Article
Polymer Science
Jeffrey C. Foster, Joshua T. Damron, Honghai Zhang
Summary: Controlling the monomer sequence of synthetic polymers is a major challenge in polymer science. This study investigates cyclic olefin monomers for ring-opening metathesis polymerization (ROMP) and identifies easily synthesized oxanorbornene imide monomers suitable for single unit addition reactions. The findings enable the synthesis of multiblock copolymers with precise functionalization sites and singly cross-linked four-armed star copolymers.
Article
Multidisciplinary Sciences
Limiao Shi, Aurelie Boulegue-Mondiere, Delphine Blanc, Antoine Baceiredo, Vicenc Branchadell, Tsuyoshi Kato
Summary: Contamination of silicone synthesis products with cyclic oligosiloxanes can be prevented by coordinating alcohols to the polymer chain ends and using a well-designed phosphonium cation as a self-quenching system. This allows for thermodynamically controlled ring-opening polymerization of siloxane rings without the formation of undesired cyclic oligosiloxanes.
Article
Chemistry, Multidisciplinary
Shannon M. North, Steven P. Armes
Summary: In this study, zwitterionic diblock copolymers were successfully synthesized using RAFT polymerization in a wholly aqueous environment, with the isoelectric point in aqueous solution tunable by varying monomer proportions. These copolymers show promise for potential applications.
Article
Polymer Science
Zhunxuan Li, Rui Chen, Ying Wang, Linlin Zhu, Wenyi Luo, Zhen Zhang, Nikos Hadjichristidis
Summary: An efficient synthetic methodology was developed for the modification of hyperbranched polyethyleneimines (PEI) using N-sulfonyl aziridines, resulting in materials with unique fluorescence properties and the ability to remove hazardous metals.
Article
Polymer Science
Shin Inagaki, Tomoya Higashihara
Summary: A novel ABC-type triblock copolymer, consisting of PMMA, P3HT, and PS, was synthesized by the bilateral CuAAC reaction, resulting in a high yield.
Article
Polymer Science
Rui Chen, Ying Wang, Linlin Zhu, Zhen Zhang
Summary: An ultrafast method for controlled synthesis of polysulfonamides through organocatalytic anionic ring-opening polymerization (ROP) in the melt has been established. Using N,N,N',N'',N''-pentamethyldiethylenetriamine (PMDETA) as catalyst, poly(2-methyl-N-tosylaziridine) with molecular weight over 100 kg/mol can be synthesized in less than 90 s. Various initiators can be applied to achieve molecular weight and end-group controlled polymers under open-flask conditions.
JOURNAL OF POLYMER SCIENCE
(2021)
Article
Polymer Science
Farhad Jamali, Davood Hassanian-Moghaddam, Saeid Ahmadjo, Seyed Mohammad Mahdi Mortazavi, Yasaman Maddah, Mostafa Ahmadi
Summary: In this study, we successfully synthesized PE-PCL block copolymers containing both polar and non-polar segments through a two-step polymerization process. The block copolymers exhibit diverse crystal structures and phase separation between the PE and PCL segments. Additionally, the block copolymers act as compatibilizers in the blends. Rheology results show a high order-disorder transition temperature for the block copolymers.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Yuu Nakabayashi, Koji Nakano
Summary: Aliphatic polycarbonate (APC) macromolecular chain-transfer agents with an allyl end group were successfully synthesized using cobalt-catalyzed epoxide/carbon dioxide copolymerization in the presence of allyl alcohol. The thermal degradation temperatures of the APC blocks were slightly higher compared to previously reported block copolymers containing APC and vinyl-polymer blocks.
Article
Chemistry, Multidisciplinary
Ankita Mandal, Indradip Mandal, Andreas F. M. Kilbinger
Summary: This article describes a catalytic living ring-opening metathesis copolymerization method that achieves narrow dispersity, excellent molar mass control, and the ability to form block copolymers through a degenerative, reversible, and regioselective exchange of propagating Fischer-carbenes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Meng Huo, Yawen Bian, Chunyang Yu, Gangsheng Tong, Chongyin Zhang, Xinyuan Zhu
Summary: This study presents an AROP method for N-sulfonyl aziridines that can be operated in air environment using sulfanions as initiators. Open-vessel polymerization resulted in a range of polymers with high livingness and narrow molecular weight distributions, enabling further post-polymerization functionalization.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Polymer Science
Hongyuan Bai, Li Han, Xuefei Wang, Hong Yan, Siwen Chen, Haitao Leng, Zijing Yao, Hongwei Ma
Summary: The sequence distribution of CPVB and t-St units in anionic polymerization can be controlled by adjusting the reaction temperature, allowing the synthesis of multiblock copolymers with precise compositions and chain lengths. The resulting polymers undergo cationic cyclization to exhibit unique fluorescence properties and thermal resistance.
