Article
Materials Science, Multidisciplinary
Luis Cruz, Juan Correa, Nuno Mateus, Victor de Freitas, Maun H. Tawara, Eduardo Fernandez-Megia
Summary: Anionic dendrimers serve as hosts for color stabilization of anthocyanin dyes, with the interaction mechanisms being modulated by the dye structure and concentration. The encapsulation ability of the dendrimer becomes dominant at higher concentrations, allowing for potential applications in pH-responsive systems like food smart packaging.
ACS APPLIED POLYMER MATERIALS
(2021)
Letter
Chemistry, Multidisciplinary
Ahmed Shaukat, Eduardo Anaya-Plaza, Ngong Kodiah Beyeh, Mauri A. A. Kostiainen
Summary: Our recent publication in Chem. Eur. J. 2022, 28, e202104341 has prompted Prof. Peter B. Crowley (P.C.) to question the concept of electrostatic self-assembly. We address the criticism regarding the role of cationic pillar[5]arene macrocycle and provide NMR evidence proving its incorporation into the frameworks. Additionally, we clarify the role of electrostatic interactions and discuss our ferritin-related research in greater detail.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Thomas J. P. Hersbach, Charlie Rabin
Summary: This study investigates the pH-dependent interactions between poly(amidoamine) dendrimers with different terminal groups and fluorescein. The results show that amine-terminated dendrimers have the strongest binding with fluorescein, followed by hydroxyl-terminated dendrimers, while carboxyl-terminated dendrimers do not interact attractively with fluorescein. These functionalization-dependent host-guest interactions are predominantly electrostatically driven, with auxiliary hydrogen and CH-pi bonding.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Multidisciplinary
Alvaro Garcia-Romero, Daniel Miguel, Dominic S. Wright, Celedonio M. Alvarez, Raul Garcia-Rodriguez
Summary: This paper explores the use of main group elements in supramolecular chemistry, specifically in supramolecular porphyrin-based capsules. By studying the periodic trends in the p-block, the authors demonstrate how size and structural control of the capsules can be achieved. The interaction between heavier Group 15 tris(3-pyridyl) linkers and metallo-porphyrins has been investigated, revealing the influence of bond length and oxidation state on the dimensions and reactivity of the capsules.
Article
Materials Science, Biomaterials
Thuy P. T. Nguyen, Fanyi Li, Brendan Hung, Vinh Xuan Truong, Helmut Thissen, John S. Forsythe, Jessica E. Frith
Summary: Microgels, microscale particles of hydrogel, are attracting increasing attention for tissue regeneration applications due to their ability to support cell-ECM and cell-cell interactions, as well as their high surface area-to-volume ratio facilitating nutrient and metabolite exchange. This article presents methods for fabricating and modifying microfluidic devices using common laboratory consumables, allowing for the production of microgels. The introduced pipet-based chip offers simplicity, tunability, and versatility, making it easy to assemble in most laboratories for the effective production of cell-laden microgels for tissue engineering applications.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Editorial Material
Computer Science, Artificial Intelligence
Lei Chen, Xiangmin Zhou, Xiaochun Yang, Timos Sellis
Summary: The rapid growth of online service platforms has changed the way users conduct daily activities, and recommendation has become a key method for understanding users and promoting services. Effective recommendation of online items is particularly important in e-commerce and online media. However, there are still many challenges in this field, such as context discovery, user behavior influence, and big data management, which require new solutions using AI and Big Data techniques.
IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING
(2023)
Article
Chemistry, Physical
Preeti Tiwari, Rafat Ali, Romana Ishrat, Najmul Arfin
Summary: This study focused on the interaction between zein and curcumin in 80% v/v ethanol solution at pH 4, revealing complex formation, fluorescence quenching mechanism, and strong hydrophobic interactions. The change in protein structure from alpha helix to beta sheet structure was confirmed through CD spectroscopy and SEM study, while molecular docking suggested the involvement of hydrophobic regions in the interaction.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Mechanics
Sebastian J. Richard, Bruce J. Balcom, Benedict Newling
Summary: We recently introduced a method using simple magnetic resonance techniques to determine the average velocity and flow behavior index of laminar pipe flow of a power-law fluid. This noninvasive method is capable of working on optically opaque fluids. The results of testing this method in monitoring the transition from laminar to turbulent flow show that visual inspection of the data can be sufficient to determine the flow state, and with some external knowledge of the flow rate, the shape of the time-averaged velocity profile and eddy diffusivity can be estimated.
