Raman scattering for five vibrational modes enhanced by propagating surface plasmon resonance was investigated. The Raman scattering intensity for each Raman band was maximized at a different angle due to the wavelength dependence of the resonance angle. The angular dependence of the enhanced Raman scattered light was the product of the surface plasmon's angular dependence on the excitation light and Raman scattered light, in good agreement with electromagnetic field analysis, including the resonant Raman effect.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Kyoko Masui, Yasunori Nawa, Shunsuke Tokumitsu, Takahiro Nagano, Makoto Kawarai, Hirokazu Tanaka, Tatsuki Hamamoto, Wataru Minoshima, Tomomi Tani, Satoshi Fujita, Hidekazu Ishitobi, Chie Hosokawa, Yasushi Inouye
Summary: In this study, an optical trapping Raman spectroscopic system was developed to quantitatively evaluate the concentration of small objects. Using artificial liposomes that mimic synaptic vesicles, it was found that the optical trapping of vesicles and the detection of spontaneous Raman scattered light can be achieved. The number of glutamate molecules in the trapped liposomes was estimated using a calibration curve, allowing for the measurement of glutamate molecules encapsulated in synaptic vesicles in situ.
Article
Materials Science, Multidisciplinary
Atsushi Nakayama, Yasuaki Kumamoto, Masafumi Minoshima, Kazuya Kikuchi, Atsushi Taguchi, Katsumasa Fujita
Summary: This study demonstrates the use of photopolymerization without photoinitiators to fabricate 3D structures using biocompatible materials. The material properties of poly(ethylene glycol) diacrylate (PEGda) and collagen are preserved, making them suitable for applications with live cells.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Ryo Kato, Toki Moriyama, Takayuki Umakoshi, Taka-aki Yano, Prabhat Verma
Summary: In this study, long-duration TERS imaging of a micrometer-sized WS2 sample was achieved in a reproducible manner, enabling the detection of nanoscale defects and rare optical signals in large area 2D materials.
Article
Nanoscience & Nanotechnology
Ravi Yadav, Takayuki Umakoshi, Prabhat Verma
Summary: The plasmon nanofocusing process is widely used in NSOM for high contrast imaging at the nanoscale. The properties of the metallic tip play a vital role in generating an intense and well-confined nanolight source. In this study, the optical properties of a metallic tip are thoroughly investigated using finite-difference time-domain simulations, providing insights for controlling the tip's optical properties and expanding its applications.
Article
Nanoscience & Nanotechnology
Hirokazu Tanaka, Kyoko Masui, Ryugo Tero, Hidekazu Ishitobi, Siham Recki, Zouheir Sekkat, Yasushi Inouye
Summary: We have developed an optical microscope based on surface plasmon resonance (SPR) to observe the dynamics of potassium ion (K+) concentrations. By measuring the attenuated total reflection spectra, we confirmed that the ionophore chelation reaction changes the refractive index. We successfully observed the dynamics of K+ concentration change through the K+ channels inserted in the lipid bilayer.
Article
Biochemistry & Molecular Biology
Takayuki Haruki, Shota Yonezawa, Keiichi Koizumi, Yasuhiko Yoshida, Tomonobu M. Watanabe, Hideaki Fujita, Yusuke Oshima, Makito Oku, Akinori Taketani, Moe Yamazaki, Taro Ichimura, Makoto Kadowaki, Isao Kitajima, Shigeru Saito
Summary: The dynamical network biomarker (DNB) theory is used to detect early warning signals of state transitions. In this study, the DNB theory was successfully applied to Raman spectra of T cell activation, and the transition state and related DNB Raman shifts were detected.