Article
Chemistry, Applied
Linlin Zhu, Qinyong Chen, Ying Wang, Huishan Huang, Wenyi Luo, Zhunxuan Li, Zhen Zhang, Nikos Hadjichristidis
Summary: A facile and effective method involving ring-opening copolymerization of N-sulfonyl aziridines towards cellulose has been developed for efficient oil/water separation. The modified cellulose paper material showed promising properties for efficient oil/water separations, with a grafting ratio ranging from 96 to 150% and a contact angle over 127°.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Daniel J. Eyckens, Shaun Howard, Graeme Moad, Benjamin W. Muir, Almar Postma, Ranya Simons
Summary: Using RAFT crosslinking polymerisation and Chemspeed robotic synthesis platform, we optimized conditions to produce PDMS-arm star polymers through an arm-first strategy. The high-throughput polymer product library showed low dispersity (D approximately 1.5), high monomer conversion (>85%), and consistent size (20-40 nm). Varying the crosslinker resulted in differences in polymer product profiles, with larger linkers causing reduced Mn and multimodal distribution compared to ethylene glycol dimethacrylate, regardless of starting arm composition or Mn. Thermogravimetric analysis revealed higher thermal stability for star polymers with increased PDMS content.
Article
Polymer Science
Kjersti G. Oberle, Elizabeth L. Whitman, Charles S. Jolly, Katherine A. Webster, Benjamin S. Marx, Christopher M. Howard, Clara A. Hanger, Erin E. Ramey, Yutong Zou, Jared C. Lowe, Mark Turlington, Christopher R. Turlington
Summary: This study successfully synthesizes metallopolymers using organocatalytic methods, bridging the fields of organocatalysis and metallopolymers and establishing a new paradigm for the compatibility of metallic monomers with OROP.
Article
Polymer Science
Moritz Meier-Merziger, Marcel Fickenscher, Frank Hartmann, Bjoern Kuttich, Tobias Kraus, Markus Gallei, Holger Frey
Summary: Bifunctional initiators were used to synthesize complex triblock copolymer structures in carbanionic polymerization. Isoprene was polymerized using 1,3-bis(1-phenylethenyl)benzene (PEB), resulting in a high content of 93% 1,4-PI units. Hydroxyl groups were then introduced simultaneously in the alpha- and omega-position using end-functionalization of the living anionic di-lithiated polyisoprene (PI) chains with 1,2-isopropylidene glyceryl glycidyl ether (IGG) and subsequent acidic deprotection. The resulting hexa-hydroxy functional PI-macroinitiators were used to initiate l-lactide (LLA) polymerization, leading to the formation of super-H-shaped (PLLA)(3)-b-PI-b-(PLLA)(3) triblock structures with narrow molecular weight distributions.
Article
Chemistry, Physical
Sarra Mezhoud, Benjamin Le Droumaguet, Patrick Aimedieu, Vincent Monchiet, Michel Bornert, Daniel Grande
Summary: Doubly porous polymeric materials were prepared using a double porogen templating approach with 2-hydroxyethyl methacrylate (HEMA). The use of different sizes of sieved NaCl particles and isopropanol as porogenic solvent was crucial to the preparation process. Results showed that SPS-mediated sintering of macroparticles resulted in higher porosity ratios and specific surface areas compared to non-sintered particles, highlighting the importance of macroporogen packing. Further imaging analysis confirmed these findings, while the size of macroporogens also played a significant role in determining the porosity features. Swelling behavior of the materials was also studied, revealing high water uptake in materials with interconnected higher porosity levels.
COLLOID AND POLYMER SCIENCE
(2021)
Article
Polymer Science
Angelica Velazquez, Daniel Grande, Luis Ernesto Elizalde
Summary: In this study, esters of 2-bromo-2-methylpropanoate of poly(oxyalkylene) polymers were prepared and characterized, with a focus on the effects of solvents and cationic agents on mass spectrometry results. It was found that the analyte undergoes transformation to different end-groups when certain cationic agents are used. The well-defined bromine-terminated macromolecules obtained could serve as ATRP macroinitiators for the synthesis of diverse polymeric architectures for drug delivery bioconjugates.
