Article
Polymer Science
Maksym Odnoroh, Jean-Daniel Marty, Valerie Bourdon, Olivier Coutelier, Mathias Destarac
Summary: RAFT polymerization enables the synthesis of (co)polymers with primary benzene sulfonamide groups, using either an acrylamido sulfonamide monomer or a sulfonamide-functional trithiocarbonate RAFT agent. This research expands the possibilities for creating pH-responsive block copolymers and functional polymeric vectors with targeting properties for biomedical applications.
Article
Polymer Science
Mohamed Naguib, Kate L. Nixon, Daniel J. Keddie
Summary: This study reports the synthesis of two novel trithiocarbonate RAFT agents for bottlebrush synthesis via ROMP grafting-through polymerization. The correlation between the monomer type, degree of polymerization, and RAFT agent structure has been investigated. The results reveal that the properties of the resulting polymers are influenced by the monomer type, degree of polymerization, and RAFT agent structure.
Article
Polymer Science
James B. Young, Jared Bowman, Cabell B. Eades, Alexander J. Wong, Brent S. Sumerlin
Summary: Controlled radical polymerization techniques allow for the synthesis of polymers with specific molecular weights and architectures. In this study, the role of light in triggering thermal depolymerization of polymers synthesized through reversible-addition-fragmentation chain-transfer (RAFT) polymerization was investigated. By targeting specific electronic transitions, the depolymerization efficiency was enhanced.
Article
Nanoscience & Nanotechnology
Yen Theng Cheng, Qingbo Xia, Hongwei Liu, Marcello B. Solomon, Emma R. L. Brisson, Lewis D. Blackman, Chris D. Ling, Markus Mullner
Summary: We successfully demonstrated the synthesis of mesoporous carbon-coated anatase nanostructures using a modular approach. Through the combination of polymerization-induced self-assembly (PISA) and reversible addition-fragmentation chain-transfer (RAFT) dispersion polymerization, we fabricated uniform core-shell polymeric nanoreactors with tunable morphologies. The resulting TiO2/C materials possessed a porous structure with large specific surface areas (>85 m2/g) and various carbon contents (20-30 wt %). As anode components in lithium-ion batteries, these TiO2/C nanomaterials showed improved cycling stability, facilitated high overall capacities, and minimized capacity loss compared to their sans carbon counterparts and commercial anatase analogues.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Nanoscience & Nanotechnology
Jordan H. Swisher, Liban Jibril, Sarah Hurst Petrosko, Chad A. Mirkin
Summary: Nanoreactors are promising tools for synthesizing nanoparticles by isolating chemical precursors within confined spaces. They can be prepared by solution-based or substrate-confined strategies. Current research has expanded the focus beyond pure synthesis to creating large and complex libraries of materials and exploring the materials genome through high-throughput screening techniques.
NATURE REVIEWS MATERIALS
(2022)
Article
Polymer Science
Hien The Ho, Veronique Montembault, Sagrario Pascual, Laurent Fontaine, Didier Gigmes, Trang N. T. Phan
Summary: A novel alkyl iodide compound was synthesized and used as an initiator for polymerization reactions. The new initiator showed high efficiency in producing functional polymers through thermal and photochemical activation.
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, Multidisciplinary
Kostas Parkatzidis, Nghia P. Truong, Manon Rolland, Viviane Lutz-Bueno, Emily H. Pilkington, Raffaele Mezzenga, Athina Anastasaki
Summary: This study presents a rapid and versatile strategy for morphological transformation of nanostructured materials, without altering the chemical structure of the constituent polymers, and applicable to nanoparticles produced by different synthetic techniques.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Matylda Szewczyk-Lagodzinska, Dawid Oleksiuk, Sebastian Kowalczyk, Anna Czajka, Anna Duzynska, Anna Lapinska, Joanna Ryszkowska, Piotr Dziewit, Jacek Janiszewski, Andrzej Plichta
Summary: In this study, first and second generation multifunctional recycling additives were synthesized and applied to polylactide extrusion melting. The first generation additives increased the melt viscosity of polylactide, stabilized material properties, and enhanced impact strength, while the second generation additives showed worse properties when the epoxide ring opening rate exceeded 8%, but managed to suppress the UV degradation of PLA blend plates.
Article
Chemistry, Multidisciplinary
Omar Rifaie-Graham, Nikolas F. B. Galensowske, Charlie Dean, Jonas Pollard, Sandor Balog, Micael G. Gouveia, Mohamed Chami, Antoine Vian, Esther Amstad, Marco Lattuada, Nico Bruns
Summary: Dinoflagellates emit light in response to water movement, inspiring a method to transfer shear-induced permeabilization concept to polymer-based nanoreactors. The membrane of polymersomes can be controlled to switch between impermeable and semipermeable states through shear forces, allowing for on-demand release of payload and activation of biocatalytic reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Evgeniia Salomatina, Aleksander Pikulin, Dmitry Semenov, Ivan Grishin, Natalia Kirillova, Larisa Smirnova
Summary: A new method of block-copolymer synthesis using a multifunctional Si-organic chain transfer agent is presented. The method allows for a wider choice of monomers and is applicable for obtaining block copolymers with wide molecular weight distribution. The synthesis can be completed in a few hours at moderate temperatures and does not involve sulfur-based or metalorganic compounds, making it suitable for various applications. The resulting polymer molecular weight can be controlled by adjusting the concentrations of the initiator and Si-Cl-based agent.
