Article
Nanoscience & Nanotechnology
Farzaneh Radmanesh, Maria G. Elshof, Nieck E. Benes
Summary: The prepared hybrid polyphosphazene membranes exhibit high thermal stability and excellent molecular sieving behavior, with high permselectivities for gases such as hydrogen and methane. Compared to other polymer membranes, these membranes show great potential for use in high-temperature gas separation applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Composites
Xiaodan Li, Wei Huang, Yan Sui, Guanhui Wang, Lin Xiao, Dongxing Zhang
Summary: By adding different amounts of MA0735 into novolac cyanate ester resin, novolac cyanate ester-polyhedral oligomeric silsesquioxane (POSS, MA0735) copolymers were prepared and analyzed for their curing behaviors and properties. The polymer with 0.5% MA0735 showed optimal comprehensive properties, combining heat resistance and impact toughness.
COMPOSITES COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Mayu Nagao, Taihei Hayashi, Hiroaki Imoto, Kensuke Naka
Summary: Dumbbell-shaped polyhedral oligomeric silsesquioxane (POSS) derivatives with unsymmetrical structures exhibit hybrid properties in solubility and thermal behavior, showing potential to improve the thermal degradation performance of compounds.
Review
Polymer Science
Maria Nowacka, Anna Kowalewska
Summary: This review discusses self-healing materials containing polyhedral oligomeric silsesquioxanes (POSS) and their synthetic methods and functionalization. POSS can serve as crosslinking agents and enhance the dynamics of macromolecules in the polymer matrix. These unique properties make POSS-based self-healing systems interesting and versatile materials for various applications.
Article
Chemistry, Physical
Sruthy Balakrishnan, Terry D. Humphries, Mark Paskevicius, Craig E. Buckley
Summary: Calcium hydride has shown potential as a hydrogen storage and thermochemical energy storage material, but its high operating temperature has limited its application and research on its hydrogen sorption thermodynamics. This study provides experimental data on the thermodynamic properties and activation energy of CaH2 in both solid and molten states, filling the gap in the thermodynamics of the Ca-H system for the first time in over 60 years.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Biochemistry & Molecular Biology
Yang-Chin Kao, Wei-Cheng Chen, Ahmed F. M. EL-Mahdy, Meei-Yu Hsu, Chih-Hao Lin, Shiao-Wei Kuo
Summary: In this study, a difunctionalized cyanate ester double-decker silsesquioxane (DDSQ-OCN) cage was prepared to improve the thermal behavior of epoxy resin. The covalently bonded network structure formed by the copolymerization of epoxy and OCN units, as well as the hydrogen bonding between the OH groups of epoxy and the SiOSi moieties of DDSQ units, enhanced the physical properties of the material. The addition of Cu(II)-acac accelerated the thermal polymerization process but decreased the thermal stability.
Article
Materials Science, Multidisciplinary
Joon Hyuk Lee, Eunkyung Jeon, Jung-kun Song, Yujin Son, Jaeho Choi
Summary: This study used the Kissinger equation to calculate the activation energy of phthalonitrile and observe its thermal properties. The results showed a positive correlation between the concentration of the curing agent and the thermal stability of the samples. The activation energy values obtained from the Kissinger equation also showed a positive correlation with the curing agent concentration.
HIGH TEMPERATURE MATERIALS AND PROCESSES
(2023)
Article
Chemistry, Multidisciplinary
Jake R. Jagannathan, Karina Targos, Annaliese K. Franz
Summary: Carbene insertion into Si-H bonds of polyhedral oligomeric silsesquioxanes (POSS) using dirhodium(II) carboxylates as catalysts allows for the synthesis of highly functionalized siloxane nanomaterials. This method results in the production of 20 new POSS compounds with diverse structures, containing both ester and aryl groups for further derivatization. The transformations of aryl(ester)-functionalized POSS compounds, including ester hydrolysis and Suzuki-Miyaura cross-coupling, demonstrate the versatility and potential applications of these highly functionalized substrates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
Bo Pang, Yuan Liu, Rong Cao, Wangqing Zhang
Summary: Organic-inorganic hybrid vesicles of POSS-(PNIPAM-b-PS)(8) were synthesized and exhibited good thermal stability and high mechanical strength, maintaining structural integrity in the dried state. These vesicles can be used as thermal insulation materials with low thermal conductivity.
