Article
Polymer Science
Narumi Miyasako, Shin-ichi Matsuoka, Masato Suzuki
Summary: New ester-functionalized bicyclic aliphatic polymers were successfully synthesized through ring-opening metathesis polymerization (ROMP) of various norbornene lactones and their analogues, followed by hydrogenation. The comparison and discussion of polymerizability and thermal properties between different monomers before and after hydrogenation were conducted. The obtained polymers showed excellent thermal stability and processing deformation suitable for transparent resin materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Phong K. Quach, Jesse H. Hsu, Ivan Keresztes, Brett P. Fors, Tristan H. Lambert
Summary: The ring-opening metathesis polymerization of cyclopropenes using hydrazonium initiators was investigated. The initiators, formed by condensing 2,3-diazabicyclo[2.2.2]octane and an aldehyde, polymerize cyclopropene monomers through a sequence of [3+2] cycloaddition and cycloreversion reactions. The study showed that the monomer to initiator ratio had a positive correlation with the degree of polymerization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Honggang Mei, Bingjie Zhao, Huaming Wang, Sixun Zheng
Summary: The preparation of crosslinked PDCPD nanoparticles via ROMP-induced self-assembly approach was reported in this communication. The morphology of the obtained nanoparticles varied from spherical, cylindrical to planar depending on the molecular weights of Macro-CTAs, the concentrations of DCPD and the natures of solvents. The ROMPISA method provides a new and efficient approach to prepare crosslinked polymer nanoparticles.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Yujin Cha, JiHyeon Hwang, Luis Ramos, Huina Lin, Tianyu Zhu, Chuanbing Tang
Summary: The synthesis of cyclic cobaltocenium and its application in the synthesis of high-performance copolymers have been reported.
Article
Chemistry, Multidisciplinary
Dmitry S. Belov, Logesh Mathivathanan, Melanie J. Beazley, William Blake Martin, Konstantin V. Bukhryakov
Summary: The study explores the capability of an iron-based catalyst in performing ring-opening metathesis polymerization of olefins, demonstrating that the use of in situ prepared heteroleptic iron catalysts significantly enhances polymerization rate and selectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Applied
Nina Guy, Olivia Giani, Sebastien Blanquer, Julien Pinaud, Jean-Jacques Robin
Summary: Photopolymerization is gaining interest in both industrial and academic fields due to its high reaction kinetics, low emissions of organic solvents, and reduced shrinking stress. This method has mainly been developed for radical polymerization of vinyl monomers and to a lesser extent for ring-opening polymerization (ROP). With the emergence of new initiating systems, the photopolymerization of various cyclic monomers has expanded beyond epoxides, which were the first monomers polymerized by cationic ring-opening polymerization (CROP).
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Mohammad Yasir, Andreas F. M. Kilbinger
Summary: Norbornene and cyclohexene show different polymerization behaviors using Grubbs' catalysts due to their varying ring strain energy levels; a sequence-selective cascade polymerization of a monomer containing both rings resulted in polymers with moderate molecular weight dispersities and good control over molecular weight.
