Article
Polymer Science
Chulu Zhou, Cuiping Hou, Lijie Wang, Wei Chen, Jianhua Cheng
Summary: In this study, norbornene macromonomers with PS or PtBA side chains were synthesized using a combination of ATRP and click reactions. The resulting linear and star-shaped brush block copolymers showed the ability to self-assemble into spherical micelles in solution. Interestingly, star diblock copolymers exhibited more stable properties compared to linear analogues, with less sensitivity to changes in composition.
Review
Chemistry, Applied
Kamal M. Dawood, Kotohiro Nomura
Summary: This review article summarizes the effects of different catalysts on Z-selective olefin metathesis reactions and the essential roles of ligand modifications in achieving stereospecific reactions.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Polymer Science
Wei Wen, Aihua Chen
Summary: By intrachain photo-cross-linking of azobenzene-containing amphiphilic linear block copolymer precursors, photoresponsive liquid crystalline SCJNPs were constructed and their self-assembly behavior in solution was investigated. Non-spherical assemblies were obtained, including lamellae and tubes, under the effect of the liquid crystal driving force. Additionally, photoinduced morphological transformations were observed for assemblies with different azobenzene contents.
Article
Chemistry, Inorganic & Nuclear
Julian Zinke, Clemens Bruhn, Ulrich Siemeling
Summary: This study reports the synthesis and structural characterization of novel half-sandwich iron (II) dihalido complexes that exhibit high thermal stability. The compounds were successfully synthesized and their structures were determined using single-crystal X-ray diffraction. Further investigation revealed the synthetic potential of these compounds in FeCp* half-sandwich chemistry.
Article
Biochemistry & Molecular Biology
Prinessa Chellan, Vicky M. Avery, Sandra Duffy, Kirkwood M. Land, Christina C. Tam, Jong H. Kim, Luisa W. Cheng, Isolda Romero-Canelon, Peter J. Sadler
Summary: The reaction of dihydroartemisinin (DHA) with 4-methyl-4'-carboxy-2,2'-bipyridine yielded a novel ester derivative L1. Subsequent synthesis of organometallic half-sandwich complexes with pentamethylcyclopentadienyl, tetramethylphenylcyclopentadienyl, or tetramethylbiphenylcyclopentadienyl ligands exhibited potent antiplasmodial and anticancer activities, with iridium complex 3 emerging as a promising candidate for further studies.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2021)
Article
Chemistry, Physical
Heiko Schratzberger, Berthold Stoeger, Luis F. Veiros, Karl Kirchner
Summary: In this study, two stable Fe(II) alkyl complexes were successfully synthesized and their catalytic performance in transfer hydrogenation reactions was investigated. The results showed that these complexes exhibited good activity and selectivity for hydrogenation of various alkynes. Through both experimental and theoretical investigations, the researchers also revealed the reaction mechanism.
Article
Chemistry, Inorganic & Nuclear
Dana Josa, David Aguila, Pere Fontova, Vanessa Soto-Cerrato, Piedad Herrera-Ramirez, Laia Rafols, Arnald Grabulosa, Patrick Gamez
Summary: Five metal-arene complexes and nine cyclometalated half-sandwich complexes were synthesized, characterized, and evaluated for cytotoxicity against human cancer cells. The complexes showed notable cytotoxic properties, particularly against lung adenocarcinoma cells. One of the complexes also exhibited significant toxic effects on other cell lines. Furthermore, the study identified a complex that impacted the cell cycle of lung adenocarcinoma cells.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Organic
Lauren N. Mendelsohn, Connor S. MacNeil, Madison R. Esposito, Tyler P. Pabst, David K. Leahy, Ian W. Davies, Paul J. Chirik
Summary: The cobalt-catalyzed asymmetric hydrogenation of indazole-containing enamides relevant to the synthesis of Zavegepant, a CGRP receptor antagonist, which is approved for the treatment of migraines, is described. Both neutral and cationic bis(phosphine)cobalt complexes were efficient precatalysts, providing excellent yield and enantioselectivities for related substrates, with key reactivity differences observed. The hydrogenation of the indazole-containing enamide was successfully scaled up to 20 g.
