Article
Chemistry, Multidisciplinary
Jose Diego Fernandes, Wallance Moreira Pazin, Wagner Costa Macedo, Gilia Cristine Marques Ruiz, Carlos Jose Leopoldo Constantino
Summary: The optical and electrical properties of organic thin films devices depend on their supramolecular arrangement and molecular chemical structure. Research conducted using the Langmuir-Schaefer (LS) technique showed that films produced from perylene derivatives exhibited different supramolecular arrangements and optical properties due to differences in their chemical structures.
Article
Chemistry, Multidisciplinary
Bailei Li, Jiren Xu, Ruixue Ai, Haixing Zhang, Mingjun Wei, Rongqing Zhang, Chunling Bao, Wenhui Wu
Summary: This study presents a novel therapy for dentin hypersensitivity (DH) based on beta-chitooligosaccharide graft derivative (CAD) that demonstrates remarkable biosafety and durable therapeutic value. CAD restores the protective membrane in dentine tubules, promotes mineral deposition and bone anabolism, and regulates immunoglobulin levels and inflammatory factors. In vitro tests show that CAD occludes exposed dentine tubules with a depth of over 70 μm. In a study on Sprague-Dawley rats, the CAD group exhibits a 10.96% increase in molar dentin bone mineral density and an improvement in trabecular thickness of about 0.03 μm within 2 weeks. Overall, this research demonstrates the potential of modified marine biomaterials as safe and long-lasting therapy for DH.
Article
Chemistry, Organic
Yuan Chen, Baobao Sun, Ranran Wang, Conghao Shi, Ming Cheng, Juli Jiang, Chen Lin, Leyong Wang
Summary: In an aqueous solution, L-CySS-OMe induced pS-WP5 from racemic WP5. By adding different reducing and oxidizing reagents, the chiral conformational transferring process between pR-WP5 and pS-WP5 was observed, which can be visually observed through CD signal.
Article
Mathematics, Applied
Guanli Xiao, Michal Feckan, JinRong Wang
Summary: In this paper, we investigate the averaging principle for Caputo-type fractional stochastic differential equations driven by Brownian motion. By using Holder inequality and growth conditions, we show the desired averaging principle in the sense of mean square and provide a simulation example to verify the theoretical results.
Article
Nanoscience & Nanotechnology
Penghua Qin, Zhen Wu, Pengyu Li, Dian Niu, Minghua Liu, Meizhen Yin
Summary: The study focuses on constructing chiroptical materials with controllable chirality by co-assembling chiral alanine derivative and fluorescent cyanostilbene derivative to prepare supramolecular chiral systems. The research successfully demonstrates the modulation of supramolecular chirality and circularly polarized luminescence by altering cooling rate and incorporating metal ions, with a mechanism involving synergistic effects among different interactions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Jae-Hyeon Park, Min-Hye Kim, Moo-Lyong Seo, Ji-Ha Lee, Jong-Hwa Jung
Summary: This study reports the in situ formation of supramolecular gels by mixing 1,3-cyclohexane diamine and isocyanate derivative in various organic solvents at room temperature. The formed gels exhibit stable structures, thermal reversibility, and enhanced viscoelastic properties with increased concentration of the mixed compounds.
