Article
Chemistry, Physical
Iwona Plowas-Korus, Richard Buchner
Summary: An extensive dielectric relaxation study was conducted on aqueous xylitol solutions, revealing weak hydration of xylitol and formation of aggregates due to the lack of separating bulk water. The aggregation of xylitol molecules is driven by rising temperature and results in the formation of larger fluctuating entities.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Jungyu Kim, Bonhyeop Koo, Joonhyung Lim, Jonggu Jeon, Chaiho Lim, Hochun Lee, Kyungwon Kwak, Minhaeng Cho
Summary: This study investigated the solvation structure and Li-ion transport mechanism in superconcentrated aqueous electrolytes using various techniques. The results showed that even at extremely high salt concentrations, water molecules exhibit properties similar to bulk water, and the electrolytes have a heterogeneous solvation environment that facilitates fast Li-ion transport. The findings suggest potential for designing solvation structures to improve the performance of dilute LIB electrolytes.
ACS ENERGY LETTERS
(2022)
Article
Biochemistry & Molecular Biology
Suad Alwaleedy, Saeed Mohemmed, Ravi Karale, Komal Kabara, Ashok Kumbharkhane, Bunty Roy, Arvind Sarode
Summary: The dielectric relaxation of aqueous alanine was studied to investigate the hydrophobic behavior at low temperatures and concentrations, revealing that alanine exhibits more hydrophobicity towards such conditions. Molecular interactions between alanine and water were also explored through dielectric parameters, supporting the thermodynamic parameters calculated for the hydrophobic behavior of alanine at low temperatures and concentrations.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2022)
Article
Chemistry, Physical
Richard Buchner, Glenn Hefter
Summary: The aqueous solutions of zinc sulfate were studied using dielectric relaxation spectroscopy at 25 degrees C. The results showed the presence of four Debye processes, two solvent-related modes at higher frequencies, and two solute-related modes at lower frequencies. The effective hydration numbers of ions and ion pairs decreased with increasing concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Susanne Liese, Alexander Schlaich, Roland R. Netz
Summary: The dielectric constant of water/oligomer mixtures was investigated using molecular dynamics simulations. The results show that the dielectric constant decreases as the water content decreases, but does not follow ideal mixing behavior. This deviation is primarily due to the non-linear relationship between the oligomer mass fraction and collective polarization effects. The study also found that water polarization dominates the dielectric constant, even when the oligomer mass fraction exceeds 50%.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Rui Shi, Anthony J. Cooper, Hajime Tanaka
Summary: The behaviour of ions solvated in water is highly ion-specific and can be explained by considering the interplay between ion-water and inter-water interactions as well as the bond-orientational order of the hydration shell. This study provides insight into the ion-specific effects observed in salt solutions and their impact on solution dynamics. The findings have fundamental implications for ionic processes in aqueous solutions, offering a physical principle for electrolyte design and application.
NATURE COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Suad Alwaleedy, Ravikant R. Karale, Komal B. Kabara, Savita Kamble, Saeed Al Hamdani, Ashok C. Kumbharkhane, Arvind V. Sarode
Summary: This study investigates the interaction between water and the amino acid lysine in order to understand the physicochemical properties that contribute to protein structure formation. The research reveals the presence of two distinct relaxation modes in aqueous lysine and provides detailed analysis of key dielectric and thermodynamic parameters. The findings shed light on molecular interactions, hydrogen bonding, hydrophobicity, and Lys-Lys binding.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Article
Chemistry, Physical
Kang Hu, Ryo Shirakashi
Summary: In this study, we investigated the relationship between water rotational dynamics and the exerted internal electric field using molecular dynamics simulation. We found that the rotation of water molecules synchronizes with the reorientation of the overall electric field. Furthermore, the rotational dynamics are influenced by the reorientation of the local electric field within the hydration layer.
Article
Chemistry, Physical
Ravikant R. Karale, Komal B. Kabara, Suad Alwaleedy, Saeed Mohammed Al-Hamdani, Savita Kamble, Pallavi Narwade, Bapurao D. Watode, Ashok C. Kumbharkhane, Arvind V. Sarode
Summary: The dielectric properties of aqueous PVP in the presence of IBP were investigated using time domain reflectometry. Two relaxation processes were observed, namely low frequency relaxation and high frequency relaxation.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Biochemistry & Molecular Biology
D. G. Rathod, D. N. Rander, K. S. Kanse, Y. S. Joshi, A. C. Kumbharkhane
Summary: Time domain reflectometry (TDR) technique is extensively utilized for studying dielectric relaxation and solution properties of carbohydrates. This study obtained complex permittivity spectra of monosaccharides and disaccharides using TDR technique, which can be helpful in pharmaceutical, food processing industry and solubility prediction in aqueous solution. The data also provided insights into the relaxation behavior of aqueous solutions of monosaccharides and disaccharides.
CARBOHYDRATE RESEARCH
(2021)
Article
Multidisciplinary Sciences
Liwen Jiang, Ke Zhang, Yixin Yao, Shuai Li, Jiao Li, Zhen Tian, Weili Zhang
Summary: This article introduces a new method for analyzing aqueous salt solutions using terahertz optoacoustics. The method manipulates terahertz optoacoustic signals through temperature control to reduce water background and provide more solute information. The results demonstrate the significant potential of this method for distinguishing different salt solutions and quantitatively analyzing salt concentrations.
