Article
Materials Science, Multidisciplinary
Minh-Loan Tran-Do, Jean-Pierre Habas, Bruno Ameduri
Summary: This study presents the oxygen-tolerant radical copolymerization of fluorinated monomers with vinyl ethers at room temperature in the presence of a tri-nbutylborane methoxypropylamine (TBB-MOPA)/CH3COOH system. Different alternating poly(FO-alt-VE) copolymers were synthesized, characterized, and studied for their thermomechanical properties and stabilities. The resulting copolymers showed high thermostability and hydrophobic surfaces, suggesting potential applications in paints, coatings, and elastomers.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Nicole Ziegenbalg, Franka Gruschwitz, Torben Adermann, Lukas Mayr, Svetlana Guriyanova, Johannes C. Brendel
Summary: In contrast to commonly used activated monomers, vinyl thioethers possess unique characteristics and can be used as a reactive building block for the preparation of functional polymers. Recent progress in the direct vinylation of mercaptans has made vinyl mercaptoethanol an attractive monomer for future materials design.
Article
Polymer Science
Xiaoyan Xu, Makoto Ouchi
Summary: In this study, AAB sequence-controlled copolymers were successfully synthesized via radical cyclocopolymerization and aminolysis reaction. The thermal response behaviors and periodic sequence of the copolymers were evaluated through experimental comparisons.
Article
Polymer Science
Manu Narayanan, Kyu Yong Choi
Summary: This study demonstrates the experimental study of semibatch emulsion and miniemulsion copolymerization of vinyl acetate (VAc) and ethylene, showing that miniemulsion polymerization has higher ethylene incorporation into the copolymer compared to emulsion polymerization. The VAE copolymer latex particles prepared by miniemulsion polymerization also exhibit higher storage stability than those prepared by macro-emulsion polymerization.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Qinzhi Quan, Mingyu Ma, Zongtao Wang, Yu Gu, Mao Chen
Summary: An organocatalyzed controlled radical alternating terpolymerization of PFVEs and VEs under visible-light irradiation was developed, allowing the synthesis of a broad scope of fluorinated terpolymers with low dispersities and high chain-end fidelity. This method facilitates tuning the chemical compositions by rationally choosing the type and ratio of comonomers, and also enables temporal control of chain-growth and the preparation of novel fluorinated block copolymers. The versatility of this method was showcased by synthesizing fluorinated alternating terpolymers customized to display a variety of desirable properties for solid polymer electrolyte design, leading to new opportunities in high-performance energy storage devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Hamid Reza Hedayati, Manounchehr Khorasani, Mostafa Ahmadi, Nicholas Ballard
Summary: In this study, well-defined and linear PVAc was synthesized using RAFT polymerization method, overcoming the difficulties in controlling molecular weight distribution during the hydrolysis of PVAc. This offers a potential route to the production of PVAc and PVA products with uniform properties.
Article
Polymer Science
Dries Wyers, Toon Goris, Yana De Smet, Tanja Junkers
Summary: In this study, a consistent acrylamide monomer library mimicking essential amino acids was established using reversible deactivation radical polymerization techniques. Five model monomers representing the five major groups of amino acids were successfully synthesized and polymerized via thermal RAFT or photoRAFT approaches, resulting in well-defined polymer materials.
Article
Polymer Science
Florian Baffie, Olivier Boyron, Muriel Lansalot, Vincent Monteil, Franck D'Agosto
Summary: In this study, iodine transfer (co)polymerization (ITP) was used to synthesize polyethylene (PE) and poly(ethylene-co-vinyl acetate) (EVA) by employing tri- and tetra-iodofunctionalized chain transfer agents (CTAs) to generate secondary reinitiating radicals. The results showed that well-defined linear PEs with one or two iodo chain ends, as well as three- and four-arm star PE, can be obtained with good control of the polymerization. Furthermore, the copolymerization of ethylene and vinyl acetate led to the formation of well-defined four-arm star EVA.
Article
Polymer Science
Florian Baffie, Olivier Boyron, Muriel Lansalot, Vincent Monteil, Franck D'Agosto
Summary: Iodine transfer polymerization was used to produce polyethylene and poly(ethylene-co-vinyl acetate). A comparison of the kinetics and structures of the polymers formed using different iodine and di-iodo chain transfer agents showed that the iodine transfer polymerization method allows for good control of the polymerization process.
