Article
Chemistry, Multidisciplinary
Klaudia Hurtukova, Nikola Slepikova Kasalkova, Dominik Fajstavr, Ladislav Lapcak, Vaclav Svorcik, Petr Slepicka
Summary: In this study, we used a high-energy excimer laser to expose a nanodiamond layer. The treatment was conducted in high-vacuum conditions and involved high-temperature changes to the carbon in the form of nanodiamonds (NDs). The changes in carbon form and the creation of a Q-carbon phase were investigated using various spectroscopy and microscopy techniques. The results showed that the NDs layer transformed into a fibrous structure resembling Q-carbon fibers with increasing laser energy.
Article
Chemistry, Multidisciplinary
Marcel A. Strauss, Hermann A. Wegner
Summary: The importance of London dispersion interactions in solution is a subject of ongoing debate, with the attenuation degree still not properly understood. Experimental results suggest that intramolecular dispersion is only marginally influenced, while the properties of the solvent significantly impact the half-life.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Pharmacology & Pharmacy
Elena Perevedentseva, Yu-Chung Lin, Chia-Liang Cheng
Summary: Nanodiamond has shown great potential as a platform for drug delivery, with ND-X complexes being more efficient compared to pure drugs, although ND particles smaller than 10 nm may possess higher toxicity and aggregation. Further research is needed to explore the accumulation of ND in animal organs and the long-term effects of its release.
EXPERT OPINION ON DRUG DELIVERY
(2021)
Article
Chemistry, Physical
Ales Vlk, Martin Ledinsky, Andrey Shiryaev, Evgeny Ekimov, Stepan Stehlik
Summary: The bottom-up high-pressure, high-temperature synthesis method allows for unprecedented control over the size of nanodiamonds. In this study, nanodiamonds with sizes ranging from 1.2 to 8 nm were analyzed using multiwavelength Raman spectroscopy. The low-frequency acoustic Raman modes were utilized to determine the size of quantum-sized sub-3 nm nanodiamonds, showing remarkable agreement with other measurement methods such as XRD and HRTEM.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Bruce A. Kowert
Summary: Capillary flow techniques were used to determine the translational diffusion constant of squalene in various alkanes and cyclohexanes, showing significant variation. The modified Stokes-Einstein equation yielded an average absolute percentage difference of 7.72% between experimental and calculated values.
Article
Chemistry, Multidisciplinary
Kai Gu, Shuzhen Liu, Chunming Liu
Summary: The development of single-molecule techniques allows for the investigation of individual molecules' properties and heterogeneities, which are difficult to obtain through ensemble measurements. This study aimed to optimize the surface preparation procedures for single-molecule fluorescence imaging in organic solvents. The researchers developed a method to control the surface density of chemically immobilized dye molecules and reduce nonspecific adsorbed impurities. The impacts of solvent polarity and surface functionality were also studied, with higher polarities leading to better control and reduced adsorption. The researchers further performed single-molecule fluorescence imaging and studied the photophysical properties of dyes and impurities in DMF, which could be used to filter out false counts in measurements.
Article
Chemistry, Multidisciplinary
Jelena Lazovic, Eberhard Goering, Anna-Maria Wild, Peter Schuetzenduebe, Anitha Shiva, Jessica Loeffler, Gordon Winter, Metin Sitti
Summary: Nanodiamonds have great potential for diverse applications and can be visualized and tracked using non-invasive imaging techniques. They possess paramagnetic properties that enable them to provide high contrast to noise ratio in MRI for cell labeling and tracking.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shadi Houshyar, G. Sathish Kumar, Rajiv Padhye, Robert A. Shanks, Amitava Bhattacharyya
Summary: Preparation and characterization of nanodiamond dispersed polyamide-based filament were studied, showing enhanced thermomechanical properties and superior tensile strength and toughness. The incorporation of nanodiamond also resulted in higher thermal stability, delaying thermal degradation, making this composite material suitable for high performance applications.