Article
Chemistry, Physical
Takayuki Umakoshi, Takumi Urakami, Haruki Kidoguchi, Keishi Yang, Prabhat Verma, Hirofumi Sato, Masahiro Higashi, Ikuko Tsukamoto
Summary: In this study, we investigate the molecular vibrations and chemical properties of COA-Cl using Raman spectroscopy. Comparative analysis with similar compounds identified unique Raman peaks originating from the cyclobutane moiety and chloro group of COA-Cl. This research provides fundamental knowledge and crucial insights for the further development of COA-Cl and related chemical species.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Proceedings Paper
Engineering, Industrial
Atsushi Nakayama, Yasuaki Kumamoto, Atsushi Taguchi, Katsumasa Fujita
Summary: This study successfully fabricated three-dimensional micro/nano structures of biocompatible materials using two-photon fabrication technique without the need for photoinitiators. By utilizing a visible-wavelength femtosecond pulsed laser, two-photon polymerization was induced in deep UV absorbing moieties, and the photo-chemical process of the biocompatible material upon visible pulsed laser irradiation was investigated using Raman spectral change.
ADVANCED FABRICATION TECHNOLOGIES FOR MICRO/NANO OPTICS AND PHOTONICS XV
(2022)
Article
Chemistry, Analytical
Takeshi Sugiyama, Alison J. Hobro, Nicolas Pavillon, Takayuki Umakoshi, Prabhat Verma, Nicholas Smith
Summary: The uptake and metabolism of fatty acids by macrophages play vital roles in immune activation, regulation, and various lifestyle diseases. Raman imaging is utilized for evaluating the effects of different fatty acids uptake in macrophages, without modifying endogenous cellular behavior and metabolism.
Correction
Chemistry, Physical
Chen Luo, Yan Shao, Hua Yu, Hong-zhi Ma, Yu-hao Zhang, Long Gu, Bo Yin, Ming-bo Yang
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Stefano Borocci, Armando Camerlingo, Felice Grandinetti, Maria Rutigliano, Nico Sanna
Summary: The complexes of He, Ne, Ar, Kr, and Xe with B3N3H6 were investigated using MP2, CCSD(T), and SAPT ab initio methods. The complexes can be described as mono-, di-, and tri-coordinated to the N atoms, with stability following the order N-mono < N-di < N-tri. The interactions are dominated by dispersion and the binding energies are within the range of 1 or 2 kcal mol(-1). The results were compared with a recent DFT study on larger BN sheets complexes [Phys. Chem. Chem. Phys. 24 (2022) 2554-2566.].
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
V. Nagarajan, R. Bhuvaneswari, R. Chandiramouli
Summary: In this study, stable phosphoborane was used as a sensor to detect isobutane and n-propane in Liquefied Petroleum Gas (LPG). Phosphoborane demonstrated structural stability and semiconducting nature, and exhibited promising adsorption properties for the LPG molecules.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xiaoxi Xu, Zijiang Yang, Bayaer Buren, Maodu Chen
Summary: In this study, the time-dependent wave packet method was used to investigate the reaction channels and mechanisms of Ca+ + HD. The results show that the CaH+ + D reaction channel plays a primary role, which is consistent with experimental results. Complex forming and direct-abstraction reaction mechanisms exist in this reaction process.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Keshab Pandey, Hae Kyung Jeong
Summary: A free-standing silicon-carbon nanofiber composite film was synthesized and investigated for supercapacitor applications. It exhibited high specific capacitance, energy density, and power density. After 5000 cycles, the film showed excellent specific capacitance retention and Coulombic efficiency.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xinyu Zhang, Haosong Li, Xiaoyu Cao, Jing Gao, Yong Wei, Jianzhuo Zhu
Summary: The evaporation behavior of nanosized water aggregations on two-dimensional electroneutral solid surfaces with different surface polar unit densities was investigated. The results showed that the evaporation rate changes non-monotonically with the surface polar unit density, and the minimum evaporation rate is obtained when the surface has a modest surface polar unit ratio of 66.7%.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Yanyan Xu, Rui Dai, Xiaojie Wang, Zhijun Qiao, Haowei Wen, Dianbo Ruan, Yuzuo Wang
Summary: This article presents an innovative solvothermal sodium insertion method for synthesizing Triphylite-NaFePO4, which demonstrates optimal electrochemical performance in sodium-ion batteries.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Meiyi Jiang, Kun Yang, Yancheng Liu, Li Yao