Article
Chemistry, Multidisciplinary
Tomoyuki Mochida
Summary: Ionic liquids (ILs) with cationic metal complexes have unique physical properties and chemical reactivities. This review focuses on the molecular design, physical properties, and reactivities of organometallic ILs containing sandwich or half-sandwich complexes. It mainly covers stimuli-responsive ILs that can change their magnetic properties, solvent polarities, colors, or structures by external fields or reaction with coordinating molecules.
Article
Chemistry, Inorganic & Nuclear
Hui Liu, Suting Xu, Xiaochao Shi
Summary: The synthesis of half-sandwich chromium(III) complexes bearing ligands and their catalytic activities for ethylene polymerization to produce high molecular weight polyethylene were investigated in this study.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Mengyao Feng, Fuyuan Liu, Ningwen Yang, Jiayao Yu, Wei Yang, David James Young, Xiang-Qian Cao, Hong -Xi Li, Zhi-Gang Ren
Summary: A heterobimetallic coordination polymer [Au-4(dppmt)(4)(AgCl)2(]) n (1) with an in situ generated P-S ligand (dppmtH) was synthesized. The structure of 1 contains a helical Au-Au chain connected by [Au(2()dppmt)(2)] dimers. Upon excitation at 343 nm, 1 exhibited cyan phosphorescent emission at QY = 22.3% and t = 0.78 μs. Coordination polymer 1 exhibited a rapid, selective, reversible, and visible vaporchromic response on exposure to methanol vapor, with its emission shifting to a more intense green at QY = 46.8% and t = 1.24 μs.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Medicinal
Mengyao Feng, Fuyuan Liu, Ningwen Yang, Jiayao Yu, Wei Yang, David James Young, Xiang-Qian Cao, Hong-Xi Li, Zhi-Gang Ren
Summary: A heterobimetallic coordination polymer [Au4(dppmt)4(AgCl)2]n (1) incorporating an in situ generated P-S ligand (dppmtH) was synthesized. The structure of 1 contains a one-dimensional helical Au-Au chain. Coordination polymer 1 exhibited a rapid, selective, reversible, and visible vapor chromic response on exposure to methanol (MeOH) vapor.
ACS MEDICINAL CHEMISTRY LETTERS
(2023)
Article
Polymer Science
Xin Wang, Yichen Sun, Xing-Qi Yao, Yan Xu, Jianbo Wang
Summary: A simple and efficient strategy was developed to access diverse end-functionalized polymers using diazoacetates as a new terminating agent in living ring-opening metathesis polymerization. This strategy allows for the rapid introduction of specific functionalities at the chain end and enables various postpolymerization modifications.
Article
Chemistry, Inorganic & Nuclear
Marianna Pioli, Cecilia Loffi, Paolo Pio Mazzeo, Alessia Bacchi, Paolo Pelagatti
Summary: Two different N-substituted naphthalimide ligands have been synthesized and reacted with a cationic organometallic fragment, showing different coordination behaviors. One ligand forms a sandwich complex with six coordination sites, while the other forms two isomeric complexes with different stabilities.
INORGANICA CHIMICA ACTA
(2021)
Article
Polymer Science
Xin Wang, Yichen Sun, Xing-Qi Yao, Yan Xu, Jianbo Wang
Summary: In this study, a simple and efficient strategy using diazoacetates as terminating agents was reported to access diverse end-functionalized polymers from a living ring-opening metathesis polymerization process. The chain-end ruthenium carbenes react with diazoacetates to form a C=C bond, leading to the rapid construction of a unique alpha,beta-unsaturated carbonyl motif at more than 95% of the chain end within 5 minutes. Various easily accessible and diversely substituted diazoacetates could be employed to introduce additional useful functionalities at the polymer chain end. Diverse postpolymerization modifications, including Michael addition, click reaction, and chain extension, were also demonstrated.
Article
Materials Science, Multidisciplinary
Fangfei Liu, Xiong Liu, Haibin Gu
Summary: This study introduced multiple dynamic crosslinking strategies to construct a triple-network hydrogel with excellent properties, including good self-healing ability, mechanical strength, stretchability, biocompatibility, conductivity, adhesion, and remodeling capabilities. The resulting hydrogel can be made into a high sensitivity strain sensor and has the ability to monitor human movements.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Polymer Science
Jiachang Liu, Song Bao, Qiangjun Ling, Xin Fan, Haibin Gu
Summary: This study demonstrates the fast fabrication of a multifunctional conductive hydrogel using a dynamic redox system based on Tara tannin and Fe3+. The hydrogel exhibits good bio-friendliness, mechanical properties, self-healing ability, and conductivity, making it a promising candidate for conductive strain sensors. The hydrogel can accurately capture various motion signals and monitor vocal vibrations, showing its potential in wearable electronic devices.