Article
Chemistry, Physical
Renata Chroma, Maria Vilkova, Ivan Shepa, Patrycja Makos-Chelstowska, Vasil Andruch
Summary: Deep eutectic solvents (DES) are considered as potential alternatives to hazardous organic solvents, formed by acceptor and donor of hydrogen bonds. In analytical chemistry, they are used for sample separation before instrumental quantification. Spectroscopy studies of TBAB-Gly-based DESs revealed the existence of hydrogen bonds between TBAB and Gly at all molar ratios.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Chemistry, Analytical
Goutam Pramanik, Soumabha Bag, Sabyasachi Chakrabortty
Summary: The interest in utilizing nanodiamonds as nanotheranostics has been growing rapidly due to their unique properties, such as high refractive index, low toxicity, inertness, and magneto-optical properties. Current research focuses on the combination of diagnostics/imaging and therapy using nanodiamonds, with an emphasis on surface engineering for bioactive interactions. Customized nanodiamonds with diagnostic and therapeutic features hold great potential for advancing personalized medicine.
Article
Pharmacology & Pharmacy
Yue Cao, Dipesh Khanal, Jinhee Kim, Rachel Yoon Kyung Chang, Alex Seungyeon Byun, Sandra Morales, Mark M. Banaszak Holl, Hak-Kim Chan
Summary: This study investigates the effect of common organic solvents on the stability of bacteriophages. The results show that the bacteriophages are more stable in alcohols and DMSO, and myoviruses tend to be more stable than podoviruses. The choice of solvents for phage formulation depends on the specific phage and solvent types.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Chemistry, Multidisciplinary
Dongchao Zhang, Dali Yang, Shengchun Wang, Li Zeng, Jie Xin, Heng Zhang, Aiwen Lei
Summary: This study investigated the structure of palladium acetate in solution using X-ray absorption fine structure (XAFS) spectroscopy, revealing that monomer is the main form for Pd(OAc)(2) in various solvents. Additionally, Pd(II) can be reduced to Pd(0) in ethanol solution. The structural information obtained will help in understanding the mechanism of Pd(OAc)(2) involved organic reactions.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Qi Zheng, Xian Shi, Jinyang Jiang, Haiyan Mao, Nicholas Montes, Nikolaos Kateris, Jeffrey A. Reimer, Hai Wang, Haimei Zheng
Summary: This study investigates the influences of small sizes and defects on cubic diamond nanostructures using transmission electron microscopy, electron diffraction, multislice simulations, and other techniques. The experimental and simulation results reveal that cubic nanodiamonds smaller than 5 nm and with defects can display forbidden reflections, providing insights into the structural complexity and the impact of defects on nanodiamond structures.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Samuel J. Francis, Marco D. Torelli, Nicholas A. Nunn, Gowthami M. Arepally, Olga A. Shenderova
Summary: Thrombosis is a major health issue in the United States and there is a lack of understanding about its causes, progression, and response to anticoagulant therapy. This study demonstrates the use of fluorescent nanodiamond (FND) as a label for blood clots, which offers advantages over organic fluorophores, such as reduced photodegradation. The addition of tissue plasminogen activator (tPa) allows visualization of clot lysis, which is important for studying the resolution of deep vein thrombosis and pulmonary embolism.