Summary: The geometric structure and electronic properties of transition metal M (M = Cu, Fe, Mn)-TiO2 (101) surface adsorbed by NO2 and N2O were calculated by density functional theory (DFT) and DFT + U theory. The results showed that the adsorption of NO2 and N2O on Mn and Fe atoms is more stable, and a large number of active electrons are formed around these atoms, facilitating the catalytic reactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Sergey A. Vyrko, Yulia G. Polynskaya, Nikita A. Matsokin, Andrey M. Popov, Andrey A. Knizhnik, Nikolai A. Poklonski, Yurii E. Lozovik
Summary: In this study, carbon nanobracelets, which are cyclic molecules composed of alternating polycyclic regions and double carbon chains, were investigated using spin-polarized density functional theory. The results show that carbon nanobracelets with odd number of monomers exhibit distinct electronic energy levels, band gaps, and carbon chain deformation compared to those with even number of monomers.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Chanchan Wang, Quan Yang, Yanzhi Ding, Xiaoyong Lu, Dong Tian
Summary: It has been found that the introduction of buffer layers improves the electrical performance of solid oxide fuel cells (SSOFCs). In this study, varying ratios of Gd-doped CeO2 were used as buffer layers in YSZ-based SSOFCs. The results demonstrate that the performance of SSOFCs is enhanced when a buffer layer is added, with the highest performance achieved using Ce0.8Gd0.2O2-delta (GDC20) as the buffer layer. This suggests that the use of GDC series buffer layers is an attractive strategy to optimize performance loss due to electrolyte-electrode interactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Wang Li, Yi-Fan Zhang, Jia-Bin Huang, Chang-Yang Wang, Feng Zhang, Jiu-Zhong Yang, Long Zhao
Summary: The gas-phase reaction of propargyl with vinylacetylene was investigated using synchrotron photoionization and molecular-beam mass spectrometry methodologies. The formation mechanisms of the resulting cyclic structures were examined using quantum computations. Two previously unidentified isomers were detected and identified for the first time.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Avijit Pramanik, Sanchita Kundu, Olorunsola Praise Kolawole, Kaelin Gates, Paresh Chandra Ray
Summary: This study investigates the influence of aspect ratio and quantum confinement on the single-photon and two-photon absorption cross-section of perovskite CsPbI3 nanorods. Experimental data shows that CsPbI3 nanorods have an extremely high two-photon absorption cross-section, significantly surpassing organic chromophores and other CsPbBr3 nanocrystals. Moreover, adjusting the aspect ratio can significantly enhance the absorption ability. Additionally, the study also reveals a moderate quantum confinement effect on the single-photon and two-photon absorption cross-section of the nanorods.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Hyon-Tae Pak, Jin-A Choe, Kyong-Sik Ju, Yong -Son Rim
Summary: Drug-loaded cellulose diacetate (CDA) membranes were prepared using different compositions of mixed solvent. The microstructure and performance of the membranes were investigated, and a method to predict drug release properties was proposed. The results showed that the composition of the mixed solvent significantly affected the overall performance of CDA membranes, and the release rates of drugs were related to Δdelta and the intrinsic viscosity of CDA.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Gabriella E. Ravin, E. Curotto
Summary: We have developed a systematic approach to optimize the training set sizes for neural networks in fitting ab initio potential energy surfaces. Using this approach, we have constructed several spectroscopic quality potential energy surfaces for [Li(H2)n]+, n = 1 - 9. The ground state properties have been computed for all the systems and selected states.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Guohua Xu, Lei Xu, Feng Zhang, Chunling Yu, Yu Song
Summary: NiS1.03@Ni7S6/carbon composite was successfully prepared using corn stalk as a carbon source via a simple adsorption-sulphurization process. The composite exhibited a specific capacitance of 1554.6 F/g at 1 A/g as a supercapacitor electrode, with a capacitance retention rate of 80.4% after 5000 cycles. Furthermore, the NiS1.03@Ni7S6/carbon//AC asymmetric supercapacitor showed a high energy density of 41.2 Wh kg-1 at a power density of 750 W kg-1, and excellent cycling stability with 86.8% capacitance retention after 10,000 cycles.
CHEMICAL PHYSICS LETTERS
(2024)