ACS APPLIED NANO MATERIALS
(2022)
Article
Polymer Science
Aneta Lewandowska, Piotr Gajewski, Katarzyna Szczesniak, Mariola Sadej, Piotr Patelski, Agnieszka Marcinkowska
Summary: POSS significantly influences the synthesis and properties of hybrid organic-inorganic ionogels, with modified thiol-ene matrix resulting in non-leaking ionogels with improved properties. Steric hindrance and high-density network formation of POSS play important roles in ionogel synthesis, leading to enhanced mechanical and conductive properties.
Article
Chemistry, Multidisciplinary
Mathilde Laird, Niklas Herrmann, Naseem Ramsahye, Cedric Totee, Carole Carcel, Masafumi Unno, John R. Bartlett, Michel Wong Chi Man
Summary: This study reports an unprecedented, single isomer styryl-functionalized T-18 POSS, which has been unambiguously identified among nine possible isomers using multinuclear solution NMR, MALDI-MS, FTIR, and computational studies. A ring-strain model was developed to predict the speciation of non-equivalent Si atoms in other T-n compounds, demonstrating its general applicability and usefulness for predicting Si-atom environments.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Vijayakumari Sugumaran, Annamalai Kamalakkannan, Balakumar Subramanian
Summary: Sintering-induced crystallization plays a crucial role in biomaterial application, and the role of sodium cations in the bioactive glass network remains a subject of curiosity and debate. In this study, the kinetic behavior of bioactive glasses with and without sodium cations was investigated using TG-DTA analysis under non-isothermal conditions. The results showed that the traditional 45S BG follows a power law, while the sodium-free BG follows third-order and diffusion-reaction models with a lower pre-exponential factor. The study also calculated the activation energy and thermodynamic parameters, providing valuable insights for designing biomaterials with erythrocyte and tissue compatibility for biomedical applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Haixiang Song, Qiqi Zhang, Yanwei Zhang, Yanfei Wang, Zhongyuan Zhou, Ping Zhang, Bingnan Yuan
Summary: The influence of 3-amino-polyhedral oligomeric silsesquioxane (NH2-POSS) on waterborne polyurethanes (WPU) was studied by synthesizing NH2-POSS modified WPUs. The addition of NH2-POSS improved the dispersion stability and thermal stability of WPU, while also enhancing hydrophobic properties.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yanhong Fang, Ping Wang, Lifang Sun, Linhong Wang
Summary: This paper details the successful preparation of hydrophobic epoxy caged sesquioxane (EP-POSS) and its application potential in solar panels, demonstrating its excellent properties through various tests and analyses.
Article
Chemistry, Multidisciplinary
Yoshiro Kaneko
Summary: This paper presents the recent research of the author on the synthesis and characterization of thermally stable ionic liquids (ILs) with siloxane frameworks. Quaternary ammonium and imidazolium salt-type ILs with random oligosilsesquioxane frameworks were successfully prepared using a superacid catalyst and solvent. Moreover, imidazolium salt-type ILs with polyhedral oligomeric silsesquioxane (POSS) frameworks and amorphous POSSs with randomly distributed ionic groups were also synthesized. These ILs exhibited higher thermal decomposition temperatures compared to general ILs.
Article
Materials Science, Biomaterials
Adrian Chlanda, Przemyslaw Oberbek, Marcin Heljak, Ewa Kijenska-Gawronska, Tomasz Bolek, Michal Gloc, Lukasz John, Mateusz Janeta, Michal J. Wozniak
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2019)
Review
Medicine, Research & Experimental
Ali Akbari, Nassrollah Jabbari, Roholah Sharifi, Mahdi Ahmadi, Ali Vahhabi, Seyyed Javad Seyedzadeh, Muhammad Nawaz, Slawomir Szafert, Monireh Mahmoodi, Esmaiel Jabbari, Rahim Asghari, Jafar Rezaie
Review
Biochemistry & Molecular Biology
Leila Salimi, Ali Akbari, Nassrollah Jabbari, Behnam Mojarad, Ali Vahhabi, Slawomir Szafert, Sadegh Asghari Kalashani, Hamid Soraya, Muhammad Nawaz, Jafar Rezaie
CELL AND BIOSCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Mateusz Janeta, Tadeusz Lis, Slawomir Szafert
CHEMISTRY-A EUROPEAN JOURNAL
(2020)
Article
Chemistry, Organic
Nurbey Gulia, Bartlomiej Pigulski, Slawomir Szafert
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2020)
Article
Biochemistry & Molecular Biology
Przemyslaw Starynowicz, Slawomir Berski, Nurbey Gulia, Karolina Osowska, Tadeusz Lis, Slawomir Szafert
Article
Chemistry, Multidisciplinary
Mateusz Janeta, Julius X. Heidlas, Olafs Daugulis, Maurice Brookhart
Summary: The reactivity of Ni-II and Pd-II olefin polymerization catalysts can be enhanced by introducing electron-withdrawing substituents on the supporting ligands, as demonstrated in this paper. Compared to the trifluoromethyl group, the trippy substituent shows stronger electron-withdrawing ability, leading to better performance in catalytic turnover frequency and polymer molecular weight.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Maryam Feghhi, Jafar Rezaie, Ali Akbari, Nasrollah Jabbari, Hessam Jafari, Farzad Seidi, Slawomir Szafert
Summary: The study found that treatment of HUVECs with POH-POSS NPs enhanced angiogenesis and exosome biogenesis, leading to increased cell survival rate, healing rate, and gene expression.