Article
Polymer Science
Olga Grigoryeva, Alexander Fainleib, Olga Starostenko, Kristina Gusakova, Viktor Sakhno, Andrey Borzakovskiy, Tetyana Kovalinska, Boulous Youssef, Fabrice Gouanve, Eliane Espuche, Daniel Grande
Summary: Thermally stable nanoporous polymer films were created by combining thermosetting CERs and LPU, followed by alpha-particle irradiation and chemical etching. The resulting films showed well-defined nanoporous structures, high thermal characteristics, and effective gas transport properties. The materials have potential applications as ultrafiltration membranes in advanced technologies, especially under extreme conditions.
Article
Polymer Science
Thi-Thanh-Tam Nguyen, Daniel Grande, Clemence Le Coeur, Alicia Contreras, Alina Vashchuk, Alexander Fainleib, Encarnacion Torralba, Stephane Bastide
Summary: A novel approach has been developed to elaborate nanoporous polymers using nanoporous gold as a template, allowing for the replication of any polymeric material based on the solubility behavior. The resulting nanoporous polymers exhibit well-defined nanostructures with a homogeneous size distribution, showing promise for versatile polymer diversity and precise tuning of nanostructure size.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Romain Poupart, Mohamed Guerrouache, Daniel Grande, Benjamin Le Droumaguet, Benjamin Carbonnier
Summary: Monoliths functionalized with ethylene diamine-derived ligands were synthesized for immobilizing in-situ generated gold nanoparticles, and successfully used as flow-through microreactors for catalytic reduction of nitroaromatic compounds. The grafted amine-containing ligands played a key role in determining the morphology, size, and dispersion of the immobilized gold nanoparticles.
Article
Chemistry, Applied
Melisa Trejo-Maldonado, Luis Ernesto Elizalde, Benjamin Le Droumaguet, Daniel Grande
Summary: A versatile approach was developed for the preparation of porous polystyrene frameworks functionalized with triazolyl moieties. The porous materials were synthesized from PLA-b-P(S-stat-4-AMS) diblock copolymer precursors and characterized by various analytical techniques. Functionalization of the materials with p-tolylacetylene or 2-methyl-3-butyn-2-ol was achieved via copper-catalyzed azide-alkyne cycloaddition, resulting in high yields of the triazole ring.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Polymer Science
Vierajitha Srikanthan, Olivier Pitois, Philippe Coussot, Benjamin Le Droumaguet, Daniel Grande
Summary: The study focused on designing wood-mimicking polymeric structures using a double porogen templating approach, resulting in biporous materials with anistotropic tubular macropores surrounded by a nanoporous matrix. The two porosity levels could be independently tuned by varying structural parameters, and the possibility to chemically modify the pore surface to vary material surface properties was successfully demonstrated.
Article
Multidisciplinary Sciences
Fatima Bouanis, Mohamed Bensifia, Ileana Florea, Samia Mahouche-Chergui, Benjamin Carbonnier, Daniel Grande, Celine Leonard, Abderrahim Yassar, Didier Pribat
Summary: This scientific article presents the data and analysis of non-covalent functionalization of single-walled carbon nanotubes with Fe-/Co-porphyrin and Co-phthalocyanine for field-effect transistor applications. The research includes morphological, chemical, and structural analyses using techniques such as Raman spectroscopy and transmission electron microscopy. The work also involves theoretical calculations using Density Functional Theory (DFT).
Article
Pharmacology & Pharmacy
Jocelyn C. Ayala-Fuentes, Melissa Zulahi Gallegos-Granados, Luis Jesus Villarreal-Gomez, Marilena Antunes-Ricardo, Daniel Grande, Rocio Alejandra Chavez-Santoscoy
Summary: Quercetin, a bioactive component with therapeutic potential, faces challenges in stability and bioavailability in the gastrointestinal tract. The use of inulin-coated nanoparticles can overcome these limitations, ensuring the stability and release of quercetin in target cells.