Article
Chemistry, Multidisciplinary
Zhen Yu, Meng Wang, Xu-Man Chen, Shuai Huang, Hong Yang
Summary: The novel macrobicyclic olefin system shows good selectivity and high stereoselectivity in ROMP, with sacrificial cleavage of the silyloxide bridge providing clean-structured, non-auxiliaried polymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Federica Sbordone, Juliet Veskova, Bailey Richardson, Phuong Thi Do, Aaron Micallef, Hendrik Frisch
Summary: Biopolymers, such as proteins and nucleic acids, are essential for life, while synthetic polymers have greatly impacted our everyday lives. By combining the functionality of biopolymers with the versatility of synthetic polymers, it is possible to create materials with tailored properties for various applications. However, traditional radical polymerization typically yields non-functional all-carbon backbones, limiting the incorporation of natural polymers into synthetic polymers. In this study, we developed a solid-phase peptide synthesis approach to generate synthetic peptide conjugates that can be readily copolymerized with synthetic comonomers, allowing for the incorporation of defined peptide sequences into the main chain of synthetic polymers. This strategy is compatible with all 20 standard amino acids and uses commonly available chemicals, making it suitable for widespread application.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Federica Sbordone, Juliet Veskova, Bailey Richardson, Phuong Thi Do, Aaron Micallef, Hendrik Frisch
Summary: Biopolymers, such as proteins and nucleic acids, are crucial to life, while synthetic polymers have greatly impacted our daily lives due to their accessibility. By combining the functionality of biopolymers with the durability of synthetic polymers, it is possible to create materials that can be customized for various applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Polymer Science
Jiaxi Xu, Nikos Hadjichristidis
Summary: The incorporation of heteroatom-containing weak bonds along polymer backbones has become a popular tool to accelerate degradation. Many methods have been reported for the synthesis of degradable heteroatom-containing polymers based on step-growth polymerization and chain-growth ring-opening polymerization. Ring-opening metathesis polymerization has emerged as an approach for the synthesis of various types of degradable polymers. This review covers the synthesis of different heteroatom-containing degradable polymers via ring-opening metathesis polymerization and their degradation mechanisms under different conditions.
PROGRESS IN POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Taeyang An, Hanseul Ryu, Tae-Lim Choi
Summary: This study presents a versatile approach to improve the alternation and degradability of 2,3-dihydrofuran (DHF) copolymers by carefully controlling the reactivity of both the Ru initiators and the monomers. The DHF copolymers showed outstanding A, B-alternation and could be broken down to a single repeat unit level under acidic conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Ervin Kovacs, Bence Balterer, Nguyen Anh Duc, Gyorgyi Szarka, Michael C. Owen, Attila Domjan, Bela Ivan
Summary: A large number of organic solvents contaminate the environment on a daily basis worldwide. This study demonstrates that benzotrifluoride can be used as a suitable solvent for olefin metathesis reactions, providing high yields and similar or even higher reaction rates compared to dichloromethane.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Tapas Debsharma, Bernd Schmidt, Andre Laschewsky, Helmut Schlaad
Summary: Polymerization of biomass-derived levoglucosenyl alkyl ethers using the Grubbs catalyst yields thermoplastic polyacetals with specific thermal properties in various solvents. The initiation step of the polymerization process is slow, with catalyst consumption leading to deactivation of chain ends.
Article
Chemistry, Multidisciplinary
Jing Bai, Yu Wang, Wei You
Summary: This study proposes a novel method for synthesizing POE analogues with well-defined alkyl branches via ring-opening metathesis polymerization. By overcoming the challenges in defining the distribution and length of branches in traditional POE synthesis, this approach provides a new platform for studying the influence of branches on the properties of POEs.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Bin Song, Xin Fan, Haibin Gu
Summary: Hydrogels have gained extensive enthusiasm from researchers due to their versatility. The integration of various functional characteristics is crucial for stable performance in different environments. A multifunctional conductive polyvinyl alcohol (PVA) organohydrogel was developed by utilizing chestnut tannin as a crosslinking agent, nano-silver particles as an antimicrobial agent, and aluminum trichloride as a conducting medium. The PCAAG organohydrogel exhibited excellent physical and mechanical properties, bacteriostatic effects, and freeze resistance, making it suitable for various applications such as motion monitoring, flexible keyboards, and velocity sensing. Overall, the PCAAG organohydrogel shows remarkable potential in fields such as artificial intelligence, sport management, soft robots, and human-computer interface.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Tao Ke, Li Zhao, Xin Fan, Haibin Gu
Summary: In this study, a starch-based composite conductive organohydrogel with self-healing, self-adhesion, and antibacterial properties was successfully developed. The organohydrogel showed stable performance in different environments and demonstrated great potential for various applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Polymer Science
Xin Fan, Xiong Liu, Fangfei Liu, Haibin Gu
Summary: Hydrogels with stimuli-responsive behavior, including temperature and beta-cyclodextrin responsiveness, were prepared using Grubbs' catalyst as the initiator. The presence of ferrocenecontaining monomers and hydrophilic norbornene monomers played crucial roles in maintaining the structure and enhancing the physical strength of the hydrogels. The hydrogels also exhibited responsive behavior to beta-CD solution due to the host-guest interaction. This study provides a new idea for the design of smart hydrogels.