Article
Chemistry, Multidisciplinary
Conghui Wang, Ying-Ming Zhang, Haoran Li, Jin Zhang, Yu Zhou, Guoxing Liu, Xiufang Xu, Yu Liu
Summary: Conformational regulation is not only a main pathway for achieving multiple tasks in complex biological systems, but also a powerful strategy for obtaining stimuli-responsive supramolecular nanoconstructs with tailored physicochemical performance. This study demonstrates that synergistic conformational modulation through intra- and intermolecular interactions can be developed as a generalizable approach to construct more advanced biomimetic nanomaterials.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Organic
Sonia Sharma, Manoj Kumar, Vandana Bhalla
Summary: This study demonstrates the synthesis of a pyrazine derivative PYZ-TA as a supramolecular host for immobilizing co-released Pd nanoparticles derived from Pd(II) catalyst in Suzuki coupling reactions. The obtained PYZ-TA@Pd catalyst exhibits high self-assembly ability in both solid and liquid state, and shows high catalytic activity and recyclability in Suzuki-Miyaura coupling reactions with excellent yields. This provides an efficient strategy to develop an easy to synthesize palladium centered solid catalyst through coordination between organic host and Pd nanoparticles.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Mathematics, Interdisciplinary Applications
Ferrag Azouz, Djalal Boucenna, Abdellatif Ben Makhlouf, Lassaad Mchiri, Abbes Benchaabane
Summary: The paper investigates the controllability of differential systems with the general conformable derivative, presenting sufficient and necessary conditions for a linear general conformable system to be null completely controllable. It provides a full generalization to the general conformable fractional-order system case. Additionally, Krasnoselskii's fixed point theorem is applied to obtain a complete controllability result for a semilinear general conformable system.
Article
Chemistry, Multidisciplinary
Naoki Kubo, Mitsuaki Yamauchi, Seiya Yamamoto, Sadahiro Masuo
Summary: The study discovered that highly ordered QD arrangements can be formed by introducing pi-conjugated molecules with self-assembly ability into small CdSe QDs. In apolar solvents, large-sized CdSe QDs and azobenzene derivative 1 with an amino group can undergo in-depth coaggregation, forming linearly arranged QD structures.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Mathematics, Applied
Sevdzhan Hakkaev, Milena Stanislavova, Atanas Stefanov
Summary: This paper examines the stability of periodic cubic derivative nonlinear Schrodinger equation and (focussing) quintic nonlinear Schrodinger equation with respect to co-periodic perturbations. By analyzing detailed spectral analysis, the paper provides criteria for stability and identifies a parameter space region that produces spectrally stable waves. Additionally, a description of the stability of all bell-shaped traveling waves is provided for the quintic NLS, showing a two-parameter subfamily of waves compared to DNLS.
JOURNAL OF NONLINEAR SCIENCE
(2021)
Article
Automation & Control Systems
Hugo Lhachemi, Robert Shorten
Summary: The stability of retarded differential equations is closely related to the existence of Lyapunov-Krasovskii functionals, but there is a lack of constructive methods for their selection. For certain classes of time-delay systems, Lyapunov-Krasovskii functionals that depend on the time-derivative of the state-trajectory have been shown to be efficient tools for studying stability properties. The main objective of the article is to extend the stability results to initial conditions that are only assumed continuous and evaluated in uniform norm for certain classes of time-delay systems.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2021)
Article
Nanoscience & Nanotechnology
Jie Yu, Hui Wang, Xianyin Dai, Yong Chen, Yu Liu
Summary: A multivalent supramolecular aggregate with near-infrared fluorescence emission was developed and successfully applied for lysosome targeted imaging.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Mathematics, Interdisciplinary Applications
Ravshan Ashurov, Rajapboy Saparbayev
Summary: The Cauchy problem for the telegraph equation with the Caputo derivative and a selfadjoint positive operator is considered. Conditions are found for the existence and uniqueness of the solution. These conditions are less restrictive than expected, as shown in a previous study. Stability estimates important for application are also proven.
FRACTAL AND FRACTIONAL
(2023)
Article
Mathematics, Interdisciplinary Applications
Mengrui Xu
Summary: This paper studies the dynamic behavior of a class of fractional-order antisymmetric Lotka-Volterra systems. The effects of the order of derivative on boundedness and stability are analyzed separately for first-order and 0<1-order antisymmetric Lotka-Volterra systems. It is shown that the order does not affect boundedness but does affect stability. All solutions of the first-order system are periodic, while the 0<1-order system has no non-trivial periodic solution. Furthermore, the 0<1-order system can be reduced on a two-dimensional space and the reduced system is asymptotically stable, regardless of how close to zero the order of the derivative used is. Numerical simulations are presented to verify the theoretical analysis.