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
Haiwang Lai, Changming Jin, Junsu Park, Ryohei Ikura, Yoshinori Takashima, Makoto Ouchi
Summary: In this study, a bulky monomer with an alkyl-substituted trichloro salicylic acid pendant was designed to enable the synthesis of an alternating copolymer of MMA and nBA. The monomer showed low homopolymerization propensity but formed the alternating copolymer with nBA via copolymerization. The 1-Ad units in the copolymer were selectively transformed into MMA via transesterification, resulting in an alternating copolymer of MMA and nBA. Its alternating sequence was confirmed by structural analysis and the copolymer showed superior self-healing ability compared to the corresponding statistical copolymer.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Francis O. Boadi, Nicole S. Sampson
Summary: Bicyclo[4.2.0]oct-6-ene-7-carboxamide can form an alternating copolymer with cyclohexene in the presence of N-heterocyclic carbene-ruthenium catalyst. By creating a gradient copolymer with two different monomers, specific surface hydrophobicity, topology, and thermal properties can be controlled.
Article
Polymer Science
Ting Wang, Zi-long Wang, Abdul Qadeer Dayo, Cheng-yu Shi, Hui-bo Liu, Zhong-cheng Pan, Athar Ali Khan Gorar, Jun Wang, Heng Zhou, Wen-bin Liu
Summary: A novel autocatalytic monomer, OPD, was obtained through nucleophilic substitution, which has good processability and high glass-transition temperature. By modifying OPD monomer with multi-functional fluorene-based benzoxazine monomers (MFFB), the properties of the polymer were further improved.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Kazuya Maruyama, Arihiro Kanazawa, Sadahito Aoshima
Summary: A one-pot synthesis method was developed for the controllable synthesis of ABC-type periodic terpolymers. The method involved the sequential-programmed cyclic monomer synthesis and living cationic copolymerization. The terpolymers exhibited controlled molecular weights, periodic sequence, molecular weight distribution, and chain ends. Additionally, the terpolymers could be degraded by acid. Furthermore, ABC-type sequence terpolymers and periodic block quaterpolymers were synthesized by the addition of different vinyl monomers.
Article
Polymer Science
Tadashi Naito, Arihiro Kanazawa, Sadahito Aoshima
Summary: In this study, alternating cationic copolymerizations were investigated to obtain polymers with ABCC-type monomer sequences, which were prepared from the reaction of 2-chloroethyl vinyl ether (CEVE) and cyclic trimers. The kinds of vinyl monomers and aldehyde molecules incorporated into the cyclic trimers affected the copolymerization frequencies with CEVE, and a cyclic trimer consisting of isobutyl VE (IBVE) and 2-nonenal (NNE) showed highly effective alternating copolymerizations with CEVE at appropriate monomer concentrations. Structural analysis of the methanolysis products revealed mainly ABCC-type periodic sequences (83% under optimized conditions).
Article
Polymer Science
Minoru Koyama, Midori Akiyama, Kimiaki Kashiwagi, Kyoko Nozaki, Takashi Okazoe
Summary: In this study, a CF3-rich perfluoropolyether (PFPE) with a crystalline structure was successfully synthesized. This solid PFPE exhibited higher water- and oil-repellency compared to polytetrafluoroethylene (PTFE).
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Polymer Science
Megan R. Hill, Shan Tang, Koichiro Masada, Yuko Hirooka, Kyoko Nozaki
Summary: The ability to copolymerize monomers greatly expands the range of material properties that can be achieved for a specific monomer. We investigated the radical copolymerization of a lactone monomer, EVP, made from butadiene and carbon dioxide, and found that the unique bicyclic structure of EVP increased the glass transition temperature of commodity polymers and allowed for the incorporation of functionality.
Correction
Multidisciplinary Sciences
Weifan Wang, Fiona Hanindita, Yosuke Hamamoto, Yongxin Li, Shingo Ito
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Weifan Wang, Fiona Hanindita, Yosuke Hamamoto, Yongxin Li, Shingo Ito
Summary: A fully conjugated azacorannulene dimer with a large pi-surface has been successfully synthesized, which exhibits unique selective association with a dumbbell-shaped C-60 dimer and shows high quantum yield of red fluorescence. The utilization of a fully conjugated bifunctional azomethine ylide for the synthesis of large multiazafullerene fragments is a powerful method and has significant implications for the selective total synthesis of multiazafullerenes.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Weifan Wang, Fiona Hanindita, Richard D. Webster, Shingo Ito
Summary: Buckybowl molecules, with their unique structure and chemical properties, have garnered significant attention across scientific disciplines. The fusion of buckybowl molecules offers a new strategy to expand the pi-surface of polycyclic aromatic compounds, although fusion of heteroatom-embedded buckybowls remains uncommon.
