Article
Polymer Science
Sergey A. Milenin, Elizaveta V. Selezneva, Pavel A. Tikhonov, Viktor G. Vasil'ev, Alexander I. Buzin, Nikolay K. Balabaev, Andrey O. Kurbatov, Maxim V. Petoukhov, Eleonora V. Shtykova, Lev A. Feigin, Elena A. Tatarinova, Elena Yu. Kramarenko, Sergey N. Chvalun, Aziz M. Muzafarov
Summary: Carbosilane dendrimers of different generations were synthesized, with theoretical models and simulations confirming their monodispersity and almost spherical shape. Glass transition temperature was found to be independent of generation, but greatly affected by the chemical nature of terminal groups. The viscoelastic properties of high-generation dendrimers exhibited general trends with increasing generation, determined by the regular branching structure.
Article
Polymer Science
Reza Pashaei-Sarnaghi, Faezeh Najafi, Ameneh Taghavi-Kahagh, Mehdi Salami-Kalajahi, Hossein Roghani-Mamaqani
Summary: In this study, poly(amidoamine) dendrimer with ethylenediamine core up to the fourth generation was synthesized and conjugated to different amounts of 7-(carboxymethoxy)-4-methylcoumarin. Under UV light irradiation, the crosslinked dendrimer-coumarin samples showed smaller particle sizes compared to non-crosslinked samples, with release behavior being influenced by increasing coumarin moieties.
EUROPEAN POLYMER JOURNAL
(2021)
Review
Biochemistry & Molecular Biology
Yunqi Guo, Mingwu Shen, Xiangyang Shi
Summary: The design of intelligent hybrid nanoparticles combining diagnosis and therapy components is crucial in nanomedicine. PAMAM dendrimers and CDs, due to their unique advantages, can be constructed as perfect nanohybrids for various biomedical applications, particularly in cancer nanomedicine.
MACROMOLECULAR BIOSCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Kaiyan Wu, Bingxiang Wang, Ruyue Dou, Yiqun Zhang, Zhongxin Xue, Yongfeng Liu, Yuzhong Niu
Summary: A series of eco-friendly bioadsorbents were synthesized by decorating apple residue cellulose with different generation Schiff base functionalized PAMAM dendrimers. These bioadsorbents exhibit competitive adsorption capacity and remarkable selectivity for Hg(II) in the presence of other metal ions. They also show satisfactory adsorption performance in real water samples and can be regenerated for reuse. The adsorption mechanism involves the participation of functional groups OH, -CONH-, C-N, and N=C.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Dhruba P. Poudel, Richard T. Taylor
Summary: In this study, fluorescent polyurethane homodendrimers and Janus dendrimers were synthesized overcoming the challenges posed by the reactivity of isocyanates. By using a one-pot multicomponent Curtius reaction, polyurethane dendrons (G1-G3) were successfully synthesized. The alkyne periphery of the dendrons was modified using a copper catalyzed azide-alkyne click reaction (CuAAC) to form fluorescent dendrons. The mixture of two different functionalized dendrons with a difunctional core resulted in the formation of three dendrimers, including two homodendrimers and a Janus dendrimer, with the Janus dendrimer being the predominant product.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biophysics
Xiaowei Yang, Zhihui Kuang, Xinmin Yang, Xin Hu, Peng Luo, Qi Lai, Bin Zhang, Xiaoyong Zhang, Yen Wei
Summary: Osteoporosis is an age-related metabolic disease that causes bone pain and fragility fractures. This study developed a novel method to conjugate curcumin with poly(amidoamine) dendrimers using hexachlorocyclotriphosphazene as a linker, forming stable and uniform curcumin-loaded nanospheres. The nanoparticles showed excellent water dispersity and pH-responsive drug release, and demonstrated dual effects of inhibiting osteoclasts and promoting osteoblasts for the treatment of osteoporosis.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Chemistry, Applied
Xiaoyu Zhang, Keyu Feng, Peng Yin, Yuqi Pan, Yujie Liu, Fanglei Zeng, Ning Li, Gang Yi, Zhongwei Wang
Summary: A multiple dynamic crosslinking self-healing composite poly(siloxane-urethane) conductive elastomer (CPUSi) was successfully developed in this study, inspired by the Chinese traditional myth Nuwa Fuxi, which can achieve self-healing of surface scratches under multiple conditions and has excellent mechanical properties and total shear repair efficiency. The material has broad application prospects in sports monitoring, electronic skin, intelligent wear, brain-computer interface, and other fields.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Physical
Marzieh Golshan, Mehdi Salami-Kalajahi, Hossein Roghani-Mamaqani