FRACTAL AND FRACTIONAL
(2023)
Article
Environmental Sciences
Neda Amanat, Berardino Barbati, Marta M. Rossi, Marco Bellagamba, Marco Buccolini, Luciano Galantini, Marco Petrangeli Papini
Summary: This study investigated the abilities of sugar-based synthetic surfactants and biosurfactants to dissolve and mobilize non-aqueous phase liquid components adsorbed on porous matrices. The results show that a synthetic surfactant from the APG family with a long fatty acid chain and a di-rhamnolipid biosurfactant with a shorter hydrophobic group offered the highest efficiency values.
Article
Nanoscience & Nanotechnology
Sara Battista, Mariana Koeber, Pierangelo Bellio, Giuseppe Celenza, Luciano Galantini, Guillem Vargas-Nadal, Lorenza Fagnani, Jaume Veciana, Nora Ventosa, Luisa Giansanti
Summary: The newly developed nanovesicle system of the quatsome family shows noticeable antibacterial activity, demonstrating great potential for the treatment of bacterial infections and can also serve as nanocarriers of pharmaceutical actives.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biochemical Research Methods
Roberto Marotta, Alessandra Del Giudice, Libero Gurrieri, Silvia Fanti, Paolo Swuec, Luciano Galantini, Giuseppe Falini, Paolo Trost, Simona Fermani, Francesca Sparla
Summary: GAPDH is a key enzyme in the Calvin-Benson cycle and is regulated differently in land plants. This study reveals the structural basis of its regulation and the existence of different oligomeric states. The C-terminal extension of the B subunits plays a crucial role in inhibiting enzyme activity by preventing substrate binding. The whole mechanism is controlled by pyridine nucleotides.
ACTA CRYSTALLOGRAPHICA SECTION D-STRUCTURAL BIOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Davide Piccinino, Eliana Capecchi, Valentina Trifero, Elisabetta Tomaino, Claudia Marconi, Alessandra Del Giudice, Luciano Galantini, Stefano Poponi, Alessandro Ruggieri, Raffaele Saladino
Summary: In this study, lignin nanoparticles were used as sustainable carriers and photostabilizers for common UV chemical filters. The stability of the compounds was significantly improved by encapsulation, and further enhanced by coencapsulation with hydroxytyrosol.
Article
Chemistry, Multidisciplinary
Liangchen Zhang, Yaxun Fan, Luciano Galantini, Karin Schillen, Alessandra Del Giudice, Guanqun Du, Yilin Wang
Summary: A class of noncovalent antimicrobials composed of bile acid oligomers and polyamines has been developed, showing strong antibacterial activity against methicillinand vancomycin-resistant Staphylococcus aureus without significant cytotoxicity and skin irritation.
Article
Chemistry, Analytical
Cristina Tortolini, Valeria Gigli, Antonio Angeloni, Luciano Galantini, Federico Tasca, Riccarda Antiochia
Summary: In this work, a simple electrochemical immunosensor was developed for the detection of D-dimer protein in human plasma samples. The immunosensor was constructed by drop-casting chitosan nanoparticles (CSNPs) as a biocompatible support, Protein A (PrA) to facilitate antibody orientation, and D-dimer antibody onto a carboxyl functionalized multi-walled carbon nanotubes screen printed electrode (MWCNTs-SPE). The immunosensor showed promising performance in antibody immobilization and specific D-dimer detection, with a linear range from 2 to 500 μg L-1, LOD of 0.6 μg L-1, and sensitivity of 1.3 μA L μg(-1) cm(-2). The stability and fast response time (5 s) were also reported. Moreover, the immunosensor demonstrated satisfactory results in detecting D-dimer in human plasma samples.