Article
Chemistry, Physical
Paolo Canepa, Danijela Gregurec, Nara Liessi, Silvia Maria Cristina Rotondi, Sergio Enrique Moya, Enrico Millo, Maurizio Canepa, Ornella Cavalleri
Summary: Porous transition metal oxides were functionalized with amino acids to improve antibacterial properties. Two-step molecular deposition was used and investigated with AFM and XPS. The formation of monolayers was confirmed on flat titanium oxide thin films, and successful coupling with Fmoc-Leucine was observed through XPS analysis.
Article
Multidisciplinary Sciences
Patrick M. Perrigue, Agata Henschke, Bartosz F. Grzeskowiak, Lucja Przysiecka, Kaja Jaskot, Angelika Mielcarek, Emerson Coy, Sergio E. Moya
Summary: Understanding the interaction between nanoparticles and cells is crucial for designing more effective nanomedicines. This study investigates the biological fate of silica nanoparticles in senescent cells, which do not divide, using various methods including microscopy and flow cytometry. The results show that the nanoparticles readily enter the senescent cells and accumulate in the cytoplasm for a long time. This study lays the foundation for the development of NP-based tools for detecting and targeting senescent cells for therapeutic purposes.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Naixin Kang, Ruofan Shen, Baojun Li, Fangyu Fu, Bruno Espuche, Sergio Moya, Lionel Salmon, Jean-Luc Pozzo, Didier Astruc
Summary: The synthesized AuPd@ZIF-8-alloyed nanoparticles serve as an excellent nanocatalyst for the methanolysis reaction of aminoborane under visible light irradiation, producing H-2 at a high rate. The visible-light-induced acceleration is attributed to the Au plasmonic excitation provoking hot electron transfer from Au to Pd-substrate ensemble.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Qiangjun Ling, Xin Fan, Meijun Ling, Jiachang Liu, Li Zhao, Haibin Gu
Summary: In this study, a highly stretchable, strain-sensitive, and multi-environmental stable collagen-based conductive organohydrogel was successfully constructed by taking inspiration from natural skin. The organohydrogel exhibited excellent tensile strength, repeatable adhesion, self-healing, anti-freezing, moisturizing, and biocompatible properties. It also had good electrical conductivity and strain-sensitive properties, making it suitable for accurately monitoring large-scale motions of the human body.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Yue Liu, Fangyu Fu, Lionel Salmon, Bruno Espuche, Sergio Moya, Murielle Berlande, Jean-Luc Pozzo, Jean-Rene Hamon, Didier Astruc
Summary: A new type of catalyst support, involving the addition of metal ion precursors to core-shell ZIF-8@ZIF-67, was proposed and its performance exceeded that of nanocatalysts in ZIF-8 or ZIF-67. Under visible-light illumination, the optimized nanocatalysts achieved a turnover frequency of 430 h-1 for selective formic acid dehydrogenation. The superiority of ZIF-8@Pd2Ag1@ZIF-67 over other catalysts was confirmed in the benchmarking model of 4nitrophenol reduction, indicating the interest in this novel catalyst design.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Seyed Ehsan Alavi, Baptiste Martin, Yue Zan, Xinyu Yang, Mario Piedrahita-Bello, William Nicolazzi, Jean-Francois Ganghoffer, Lionel Salmon, Gabor Molnar, Azzedine Bousseksou
Summary: This study investigates the interplay between the thermomechanical and spin-crossover properties of stimuli-responsive polymer composites containing [Fe(NH2trz)3]SO4 and [Fe(Htrz)(trz)2]BF4 particles embedded in thermoplastic polyurethane and P(VDF-TrFE) matrices. The composites exhibit characteristic elastic softening and increased mechanical damping around the spin transition temperature, resulting from the significant spin state-volume strain coupling in the particles. The transformation strain and stress in the composites significantly increase and decrease, respectively, in soft matrices, as explained by micromechanical simulations. These findings offer a fundamental understanding and quantitative guidelines for the design of spin-crossover polymer composites for mechanical transducer applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Damian Paliwoda, Laure Vendier, Livia Getzner, Frederico Alabarse, Davide Comboni, Baptiste Martin, Seyed Ehsan Alavi, Mario Piedrahita Bello, Lionel Salmon, William Nicolazzi, Gabor Molnar, Azzedine Bousseksou