Article
Chemistry, Physical
Nathan T. Hahn, Ethan P. Kamphaus, Ying Chen, Vijayakumar Murugesan, Karl T. Mueller, Lei Cheng, Kevin R. Zavadil
Summary: In this study, we propose a selective solvation approach combining glyme and hydrofluoroether solvents. The selective solvation of Mg2+ by the glyme solvent component increases the oxidative stability of glyme while maintaining sufficient reductive stability of the non-coordinating hydrofluoroether. This approach enables the design of electrolytes with greater oxidative stability than glyme-only electrolytes while retaining enough reductive stability to cycle Mg metal. We also investigate the influence of various coordination interactions among the solvents and anions with Mg2+ on their electrochemical stabilities to better inform the design of future electrolytes.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shuanghui Zeng, Xue Wang, Yunqian Zhang, Jiaojing Shao, Zhao Ding, Jie Zhao
Summary: A free-standing 3D core/shell composite material CNTs@Co9S8 on nickel mesh has been prepared using a simple two-step method. The composite material exhibits excellent conductivity and charge storage capability, making it a promising candidate for supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Marieta Belcheva, Georgi Georgiev, Boyko Tsyntsarski, Urszula Szeluga, Lyudmila Kabaivanova
Summary: This study successfully prepared new antibacterial materials by combining activated carbon with metal nanoparticles, taking advantage of the well-known antibacterial activity of metal nanoparticles. The obtained composites exhibited strong antibacterial effects against E. coli and S. aureus, with the antibacterial activity depending on the contact time, bacterial species, nature of the metal, and metal concentration. The findings provide novel materials with antibacterial properties for further development and potential application in hygiene devices.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. P. Madhurima, Kusum Kumari, P. K. Jain
Summary: In this study, carbon nanomaterials were synthesized using the arc discharge technique, with a focus on optimizing process parameters to improve yield and quality. The materials were characterized using various analytical tools, and their dye adsorption capabilities were evaluated. The results showed that carbon soot had better adsorption performance compared to carbon nanotubes, indicating the potential of these carbon nanomaterials for environmental remediation applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaolong Sun, Bo Cui, Pingping Liang, Qimeng Liu, Nan Gao, Hongdong Li
Summary: This study explores the potential of hafnium (Hf) terminated diamond surfaces in achieving negative electron affinity (NEA). By using swarm-intelligence structural search and first-principles calculations, the researchers found that Hf-terminated diamond surfaces exhibit stable NEA properties and high thermal stability, making them promising candidate materials for electron emission applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
N. Soltani, N. Tavakkoli, E. Eslami, L. S. Mirmohammadi
Summary: In this project, a carbon paste electrode modified with graphene and ZnFe2O4 spinel nanoparticles (Gr/ZnFe2O4/CPE) was used to measure naproxen, and various electrochemical methods were used to investigate its behavior. By optimizing the parameters, good measurement results were obtained.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xiwei Cui, Yue Qin, Xin Han, Huanyi Chen, Xinxin Ruan, Hui Zhang, Chengcheng Jiao, Rongqi Mao, Jinglin Hao, Sizhuang Zhao, Shuai Hou, Xiaoxuan Pian, Yandong Wang, Kazuhito Nishimura, Lifen Deng, Nan Jiang
Summary: This paper investigates the friction and wear behaviors of two types of polycrystalline diamonds against different materials. The results show that increasing surface roughness leads to an increase in coefficient of friction. The coefficient of friction and wear rate of ceramic Si3N4 balls are generally lower than those of steel GCr15 balls, except for one type of polycrystalline diamond. Transfer films of SiO2 and its hydrate are observed at the friction interface, which contribute to smoother friction and wear. Carbon-based transfer films are also identified, mainly catalyzed by residual cobalt in the polycrystalline diamonds, leading to a phase transformation.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Menglei Sun, Pengjun Li, Mao Wang, Yidan Liang, Xudong Yang, Shujie Pang
Summary: In this study, carbonized polymer dots were synthesized by a one-step hydrothermal method, and silver nanoclusters were synthesized by UV lamp irradiation. They were then self-assembled by electrostatic force to prepare a dual-emission fluorescent nanocomposite that responds to temperature changes. The nanocomposite showed two emission peaks and exhibited excellent linearity between 20°C and 80°C.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Mohamed J. Saadh, Durgesh Singh, Diego Mayorga, Anjan Kumar, Maria Albuja, Ahmad Ismael Saber, Mohammed Ahmed Mustafa, Yasser Elmasry, Noubu Sun