MATERIALS & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Marzena Pander, Mateusz Janeta, Wojciech Bury
Summary: A tandem postsynthetic modification strategy was developed for Zr-based metal-organic framework (MOF) materials, resulting in well-defined 2-in-1 heterogeneous catalysts with high catalytic activity in the synthesis of cyclic carbonates. Experimental measurements, including DRIFT and solid-state NMR, helped elucidate the role of each component in the catalytic reaction, especially the cooperative effect between Lewis acid sites and the co-catalyst in the heterogeneous system.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Organic
Patrycja Mecik, Bartlomiej Pigulski, Slawomir Szafert
Summary: The synthesis of complex di(selenophen-3-yl)diselenides and 3-methylene-3H-1,2-diselenoles directly from 1-bromobutadiynes was achieved with high yields. The structures of the final products were confirmed by Se-77 NMR and single-crystal X-ray diffraction.
Article
Chemistry, Organic
Nurbey Gulia, Marcin Malecki, Slawomir Szafert
Summary: This study presents an original method for the preparation of N-alkyl and N-aryl pyrazoles using primary aliphatic or aromatic amines as a limiting reagent. The protocol avoids the use of inorganic reagents, requires short reaction time, mild conditions, and utilizes commercially available starting reagents. Pyrazoles with a variety of N-substituents were successfully obtained using this method for both aliphatic and aromatic amines.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Pietro Marabotti, Alberto Milani, Andrea Lucotti, Luigi Brambilla, Matteo Tommasini, Chiara Castiglioni, Patrycja Mecik, Bartlomiej Pigulski, Slawomir Szafert, Carlo Spartaco Casari
Summary: The vibrational properties of push-pull polyynes were studied, indicating that functionalized polyynes may be important building blocks of organic materials with first-order optical nonlinearity. The comprehensive characterization of the vibrational properties of these molecules was achieved through density functional theory calculations and infrared spectroscopy analysis.
Article
Chemistry, Organic
Agata Jarszak-Tyl, Bartlomiej Pigulski, Slawomir Szafert
Summary: A solvent-free coupling reaction of azulenes with 1-haloalkynes and 1-halopolyynes has been developed, which only requires simple grinding of substrates with basic Al2O3 without solvents or precious metal catalysts. The reaction allows for the direct introduction of a linear carbon chain up to (C C)(4), providing easy access to azulene end-capped sp-hybridised carbon molecular wires. Further reactivity testing shows that the resulting azulenes can be transformed into thiophenes through certain derivatives.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Anna M. Szczepkowska, Mateusz Janeta, Milosz Siczek, Wlodzimierz Tylus, Anna M. Trzeciak, Wojciech Bury
Summary: Two model porphyrin metal-organic frameworks were utilized for the incorporation of Rh(I) species through post-synthetic metallation, resulting in the synthesis and structural characterization of new rhodium MOFs (Rh/MOFs), Rh/PCN-222 and Rh/NU-1102. These Rh/MOFs were demonstrated to be active heterogeneous catalysts for the hydrogenation of unsaturated hydrocarbons at mild reaction conditions, with an activation step required during the initial run of the catalytic process. In situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) was utilized to monitor the activation pathway of the catalyst under a H-2 atmosphere.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Guojun Hu, Ziyue Deng, Yanwei Wang, Dan Yuan, Yong Zhang, Yingming Yao
Summary: A series of rare-earth metal complexes were synthesized and used as efficient initiators for the polymerization of trimethylene carbonate (TMC) and (L)-lactide ((L)-LA).