Article
Biochemistry & Molecular Biology
Alessandra Del Giudice, Libero Gurrieri, Luciano Galantini, Silvia Fanti, Paolo Trost, Francesca Sparla, Simona Fermani
Summary: CP12 is a redox-dependent conditionally disordered protein found in oxygenic photosynthetic organisms. It acts as a light-dependent redox switch in regulating the metabolic phase of photosynthesis. A small angle X-ray scattering analysis confirmed the disordered nature of this protein and showed a decrease in size and conformational disorder upon oxidation. The presence of disulfide bonds in the oxidized form does not confer rigidity to the protein structure, highlighting the importance of recruiting partner proteins for its final folding.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agriculture, Multidisciplinary
Julia Jianwei Tan, Natalie Gjerde, Alessandra Del Giudice, Kenneth D. Knudsen, Luciano Galantini, Guanqun Du, Karin Schillen, Sverre Arne Sande, Bo Nystrom
Summary: This study investigates the interactions between cationic hydroxyethyl cellulose (catHEC) and sodium deoxycholate (NaDC) or sodium cholate (NaC). It is found that there are strong interactions between catHEC and NaDC, while the interactions with NaC are weak. This difference may be due to the ability of NaDC to form more connections and entanglements.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Guilherme A. Ferreira, Maor Ram-On, Yeshayahu Talmon, Karin Schillen, Lennart Piculell, Watson Loh
Summary: Aqueous dispersions of charged-neutral block copolymers complexed with an oppositely charged surfactant were prepared using different approaches. The dispersions prepared by the simple mixing of two solutions displayed nanometric spherical particles with disordered cores and poor colloidal stability. On the other hand, dispersions prepared from freeze-dried complex salt had anisometric particles that were large enough to sustain micellar cubic cores and showed long-time colloidal stability. The results highlight the importance of the preparation procedure in controlling the physicochemical properties of dispersed particles.
Review
Biochemistry & Molecular Biology
Iolanda Francolini, Luciano Galantini, Fernando Rea, Cristiano Di Cosimo, Pierpaolo Di Cosimo
Summary: Polymeric wet-strength agents are important additives used in the paper industry to improve paper products' mechanical properties when exposed to water. They enhance durability, strength, and dimensional stability. This review provides an overview of wet-strength agents, their mechanisms, challenges, and recent advances in developing sustainable and environmentally friendly agents. As demand for sustainable and durable paper products grows, the use of wet-strength agents is expected to increase.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Pharmacology & Pharmacy
Elena Allegritti, Sara Battista, Maria Anna Maggi, Claudia Marconi, Luciano Galantini, Luisa Giansanti
Summary: This study focuses on the preparation and characterization of mixed liposomes for delivering levodopa and two natural substances to treat Parkinson's disease. The results show that the composition of the liposomes plays a significant role in the delivery of levodopa.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Chemistry, Multidisciplinary
Natalie Solfrid Gjerde, Alessandra Del Giudice, Kaizheng Zhu, Kenneth D. Knudsen, Luciano Galantini, Karin Schillen, Bo Nystrom
Summary: In this study, a diblock copolymer called methoxy-poly(ethyleneglycol)-block-poly(epsilon-caprolactone) (MPEG-b-PCL) was synthesized with a unique block composition that allows it to exhibit both an upper critical solution temperature (UCST) and a lower critical solution temperature (LCST) in aqueous solutions. The UCST value was found to be 32°C upon heating and 23°C upon cooling, while the LCST remained unaffected. Various characterization techniques revealed that the solution consisted of spherical core-shell particles and rodlike objects at intermediate temperatures, cylindrical core-shell crystals at low temperatures, and large aggregation complexes at temperatures above 52°C. This work provides valuable insights into the complex interplay between UCST and LCST and the resulting structures formed in aqueous solutions of MPEG-b-PCL diblock copolymers.