Review
Polymer Science
Benjamin Le Droumaguet, Mohamed Guerrouache, Benjamin Carbonnier
Summary: The click chemistry methodology has experienced rapid expansion in various domains related to organic chemistry in the past two decades. It has been widely adopted in surface chemistry, mainly due to its high-yielding reactions. The click ligation strategy is powerful and versatile, and can be used in the design and synthesis of complex systems for chromatographic supports, with promising applications in analytical sciences.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Review
Polymer Science
Benjamin Le Droumaguet, Romain Poupart, Mohamed Guerrouache, Benjamin Carbonnier, Daniel Grande
Summary: Hybrid materials consisting of metallic nanoparticles adsorbed on porous polymeric supports have been a subject of intense research for many years. These materials benefit from intrinsic properties of both components, such as high specific surface area and catalytic properties, leading to successful catalytic reactions.
Article
Polymer Science
Erigene Bakangura, David Fournier, Fanny Coumes, Patrice Woisel, Daniel Grande, Benjamin Le Droumaguet
Summary: Functional nanoporous polymeric materials were prepared from novel PS-b-PEO diblock copolymer precursors containing reversible boronate ester junction. The generation of oriented cylindrical nanopores was achieved by selective etching of PEO under mild acidic conditions.
Article
Chemistry, Applied
Xiaodan Wu, Zihan Wang, Guansong Shao, Bingyang Qin, Ying Wang, Tao Wang, Zhiguo Liu, Yujie Fu
Summary: In this study, a new type of cellulose-based ionic imprinting adsorbent was developed for the selective removal of cobalt ions. The adsorbent exhibited excellent adsorption performance, high cycling stability, and preferential selectivity for cobalt ions. The simple preparation method and promising application prospects make it a promising candidate for water treatment.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Chandirasekar Shanmugam, Vanitha Marimuthu, Nagappan Rajendiran
Summary: In this study, monodispersed gold and silver nanoparticles were synthesized using cholic acid functionalized star poly(DL-lactide) as a capping and reducing agent. The synthesized materials were found to be effective heterogeneous catalysts for the reduction reaction.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Bianca-Iulia Ciubotaru, Mirela-Fernanda Zaltariov, Mihaela Dascalu, Adrian Bele, Alexandra Bargan, Maria Cazacu
Summary: Porous networks were obtained using polysiloxanes pendant functionalized with aminopropyl groups. The addition of certain substances, such as ammonium bicarbonate and acetic acid, promoted the porosity and covalent cross-linking of the polymer. The resulting materials exhibited high dielectric permittivity and significant electrical output signal when subjected to compression, making them suitable for capacitive pressure sensors.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Mohamed A. Zein, Basim H. Asghar, Abdulaziz M. Almohyawi, Norah F. Alqahtani, Ahmed Alharbi, J. Alkabli, Reda F. M. Elshaarawy, Lamia A. Ismail
Summary: In this study, new amphiphilic chitosan-thyme extract-nanosilver nanocomposites were prepared, which synergistically inhibited bacterial biofilm formation and bacterial proliferation. The nanocomposites disrupted bacterial cell membranes, causing cell death, and prevented biofilm formation. In addition, the nanocomposites exhibited good biocompatibility, making them potential candidates for biomedical applications.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Review
Chemistry, Applied
Norah F. Alqahtani
Summary: This review explores the potential of Imidazolium-based ionic liquids (ImILs) in improving the solubility, stability, and functionality of chitosan, and provides an overview of the types and preparation methods of functionalized imidazolium ionic liquids (FImILs). Additionally, it discusses the various opportunities offered by FImIL-chitosan derivatives.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Olesya N. Zabegaeva, Alexey F. Kosolapov, Sergei L. Semjonov, Mariam G. Ezernitskaya, Egor S. Afanasyev, Ivan A. Godovikov, Alexander Chuchalov, Dmitriy A. Sapozhnikov
Summary: Polyimides are commonly used as primary protective coatings for optical fibers in high-temperature applications. However, the manufacturing process is complicated due to certain drawbacks. This study shows the potential use of polyamide-imides as highly reliable protective coatings for optical fibers.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Chemistry, Applied
Luis Miguel Nunez Tapia, Pascal Thebault, Laurent Bischoff, Alain Ledoux, Florian Defontaine, Olivier Lesouhaitier, Fabrice Burel
Summary: A water soluble cationic bis-cyclocarbonate was prepared through a three steps procedure, and non-isocyanate polyurethanes were prepared in acetonitrile with high yields. The resulting materials exhibited good thermal properties and hydrophilic properties. The polyurethane thermoset showed high inhibition towards bacteria, and the bis-cyclocarbonate oligomer was found to be harmless to organisms.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