Summary: This article focuses on the synthesis and characterization of fluorescence hybrid dendrimers using perylenediimide cores and calcozine red 6 G and coumarin end groups. The optical properties and cell uptake of the synthesized dendrimers are also investigated.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Biochemistry & Molecular Biology
Magdalena Szota, Katarzyna Reczynska-Kolman, Elzbieta Pamula, Olga Michel, Julita Kulbacka, Barbara Jachimska
Summary: Two generations of PAMAM dendrimers were studied as potential carriers for the anticancer drug 5-fluorouracil, with results showing that the protonation degree of starting components is crucial for complex formation. The system was able to attach a number of 5FU molecules per dendrimer molecule, and cytotoxicity tests demonstrated a significant decrease in cell viability for malignant cell lines when exposed to PAMAM-5FU complexes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Azar Ramezanpour, Kazem Karami, Mahshid Kharaziha, Parvaneh Bayat, Nasrin Jamshidian
Summary: In this study, a multicomponent nanocomposite consisting of graphene, MnFe2O4 nanoparticles, poly(amidoamine) dendrons, and folic acid was developed as a smart magnetic nanocomposite for cancer therapy. The nanocomposite exhibited high encapsulation efficiency and drug loading capacity, and the release behavior of the drug was pH and temperature dependent. In vitro cytotoxicity experiments demonstrated the inhibitory effect of the nanocomposite on MCF-7 cells.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Applied
Qing Chang, Tao Ma, Chao Liu, Jinliang Hu, Xiaohong Cheng
Summary: Two bent shaped isomers based on benzo[1,2-b:4,3-b']dithiophene-pyridine have been synthesized, and the position of N-atom on the pyridine unit has significant effects on their self-assembly behavior and photophysical properties. The isomer with N in the para position can form a columnar liquid crystalline phase and emit enhanced yellow light when doped with L-tartaric acid, making it a potential material for WLED and chemosensors for volatile acid-base vapors.
Article
Chemistry, Multidisciplinary
Johannes M. Scheiger, Maxi Hoffmann, Patricia Falkenstein, Zhenwu Wang, Mark Rutschmann, Valentin W. Scheiger, Alexander Grimm, Klara Urbschat, Tobias Sengpiel, Joerg Matysik, Manfred Wilhelm, Pavel A. Levkin, Patrick Theato
Summary: Inverse vulcanization is used to produce high sulfur content polymers, but control over polymer properties is not well established. In this study, the inverse vulcanization of norbornenylsilanes is reported, allowing for control over properties such as molecular weight, solubility, and glass transition temperature. Polycondensation in the melt with HCl as a catalyst and purification by precipitation leads to polymers with reduced low molar mass species.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Xiaoyu Zhang, Yuqing Zhang, Peiyao Li, Ruotong Wang, Binghao Ma, Fanglei Zeng, Qitu Zhang, Hongyan Dai, Ning Li
Summary: A UV curable room temperature repair bio-based poly(siloxane-urethane) coating (PUESi) was prepared by synthesizing prepolymer with bio-based polyol, modified silicone polyol, and isophorone diisocyanate, as well as using chain extender and capping agent. The coating exhibited excellent self-healing properties, hydrophobicity, and thermal stability, making it suitable for applications in antifouling, anticorrosion, building material protection, and automotive instruments.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Kamal Jouad, Svetlana V. Eliseeva, Guillaume Collet, Cyril Colas, David Da Silva, Marie-Aude Hiebel, Nabil El Brahmi, Mohamed Akssira, Stephane Petoud, Said El Kazzouli, Franck Suzenet
Summary: There is a high demand for versatile near-infrared (NIR) imaging agents suitable for non-invasive optical imaging in living organisms. This study presents the creation of a family of NIR-emitting macromolecules that take advantage of the unique structure of dendrimers. The results indicate that these macromolecules have potential applications in various biological environments.
Article
Biophysics
Ramadan Al-Shdefat, Mustafa M. Kadhim, Ahmed B. Mahdi, Holya A. Lafta, A. Kumar
Summary: Density functional theory calculations were used to study the association of PUR with amine-and acetyl-terminated PAMAM dendrimers. The electronic properties of dendrimers are sensitive to the presence of PUR molecule. Encapsulation of PUR molecule leads to a significant change in Gibbs free energy, and the drug molecule is easily released at low pH. Acetylation can improve the release pattern of drug molecule.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)