Article
Mechanics
Jiangfeng Guo, Michael M. B. Ross, Benedict Newling, Maggie Lawrence, Bruce J. Balcom
Summary: This paper introduces a low-cost permanent magnet design for measuring laminar flow, proposes a series of MR measurement methods for characterizing fluid flow, validates their accuracy, and points out the advantages of simple hardware and measurement methods.
Article
Economics
Yanhui Jiang, Yun Hong
Summary: This study investigates the dynamic relations between China Central Television News (CCTV News) and investor sentiment in China using the wavelet method. The findings show significant correlations between CCTV News's economic focus/tone and investor sentiment at different time scales, and there is a long-term interdependence between the two. Additionally, the interaction between CCTV News and investor sentiment increases during turbulent periods.
Article
Multidisciplinary Sciences
Vaclav Brezina, Lenka Hanykova, Nadiia Velychkivska, Jonathan P. Hill, Jan Labuta
Summary: Nuclear magnetic resonance (NMR) lineshape analysis is a powerful tool for studying chemical kinetics. This article provides techniques for analyzing the relationship between experimentally observed spin kinetics and corresponding chemical kinetics. The advantages of using analytical solutions for lineshape analysis over numerical calculations are discussed. The article also discusses various aspects of exchange kinetics and introduces the concept of "reduced equivalent schemes" to simplify the analysis. Theoretical results are applied to the analysis of different systems in literature examples.
SCIENTIFIC REPORTS
(2022)
Article
Nanoscience & Nanotechnology
Liangwei Li, Xiaoling Wu, Yuxia Pang, Hongming Lou, Zhixian Li
Summary: This study presents an innovative strategy to encapsulate cytochrome c within covalent organic frameworks (COFs) using deep eutectic solvents (DESs) as reaction solvents. The resulting cytochrome c@COF composite exhibits remarkable preservation of enzymatic activity and exceptional resistance to organic solvents. The encapsulated cytochrome c also shows enhanced catalytic efficiency in a photoenzymatic cascade reaction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Yuliang Cai, Cheng Zhai, Xu Yu, Yong Sun, Jizhao Xu, Yangfeng Zheng, Yuzhou Cong, Yujie Li, Aikun Chen, Hexiang Xu, Shuai Wang, Xizhuo Wu
Summary: Water injection is an effective method to control dust disasters in coal mines, but the quantitative evaluation of water transport and wetting effect in coal is lacking. This paper conducts wetting experiments on coal samples with different rank and particle size using low-field nuclear magnetic resonance (LF-NMR) tests. The physicochemical properties of coal are analyzed, and quantitative relationships between these properties and contact angle, T2weighted average value (T2g), and peak area of adsorbed water (ATotal) are established, providing insights into the wetting process of water in coal samples.
Review
Engineering, Chemical
Preethi Jayaprakash, Audrey Maudhuit, Claire Gaiani, Stephane Desobry
Summary: This review compares three emerging techniques: electrospraying, nano spray drying, and electrostatic spray drying. These techniques utilize electrostatic forces to enhance particle encapsulation and stability, making them suitable for heat-sensitive and labile products. Electrospraying and nano-spray drying demonstrate higher encapsulation efficiency and stability.
JOURNAL OF FOOD ENGINEERING
(2023)
Article
Chemistry, Physical
Hen-Amit Morik, Patrick Schuenke, Leif Schroeder
Summary: A serious limitation of high resolution Xe-129 chemical exchange saturation transfer (CEST) NMR spectroscopy is the long acquisition time due to step-wise encoding of the chemical shift dimension. This study presents a method of optimized use of Xe-129 spin magnetization to enable the accelerated and simultaneous acquisition of CEST spectra from multiple samples or regions. The method is applied to investigate the host-guest system of CB7 and xenon with competing guests, revealing that the observed CEST signal is from a CB6 impurity and that CB7 itself does not produce a CEST signal.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.