Article
Chemistry, Multidisciplinary
Weifan Wang, Fiona Hanindita, Yusei Tanaka, Kotaro Ochiai, Hiroyasu Sato, Yongxin Li, Takuma Yasuda, Shingo Ito
Summary: Sulfur-embedded polycyclic aromatic compounds have been widely used in the construction of organic semiconductors, but investigations on aromatic compounds containing thiepine, a sulfur-containing seven-membered-ring arene, have been limited. This study presents the synthesis and properties of pi-extended pyrrole-fused thiepine and oxepine compounds. A pi-extended pyrrole-fused thiepine exhibited a tilted pi-stacking structure in the crystal and demonstrated a high charge carrier mobility of up to 1.0 cm(2) V-1 s(-1) in single-crystal field-effect transistors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Kang Yuan, Yukari Yamazaki, Xiongjie Jin, Kyoko Nozaki
Summary: A tungsten- and zirconium-oxide-supported platinum catalyst was developed for the hydrogenolysis of esters to alkanes at low temperatures and ambient pressure. The catalyst showed high activity, selectivity, and could be reused multiple times without significant loss.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Takuya Higashi, Shuhei Kusumoto, Kyoko Nozaki
Summary: We report a vanadium(I) complex of cyclopentadienone, a low-valent early transition metal, which shows electron transfer from the metal to the ligand. The complex exhibits catalytic transformations and elementary reactions, known as metal-ligand cooperation.
Article
Chemistry, Inorganic & Nuclear
Koichiro Masada, Shuhei Kusumoto, Kyoko Nozaki
Summary: This article discusses the structure and reactivity of novel Ag(I) complexes with tridentate phosphabenzene ligands. An equilibrium between the dimer and the monomer was observed for the lambda 3-phosphabenzene Ag(I) complex in the solution state. The lambda 3-phosphabenzene Ag(I) complex can be oxidized by PhI(OAc)2 to afford lambda 5-phosphabenzene species while maintaining coordination to the metal center. The photochemical properties of the Ag(I) complexes were also investigated, and the emission of the lambda 3-phosphabenzene Ag(I) complex showed solvatochromic behavior.
Article
Polymer Science
Kazuki Tsuge, Kate Lau, Yuko Hirooka, Takanori Iwasaki, Katsuyuki Yokomizo, Kyoko Nozaki
Summary: In this study, copolymerization of ethylene or propylene with norbornenes functionalized with polar groups using various palladium catalysts was reported. The structural analyses of the copolymers and evaluation of their thermal properties were conducted. This work also demonstrated the coordination-insertion copolymerization of propylene with disubstituted polar olefins for the first time.
Article
Multidisciplinary Sciences
Takanori Iwasaki, Kazuki Tsuge, Naoki Naito, Kyoko Nozaki
Summary: This study reports an Ir catalyst for the selective hydrogenolysis of urea derivatives, achieving the transformation of less reactive carbonyl compounds in the presence of more reactive ones. The proposed catalyst showed tolerance to highly reactive carbonyl groups such as ester, amide, and carbamate, and exhibited high chemoselectivity towards urea. This research provides a new strategy for the chemical recycling of polyurea resins.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Kakeru Saito, Shuhei Kusumoto, Kyoko Nozaki
Summary: A novel cyclic bis(carbodiphosphorane) ligand was prepared and coordinated with group 13 elements, B, Al, and Ga. The ligand formed dinuclear adducts with Al and Ga, but formed a monomeric dicationic three-coordinate boron species with boron trichloride. X-ray crystallography revealed that the boron center in the dicationic compound had a strained trigonal geometry enforced by the cyclic structure. Theoretical investigation suggested the presence of tricationic two-coordinate boron resonance structure supported by the CDP ligands.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Organic
Shuma Sasaki, Jun Kikuchi, Shingo Ito, Naohiko Yoshikai
Summary: In this study, a method for preparing stereodefined enolates by leveraging the stereoselective oxyfunctionalization of unactivated alkynes and their reaction with aldehydes to form γ,δ-unsaturated β-diketones was described.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Koichiro Masada, Kiyosumi Okabe, Shuhei Kusumoto, Kyoko Nozaki
Summary: Bimetallic complexes with bridging ligands enable precise control of catalysis. This study prepared a dinuclear Rh(-i)/Rh(i) complex bridged by tridentate phosphine-phosphinine-phosphine ligands using reduction. X-ray analysis and DFT calculations showed that the phosphinine ligands adopted an unsymmetric bridging mode, accepting d-electrons from one Rh center and donating lone pairs to the other Rh center.
Article
Chemistry, Multidisciplinary
Yuki Ito, Akiya Adachi, Kohsuke Aikawa, Kyoko Nozaki, Takashi Okazoe
Summary: This paper discloses the palladium-catalyzed aminofluorination of styrenes using novel N-fluorobenzenesulfonimide (NFSI) derivatives with deprotectable substituents, and the selective deprotection and transformation of the resulting products into amines under mild reaction conditions.
CHEMICAL COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