Article
Multidisciplinary Sciences
Lei Tao, John Byrnes, Vikas Varshney, Ying Li
Summary: Establishing the structure-property relationship is crucial for molecular design of copolymers. Machine learning models that consider both chemical composition and sequence distribution of monomers, and have the ability to process different types of copolymers, are needed. In this study, we propose four different machine learning models and find that a recurrent neural network (RNN) architecture that processes monomer sequence information in both forward and backward directions performs better for copolymers.
Article
Polymer Science
Albert Prause, Michelle Hechenbichler, Robert F. Schmidt, Miriam Simon, Sylvain Prevost, Leide P. Cavalcanti, Yeshayahu Talmon, Andre Laschewsky, Michael Gradzielski
Summary: Temperature control of rheological properties of aqueous solutions can be achieved by the addition of temperature-responsive amphiphilic polymers. In this study, three sets of acrylamide-based block copolymers with different architectures were explored, and their viscosities showed a substantial increase with increasing temperature. The changes in rheological properties were correlated with the mesoscopic organization of the systems.
Article
Polymer Science
Nikoletta Roka, Olga Kokkorogianni, Philippos Kontoes-Georgoudakis, Ioannis Choinopoulos, Marinos Pitsikalis
Summary: Recent advances in the controlled RAFT polymerization of complex macromolecular architectures based on PNVP are summarized in this review, with a focus on the synthesis of statistical copolymers, block copolymers, star polymers and copolymers, graft copolymers, and more complex architectures. The advantages and limitations of the synthetic methodologies are discussed in detail.
Article
Polymer Science
Min Su, Yu-Jing Sheng, Yu-Jiao Chen, Tao Li, Quan-Xi Shi, Hang Xiao, Meng-Qin Pu, Hongli Bao, Wen-Ming Wan
Summary: A versatile living polymerization method is reported, which allows the precise synthesis of narrow distributed polystyrenes through the introduction of a well-established all-in-one covalent-anionic-radical Barbier strategy, using a wide variety of organohalides as initiators under mild conditions.
Article
Chemistry, Multidisciplinary
Bei Liu, Yijiang Liu, Hongbiao Chen, Mei Yang, Huaming Li
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
Mei Yang, Xuan Long, Huaming Li, Hongbiao Chen, Pingle Liu
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
Mengran Wang, Bei Liu, Hongbiao Chen, Duanguang Yang, Huaming Li
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
Ting Zeng, Amin Deng, Duanguang Yang, Huaming Li, Chenze Qi, Yong Gao
Article
Chemistry, Multidisciplinary
Yijiang Liu, Zewei Wang, Shuang Liang, Zili Li, Mingyue Zhang, Huaming Li, Zhiqun Lin
Article
Chemistry, Multidisciplinary
Teng Wang, Chao Yang, Yijiang Liu, Mei Yang, Xufeng Li, Yan He, Huaming Li, Hongbiao Chen, Zhiqun Lin
Article
Chemistry, Multidisciplinary
Xufeng Li, Yijiang Liu, Hongbiao Chen, Mei Yang, Duanguang Yang, Huaming Li, Zhiqun Lin
Summary: The study successfully prepared the FeNi/N-LCN bifunctional electrocatalyst, which exhibited excellent activity and stability in zinc-air batteries. The battery assembled with this catalyst showed high specific capacity and peak power density, with the highest cycling stability among reported zinc-air batteries, allowing for repeated charging and discharging for long durations.
Article
Chemistry, Physical
Bei Liu, Hongbiao Chen, Mei Yang, Yijiang Liu, Huaming Li
Summary: The freestanding BNC-850 film electrode, fabricated with a hierarchical pore structure and high N/B contents, demonstrated high specific capacitance and excellent rate capability in an aqueous alkali electrolyte, as well as in flexible solid-state supercapacitors assembled with an alkali poly(vinyl alcohol) (PVA)-KOH gel electrolyte and a neutral sodium carboxymethyl cellulose (CMCNa)-Na2SO4 gel electrolyte, showing great potential for application in energy storage devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shiyu Yu, Bei Liu, Hongbiao Chen, Mei Yang, Yijiang Liu, Huaming Li
Summary: This study reports the synthesis of folic acid-derived N/B/O-codoped carbon nanoparticles and imidazolium-based gel polymer electrolyte for high energy density flexible solid-state supercapacitors. By optimizing the design of electrodes and electrolyte, high capacitance and energy density supercapacitors were achieved in alkaline electrolyte, showing promising potential for applications in flexible and wearable electronics.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Xiangyi Li, Yijiang Liu, Jikai Wen, Baoyu Qing, Mei Yang, Bei Liu, Hongbiao Chen, Huaming Li
Summary: In this study, a FeNi alloy nanoparticle-decorated N,S dual-doped carbon nanocomposite (FeNi/NS-C) was fabricated as a bifunctional electrocatalyst for Zn-air batteries. The FeNi/NS-C electrocatalyst exhibited comparable ORR activity to Pt/C (E1/2 = 0.83 V) and superior OER activity to IrO2 (Ej=10 = 1.585 V). The FeNi/NS-C-based Zn-air batteries displayed high power density and specific capacity, along with remarkable durability over 1000 h at 5 mA cm-2 and 70 h at 2 mA cm-2 in liquid and solid electrolytes, respectively. The high performance of FeNi/NS-C may be attributed to the synergistic effect of bimetallic alloy nanoparticles and the N,S dual-doped carbon matrix.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
Xufeng Li, Mei Yang, Hongbiao Chen, Yijiang Liu, Huaming Li
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
Article
Nanoscience & Nanotechnology
Chonglingyun Liao, Zhongshuai Liang, Bei Liu, Hongbiao Chen, Xueye Wang, Huaming Li
ACS APPLIED NANO MATERIALS
(2020)