Article
Biochemistry & Molecular Biology
Maria Teresa Caccamo, Salvatore Magazu
Summary: In this study, infrared spectroscopy measurements were conducted on Lysozyme aqueous solutions in the presence of PolyEthylene Glycol (PEG 400) at different temperatures. The results showed the bioprotectant effectiveness of low molecular weight PEG and highlighted its role in thermal treatment.
Article
Biochemistry & Molecular Biology
Nikolay S. Chirkov, Shi-Yow Lin, Alexander Michailov, Reinhard Miller, Boris A. Noskov
Summary: The interactions between DNA and lysozyme in the surface layer were studied using various experimental methods. Unlike the case with a monolayer of cationic synthetic polyelectrolyte, no continuous network of DNA/lysozyme complexes was formed. The weaker interactions between lysozyme and DNA led to the formation of more disordered aggregates at high lysozyme concentrations in the surface layer.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
A. K. Lyashchenko, I. Balakaeva, N. A. Smirnova, E. A. Safonova
Summary: The microwave dielectric properties of aqueous solutions of 2,2-dimethyl-1,3-dioxolane were measured at temperatures of 288, 298, 308 K and frequencies ranging from 5-25 GHz. Static dielectric constants, activation parameters, and relaxation times were calculated, with consideration given to the impact of nonpolar groups on water.
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Physical
Na Li, Ying Wang, Leping Dang, Bo Zhang, Zhanzhong Wang
Summary: In this study, the effects of four hydrophilic ionic liquids (ILs) on lysozyme activity and molecular interaction in aqueous solutions were investigated. The results showed that the effect of ILs on lysozyme activity depended on their concentration. ILs exhibited a quenching effect on the fluorescence of lysozyme, and this effect increased with increasing ILs concentration. The conformational changes of lysozyme triggered by changes in the microenvironment surrounding Trp62 or Trp108 were found to be responsible for the effects of ILs on lysozyme activity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biophysics
I. Venditti, T. F. Hassanein, I. Fratoddi, L. Fontana, C. Battocchio, F. Rinaldi, M. Carafa, C. Marianecci, M. Diociaiuti, E. Agostinelli, C. Cametti, M. V. Russo
COLLOIDS AND SURFACES B-BIOINTERFACES
(2015)
Review
Chemistry, Physical
Ilaria Fratoddi, Iole Venditti, Cesare Cametti, Maria Vittoria Russo
Review
Chemistry, Analytical
Ilaria Fratoddi, Iole Venditti, Cesare Cametti, Maria Vittoria Russo
SENSORS AND ACTUATORS B-CHEMICAL
(2015)
Review
Toxicology
Ilaria Fratoddi, Iole Venditti, Cesare Cametti, Maria Vittoria Russo
TOXICOLOGY RESEARCH
(2015)
Article
Physics, Multidisciplinary
Michele Caputo, Cesare Cametti
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2016)
Article
Chemistry, Analytical
I. Fratoddi, A. Bearzotti, I. Venditti, C. Cametti, M. V. Russo
SENSORS AND ACTUATORS B-CHEMICAL
(2016)
Article
Biochemistry & Molecular Biology
A. Di Biasio, L. Ambrosone, C. Cametti
BIOELECTROCHEMISTRY
(2014)
Article
Chemistry, Applied
Serena De Santis, Marco Diociaiuti, Cesare Cametti, Giancarlo Masci
CARBOHYDRATE POLYMERS
(2014)
Article
Chemistry, Physical
Iole Venditti, Laura Fontana, Ilaria Fratoddi, Chiara Battocchio, Cesare Cametti, Simona Sennato, Francesco Mura, Fabio Sciubba, Maurizio Delfini, Maria Vittoria Russo
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2014)
Article
Chemistry, Physical
C. Cametti, S. Marchetti, G. Onori
JOURNAL OF PHYSICAL CHEMISTRY B
(2013)
Article
Physics, Applied
A. Di Biasio, L. Ambrosone, C. Cametti
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2013)
Review
Polymer Science
Cesare Cametti
Article
Materials Science, Biomaterials
I. Fratoddi, I. Venditti, C. Cametti, M. V. Russo
JOURNAL OF MATERIALS CHEMISTRY B
(2014)
Proceedings Paper
Computer Science, Theory & Methods
Michele Caputo, Cesare Cametti
2014 IEEE/ASME 10TH INTERNATIONAL CONFERENCE ON MECHATRONIC AND EMBEDDED SYSTEMS AND APPLICATIONS (MESA 2014)
(2014)
Article
Polymer Science
Marco Palombo, Andrea Barbetta, Cesare Cametti, Gabriele Favero, Silvia Capuani
Summary: Using diffusion NMR, it is possible to quantify subdiffusion and measure the fractal dimension of systems characterized by micro and sub-micro geometrical structures. This method is important for studying highly heterogeneous nanostructured and complex functional materials.