Article
Nanoscience & Nanotechnology
Qiangjun Ling, Wentao Liu, Jiachang Liu, Li Zhao, Zhijun Ren, Haibin Gu
Summary: This research successfully developed a highly stretchable, sensitive, and multifunctional dual-network hydrogel sensor with good mechanical strength, adhesive properties, and self-healing capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Xin Fan, Li Zhao, Qiangjun Ling, Haibin Gu
Summary: Hydrogel-based flexible sensors have great application potential in various fields, but integrating good mechanical performance, sensitivity, self-adhesion, fatigue resistance, antibacterial activity, and recyclability remains a challenge. In this study, a novel polyoxymethylene cross-linking agent was synthesized and a double network hydrogel was prepared. The hydrogel exhibited excellent mechanical properties, fatigue resistance, conductivity, sensitivity, antibacterial activity, and recyclability. Additionally, a low-cost plant polyphenol was used to achieve good adhesion and repeated adhesion of the hydrogel.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Polymer Science
Xin Fan, Jianhua Geng, Yanlan Wang, Haibin Gu
Summary: Hydrogel-based flexible sensors with multiple dynamic crosslinking have been successfully fabricated for various applications. The gelatin-based dual-network hydrogel sensor possesses favorable mechanical property, biocompatibility, self-healing property, sensitivity and self-adhesion. The addition of carbon nanotubes improves its conductivity and mechanical property. This work presents a new strategy for the construction of multifunctional wearable flexible sensors using multiple dynamically cross linked biomass-based self-healing hydrogels.
Article
Polymer Science
Wenjuan Wang, Catia Ornelas, Abdou K. Diallo, Christophe Deraedt, Yanlan Wang, Feng Lu, Haibin Gu, Didier Astruc
Summary: This mini-review presents the research results of our group in the field of nanocatalysis using ferrocene-containing macromolecular supports, including arene-cored and Pd-nanoparticle-cored dendrimers and dendronized polymers, obtained in the past 15 years. The nanocatalysis with Pd and Au nanoparticles stabilized by these metallomacromolecules has exhibited excellent catalyst efficiency and recyclability in C-C cross coupling reactions, olefin hydrogenation, and 4-nitrophenol reduction reactions. The redox activity and tridimensionality of the ferrocene group in these dendritic supports play a crucial role in preventing the escape of nanoparticles.
Article
Nanoscience & Nanotechnology
Ze Wang, Haibin Gu, An Yan, Pingan Jiang, Hao Ma, Jiandong Sheng, Wentai Zhang
Summary: Haloxylon ammodendron is a key species in the desert area of Junggar Basin, and it plays a crucial role in biodiversity protection and regional ecological balance. The soil moisture and nutrient content in the root zone of seedlings exhibit obvious temporal and spatial variations.
JOURNAL OF NANOMATERIALS
(2022)
Article
Polymer Science
Xin Fan, Li Zhao, Qiangjun Ling, Jiachang Liu, Haibin Gu
Summary: In this study, a dual-network conductive hydrogel with high stretchability, self-healing, antibacterial, and good sensing properties was successfully prepared. The hydrogel was used to fabricate a flexible strain sensor for monitoring human motions and maintained good performance at low or room temperature.
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
Agronomy
Ze Wang, Haibin Gu, Qingmin Meng, Cai Ren, Pingan Jiang, Hao Ma, Jiandong Sheng, An Yan, Wentai Zhang, Yanli Luo
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
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
Polymer Science
Paige A. Shaw, Maxime Klausen, Mark Bradley
Summary: A light-responsive polymer capable of controlled release of camptothecin and generation of reactive oxygen species (ROS) was developed, which exhibited high cancer cell killing activity through both camptothecin release and ROS generation.
Article
Polymer Science
Donghui Zhang, Shiqi Liu, Zhihao Cai, Weizhe Luo, Guojian Liu, Runhui Liu
Summary: A straightforward and efficient method for synthesizing NPC monomers has been developed in this study, which enhances the availability of NPC monomers and facilitates the synthesis of polypeptides.
