Review
Chemistry, Inorganic & Nuclear
Akinobu Nakada, Takeshi Matsumoto, Ho-Chol Chang
Summary: The hybridization of functional ligands with metal atoms is a central issue in the design of reactions and catalysts based on metal complexes. Recent studies have shown that redox-active/non-innocent ligands can play various roles, such as spectators, moderators, electron/H+/0/- suppliers/poolers, cooperators, or actors, in reactions. This review highlights stoichiometric or catalytic reactions driven by substituted ethylenes and dithiolenes, as well as six-membered ligands like catecholato, benezendithiolato, aminophenolato, and o-phenelyenediamine derivatives. The chemically, electrochemically, and photochemically induced lability of these ligands is expected to provide a rich platform for useful bond-activation and bond-formation processes.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Juan Li, Tianzhao Hu, Yuzuo Wang, Shaorui Chen, Chunzhong Wang, Dong Zhang, Zhenhua Sun, Feng Li
Summary: This study reports a chlorine-based redox electrochemical capacitor in an ionic liquid electrolyte, which uses activated carbon as the working electrode to achieve high-energy storage. It provides a solution for new types of high-energy electrochemical capacitors.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Bushra Begum, Salma Bilal, Anwar ul Haq Ali Shah, Philipp Roese
Summary: Polybenzopyrrole synthesized in surfactant-supported acidic medium showed significantly enhanced thermal stability and electrochemical properties, with a maximum specific capacitance of 166.0 +/- 2.0 F g(-1) and excellent cycle stability of 87% after 5000 cycles at a current density of 1 A g(-1). The results suggest that polybenzopyrroles are competitive electrode materials for next-generation Faradaic supercapacitors, with high-power density and energy density. The findings of this study can also be easily applied to other systems for the synthesis of advanced hybrid/composite Pbp-based electrode materials.
Article
Polymer Science
Yanlin Shi, Chanaka J. Mudugamuwa, Thidas N. Abeysinghe, Yasser S. M. Alotaibi, Michael J. Monteiro, Justin M. Chalker, Jodie L. Lutkenhaus, Zhongfan Jia
Summary: This study highlights the importance of charge effects on the electrochemical behavior of water-soluble redox polymers, showing that charges dictate the diffusion coefficients and charge transfer kinetics of these materials at different pH levels. The results suggest that electrostatic interactions between charged segments can greatly enhance the electron self-exchange reaction rate in redox-induced polymer films.
Article
Polymer Science
Kan Hatakeyama-Sato, Hisato Wakamatsu, Satoshi Matsumoto, Karin Sadakuni, Koji Matsuoka, Tomomi Nagatsuka, Kenichi Oyaizu
Summary: A poly(ethylene sulfide) backbone is used as the main chain in a radical polymer, synthesized through anionic ring-opening polymerization of an episulfide monomer with TEMPO. This new polythioether exhibits a lower glass transition temperature and significantly higher solid-state ionic conductivity compared to traditional poly(ethylene oxide) backbones. Additionally, it improves the charge/discharge properties of a cathode in solid-state lithium-ion batteries.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Nianjun Yang, Siyu Yu, Wenjun Zhang, Hui-Ming Cheng, Patrice Simon, Xin Jiang
Summary: This study introduces a method to improve the energy density of electrochemical capacitors (ECs) by using confined soluble redox electrolytes and porous electrodes. The method utilizes the diffusion-controlled faradaic processes of confined redox electrolytes at the surface of a porous electrode, combining the high power densities of ECs and high energy densities of batteries. Significant progress has been made in this field, and strategies to improve performance are highlighted.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Applied
Ting Ma, Alexandra D. Easley, Ratul Mitra Thakur, Khirabdhi T. Mohanty, Chen Wang, Jodie L. Lutkenhaus
Summary: The safe and environmentally friendly storage of electric energy has become increasingly important for modern technology-based societies. With future pressures predicted for batteries containing strategic metals, there is growing interest in metal-free electrode materials. Among these materials, nonconjugated redox-active polymers (NC-RAPs) have advantages in terms of cost-effectiveness, processability, electrochemical properties, and tunability for different battery chemistries. This review summarizes the latest research on the mechanisms of redox kinetics, molecular design, synthesis, and application of NC-RAPs in electrochemical energy storage and conversion, and highlights future promising areas for designer NC-RAPs in both fundamental and applied fields.
ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Bruno T. Luppi, Abhishek Muralidharan, Nils Ostermann, I. T. Cheong, Michael J. Ferguson, Inke Siewert, Eric Rivard
Summary: The study successfully prepared functionalized polyacetylenes through a groundbreaking ring-opening metathesis polymerization method, which exhibit good solubility, optical properties, and excellent air stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Mehmet Girayhan Say, Mary J. Donahue, Renee Kroon, Magnus Berggren, Isak Engquist
Summary: Demonstrated is an approach for the fabrication of on-chip, ultraflexible electrochemical capacitors, which are essential for advances in organic electronics. By utilizing two different electroactive conjugated polymers, finger electrodes are patterned for an ultraflexible energy storage technology. The miniaturized devices show excellent mechanical durability and robust operational performance at a bending radius of 6.5 mm.