Summary: Two benchmark Fe(II)-triazole spin-crossover compounds, [Fe(Htrz)2trz]BF4 (1) and [Fe(NH2trz)3]SO4 (2), were investigated using various techniques to evaluate their transformation strain, compressibility, and anisotropy. Elastic softening and mechanical damping were observed during the spin-crossover process in both compounds, suggesting a coupling between spin state and lattice strain. The elastic potential energy, stored elastic work, and frictional work were assessed, providing important insights for understanding the behavior of this compound family and guiding their technological applications.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Engineering, Chemical
Jialu Shen, Haibin Gu, Zhen He, Wei Lin
Summary: Using natural wattle bark tannin, stable and nontoxic fluorescent carbon quantum dots (CQDs) were fabricated. These CQDs were applied for heavy metal ion determination, bio-imaging, and fluorescent ink applications. The CQDs showed fast and sensitive response to Cr6+ and demonstrated great potential in bio-imaging and information encryption applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Bin Song, Zhijun Ren, Haibin Gu
Summary: A dual-network O-CMCS/PVA PBOC conductive hydrogel was designed and fabricated to overcome the fragility and single function of single-network hydrogels. The hydrogel combined a flexible O-PT/O-CMCS network with a rigid PVA-borax network, and carbon nanotubes were introduced to enhance toughness and conductivity. Its structural characteristics were investigated using various techniques, and its superb self-healing property and electrical conductivity were confirmed. The dual networks allowed the hydrogel to exhibit excellent stretchability and quick self-healing, making it a promising candidate for wearable sensor devices.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Lijun Zhang, Karl Ridier, Oleksandr Ye. Horniichuk, Steïphane Calvez, Lionel Salmon, Gaïbor Molnar, Azzedine Bousseksou
Summary: The formation of hybrid light-matter states, which allows control of quantum-mechanical states and manipulation of molecular materials, has been observed in switchable strong light-matter coupling involving bistable spin-crossover molecules. The thermally induced switching between low-spin and high-spin states of these molecules enables fine control of the light-matter hybridization strength, offering the possibility of reversible switching between ultrastrong- and weak-coupling regimes within a single photonic structure. This work demonstrates the potential of spin-crossover molecular compounds in the development of tunable polaritonic devices and polaritonic chemistry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Automation & Control Systems
Yue Zan, Mario Piedrahita-Bello, Seyed E. Alavi, Gabor Molnar, Bertrand Tondu, Lionel Salmon, Azzedine Bousseksou
Summary: The paper presents a bilayer bending cantilever actuator made of thermoplastic polyurethane (TPU) with embedded [Fe(NH(2)trz)(3)](SO4) molecular spin-crossover (SCO) particles. The actuator is capable of converting electrothermal input into mechanical response, and exhibits a curvature change of 0.11 mm^-1, a free transformation strain of 1.6%, and an effective work density of 1.25 mJ cm^-3. The actuator also demonstrates a fast response time and robustness in closed-loop experiments.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xinyu Yang, Alejandro Enriquez-Cabrera, Dorian Toha, Yannick Coppel, Lionel Salmon, Azzedine Bousseksou
Summary: A pure mixed-anion Fe(NH(2)trz)(3)(BF4)(SiF6)(0.5) spin crossover complex is obtained through a solid-liquid post synthetic modification approach from the Fe(NH(2)trz)(3)(BF4)(2) parent complex. Highly crystalline powder samples incorporating homogeneous micrometric (1 & mu;m long) rod-shaped particles can be achieved using this method. This compound exhibits an abrupt spin crossover behavior with a narrow (10 K) hysteresis loop centered just above room temperature (320 K), making it highly interesting for integration into various application devices.
DALTON TRANSACTIONS
(2023)