Summary: Based on density functional theory, it is found that the C3N monolayer has good adsorption capability for Hg0 and a short recovery time. This study suggests that the C3N monolayer is a promising adsorbent material for efficient control of gaseous mercury.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Rajendra Kumar Nare, Sivalingam Ramesh, Vijay Kakani, Yuvaraj Haldorai, Chandrasekaran Karthikeyan, Basivi Praveen Kumar, Nadavala Siva Kumar, Mohammad Asif, S. Naresh Kumar, D. Prakash Babu, K. Ramakrishna Reddy, Visweswara Rao Pasupuleti
Summary: This study examines the latest advancements in carbon nanotube (CNT) supercapacitors and related composites, aiming to identify strategies for enhancing their performance. The researchers used ultrasonication aided hydrothermal technique to synthesize a composite made of nitrogen doped carbon nanotubes and porous NiCo2O4 nanomaterial. The composite electrode exhibited excellent cycling stability and a rising specific capacitance, making it appealing for high-performance supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
D. Mary Deena, S. Arockia Anushya, A. Dhanusha, T. C. Sabari Girisun, A. Philominal
Summary: A single-beam Z-Scan experiment was conducted to investigate the nonlinear optical absorption and optical limiting properties of Bi2O3, rGO/Bi2O3, Bi2O3/WO3, and rGO/Bi2O3/WO3 nanostructures. The results showed that the synthesized nanostructures exhibited varying levels of nonlinear absorption, with bismuth-based nanostructures showing the lowest optical limiting threshold and a higher two-photon absorption coefficient. The presence of rGO contributed to the extended conjugation for charge transfer, while the strong UV-Visible absorption of Bi2O3 and WO3 led to a unique nonlinear optical response.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Weibing Guo, Yiren Hu, Tao Wang, Xiaoguang Chen
Summary: This study investigated the microstructure and forming mechanism of graphite/copper joints that were brazed using Ti-containing filler. The results showed that increasing the brazing temperature improved the heat transfer and tensile properties of the composites. Additionally, the composites exhibited high heat flux and faster heating rate compared to copper and aluminum.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ming Li, ZhiWen Wang, Yu Teng, Hongyu Zhao, Bowei Li, Yang Liu, Shengxue Wang, Zhenze Yang, Liangchao Chen, Hongan Ma, Xiaopeng Jia
Summary: In the experiment, different Ni-content catalysts were used to synthesize diamond crystals, and the properties of the synthesized diamonds were analyzed. The results revealed that the Ni content in the catalyst affects the crystallinity of diamond crystals and the nitrogen crystallinity. The photoluminescence spectroscopy also showed that the diamond synthesized by using Fe-containing catalyst has specific NV-color center structure.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ling-Feng Mao
Summary: This study proposes an LSTM model to predict the work function of adsorbed metal atoms on graphene, which can quickly screen surface structures with target work function, saving computing and time costs, and improving device performance.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Runzhou Xu, Yinshui Liu, Qian Cheng, Zhenyao Wang, Kai Ma, Peiling Ke, Yipan Deng
Summary: The wear resistance of 17-4PH stainless steel was significantly improved by depositing multi-layered Cr/CrC/DLC coating at wide temperature range. The coating exhibited excellent lubrication and protective properties, and the wear mechanism changed with increasing temperature. The tribochemical reaction during the wear process played a crucial role in the graphitization transformation and friction properties of the coating.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xilong Guo, Jiaxin Song, Shanling Wang, Li Lei, Omololu Odunmbaku, Ayoub Taallah, Yi He, Aiqun Gu, Filippo S. Boi
Summary: The recent observations of superconductive-ordering in carbon-based systems consisting of rhombohedral stacking-faults, trilayer graphene (ABC-stacks) or dislocation-rich interfaces (pyrolytic graphite) have attracted significant attention. In this study, an unusual nucleation of rhombohedral stacking-faults in low-dimensional systems comprising of multiwall carbon nanotube (CNT) buckypapers was reported. The presence of sulfur doping resulted in a broad-band at the Raman shift from 1800 to 2000 cm(-1), indicating contributions arising from disorder-rich regions with rhombohedral stacking-order (ABC-stacks). These observations were further supported by X-ray diffraction and Rietveld refinements.
DIAMOND AND RELATED MATERIALS
(2024)