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Van Ha Nguyen, John H. K. Yip
Summary: In this study, eight PtII-azulene complexes were synthesized to investigate the effect of metalation on the electronic structures, spectroscopy, and luminescence of organic chromophores. The results showed that the attachment of Pt substituents to azulene affected the HOMOs, LUMOs, and luminescence properties. The study provides insights into the role of metalation in modifying the properties of organic chromophores.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Moon Kedia, Virender Singh, Bhaskaran Shankar, Malaichamy Sathiyendiran
Summary: This study synthesized two types of neutral binuclear metallocycles using a one-pot solvothermal method and characterized their structures. The analysis revealed that these complexes adopt a binuclear heteroleptic cyclic architecture and belong to phosphine oxide donor (P=O)-based supramolecular coordination cyclic complexes.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Radhey S. Srivastava
Summary: This study demonstrates the effectiveness of zero-valent elements as reductants for the deoxydehydration reaction of polyols catalyzed by ONO-pincer ligated molybdenum dioxo. The insolubility and easy separability of the reductants and their oxidized products during the reaction are emphasized. Additionally, the choice of ligand has an impact on the catalytic performance of the reaction.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Hao Zhou, Yajun Sun, Li Deng, Weiran Yang, Yuehui Li
Summary: Efficient Ru-catalyzed hydrogenation of aldehydes was achieved using carbazole-derived phosphine ligands, with the crucial role of N-H moiety in promoting the catalytic reaction. The method was successfully applied in the Co/Ru-catalyzed hydroformylation process, resulting in the production of long-chain alcohols with excellent yields.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Theodor Danescu, Alexandru Lupan, Radu Silaghi-Dumitrescu, R. Bruce King
Summary: The structures and energies of complexes containing (Me2C2N2P)2Ru2(CO)n and (Me2C2N2P)2Fe2(CO)n have been studied. Low-energy structures are characterized by the presence of bridging diazaphospholyl rings, while higher-energy structures involve different ligand structures.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Savannah C. Kapper, Aamani Ponnekanti, Jonas Schaab, Tian-yi Li, Christine L. Chung, Gael Ung, Peter I. Djurovich, Mark E. Thompson
Summary: Organometallic iridium complexes with two cyclometalated ligands and one bis-oxazoline derived ancillary ligand were studied. These complexes have emission spanning across the visible and near-ultraviolet region, with moderate to high photoluminescence quantum yields. The (ppy)2Ir(BOX-CN) complexes were resolved into Delta- and Lambda-diastereomers based on solubility differences.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Zahra Karimi Sangari, Hossein Naeimi
Summary: In this research, a nanostructured CoCuFe2O4 catalyst was prepared using a brief and useful synthetic strategy. This catalyst was used for synthesizing 1,2,4,5-tetrasubstituted imidazole derivatives under ultrasonic irradiation. The approach offers advantages such as high efficiency, short reaction times, simplicity of the reaction medium, accelerated reaction rates, and easier separation and purification of products.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rukhsana Gul, Wajid Munir, Ebraheem Abdu Musad Saleh, Shaukat Shujah, Muhammad Sirajuddin, Saira Tabassum, Khalil Ur Rehman, Dilfaraz Khan, Sameerah I. Al-Saeedi, Ehab A. Abdelrahman
Summary: Two new Schiff base ligands were synthesized and used to form copper, nickel, and cobalt complexes. The synthesized compounds were characterized and screened for various biological activities. The metal complexes showed better activities in antibacterial, antifungal, antidiabetic, and antioxidant assays.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Review
Chemistry, Inorganic & Nuclear
Ahsan Nazir, Pengwei Huo, Ameena Tur Rasool
Summary: This review explores the potential of g-C3N4-based S-scheme heterojunctions in addressing environmental issues. It summarizes the mechanism and preparation techniques of S-scheme heterojunctions based on g-C3N4, and presents recent studies on their applications in pollutant removal, CO2 reduction, hydrogen production, and bacterial disinfection. The review concludes with an outlook on future challenges for g-C3N4-based S-scheme heterojunctions.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Francois Mazars, Koffi Senam Etse, Guillermo Zaragoza, Lionel Delaude
Summary: The activity of three Pd-PEPPSI catalyst precursors with N-heterocyclic carbene (NHC) ligands derived from caffeine and theophylline in Mizoroki-Heck reactions was tested. The results showed that the catalysts achieved high conversions and yields, especially in the presence of electron-withdrawing substituents.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Bo-Han Wu, Xue Zhou, Lin Liu, Zheng-Bo Han
Summary: Researching carbon dioxide removal from flue gas and natural gas is crucial. Metal-organic frameworks (MOFs) are commonly used in adsorption due to their high surface area, porosity, and chemical properties. An ultra-microporous MOF CPM-20(Co) with mixed ligand was synthesized using inexpensive ligands. The material exhibited high selectivities and low regenerative energy, making it a promising option for CO2 separation in industries.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