ORGANIC ELECTRONICS
(2023)
Article
Chemistry, Physical
Folkert de Vries, Edwin Otten
Summary: This article describes the redox-switching of a formazanate zinc catalyst in ring-opening polymerization of lactide. The catalytic activity can be modulated by reversible reduction/oxidation chemistry at a purely organic fragment, achieved by using a redox-active ligand bound to an inert metal ion (Zn2+). Kinetic and spectroscopic studies, along with mass spectrometry analysis of the catalysis mixture, provide insights into the nature of the active species and the initiation of lactide ring-opening polymerization. The mechanistic data highlights the crucial role of the redox-active ligand and offers an explanation for the formation of cyclic polymer.
Article
Chemistry, Multidisciplinary
Wei Zhao, Yanfeng Lv, Ji Li, Zihao Feng, Yonghao Ni, Nikos Hadjichristidis
Summary: Functionalized polypeptides have gained significant interest in various fields due to their tunable physicochemical characteristics, and developing strategies to produce them without metallic contaminants is crucial for applications in high-value and sensitive domains. A highly efficient strategy combining Michael reaction with hydrogen-bonding organocatalytic ROP has been developed to access site-specific functionalized polypeptides with predesigned molecular weights and low polydispersities. This metal-free synthetic process offers high activity and selectivity at room temperature for preparing a library of chain-end and chain-middle functionalized polypeptides.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Yufeng An, Zhiwei Li, Yao Sun, Zhijie Chen, Jiangmin Jiang, Hui Dou, Xiaogang Zhang
Summary: This study demonstrates a unique device that achieves high value-added conversion of low-grade heat by introducing redox-active organic compounds onto the surface of N-doped hollow carbon nanofibers. The device shows high specific capacitance and outstanding rate capability, as well as high energy density and maximum power density. The thermally chargeable proton capacitors exhibit a surprisingly high Seebeck coefficient and power factor, achieving a satisfying open-circuit voltage.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Polymer Science
Timothy Ponrathnam, Isha Behere, Surendra Ponrathnam, Ganesh Ingavle
Summary: Open porous polymeric materials have gained popularity due to their exceptional properties and applications in various fields. This study developed a two-stage approach to create networked, crosslinked poly(2-hydroxyethyl methacrylate-co-N,N'-methylenebisacrylamide) HEMA-MBA beads. The effects of different factors on pore architecture and surface area were evaluated, and a new protocol for synthesizing HEMA-MBA monoliths was developed. The study provides insights into the morphology of porous polymeric materials and their potential applications in the biomedical field.
POLYMER INTERNATIONAL
(2023)
Review
Nanoscience & Nanotechnology
Giulio Calcagno, Brian Evanko, Galen D. Stucky, Elisabet Ahlberg, Seung Joon Yoo, Anders E. C. Palmqvist
Summary: Compared to traditional electric double-layer capacitors, redox-enhanced electrochemical capacitors show higher energy density and more stable power output. This study aims to understand the electrochemical mechanisms of the aqueous pentyl viologen/bromide dual redox system at the interface of ordered mesoporous carbon and improve device performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biochemistry & Molecular Biology
Izabela Kurowska, Karolina H. Markiewicz, Katarzyna Niemirowicz-Laskowska, Mathias Destarac, Przemyslaw Wielgat, Iwona Misztalewska-Turkowicz, Pawel Misiak, Halina Car, Agnieszka Z. Wilczewska
Summary: This study reports on the formation of drug delivery systems using thermoresponsive block copolymers containing lipid-based segments. Two acrylate monomers derived from palmitic- or oleic-acid-based diacylglycerols were synthesized and polymerized using the RAFT method. The resulting amphiphilic block copolymers formed polymeric nanoparticles, which showed cytocompatibility with normal cells and increased cytotoxicity and apoptosis or necrosis induction in breast cancer cells compared to the free drug.
Article
Electrochemistry
Valentina Perazzolo, Emilia Gradzka, Christian Durante, Roberto Pilot, Nicola Vicentini, Gian Andrea Rizzi, Gaetano Granozzi, Armando Gennaro
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Physical
R. Brandiele, C. Durante, E. Gradzka, G. A. Rizzi, J. Zheng, D. Badocco, P. Centomo, P. Pastore, G. Granozzi, A. Gennaro
JOURNAL OF MATERIALS CHEMISTRY A
(2016)
Article
Electrochemistry
Ewa Brancewicz, Emilia Gradzka, Anna Basa, Krzysztof Winkler
ELECTROCHIMICA ACTA
(2014)
Article
Electrochemistry
Krzysztof Winkler, Emilia Gradzka, Alberto Picon Marin, Tadeusz Krogulec
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2013)
Article
Electrochemistry
Ewa Brancewicz, Emilia Gradzka, Agnieszka Z. Wilczewska, Krzysztof Winkler
Article
Materials Science, Multidisciplinary
Emilia Gradzka, Patrycja Makowska, Krzysztof Winkler
Article
Materials Science, Multidisciplinary
Emilia Gradzka, Jakub Goclon, Sushanta K. Das, Alina Dubis, Krzysztof Winkler, Francis D'Souza
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2019)
Review
Chemistry, Physical
Emilia Gradzka, Monika Wysocka-Zolopa, Krzysztof Winkler
ADVANCED ENERGY MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Emilia Gradzka, Piotr Dluzewski, Izabela Wigda, Monika Wysocka-Zolopa, Krzysztof Winkler
Summary: The electrochemical behavior of the ternary composite is influenced by the relative amounts of polypyrrole, multiwalled carbon nanotubes, and tetra(n-octyl)ammonium bromide, resulting in enhanced capacitance and stability.
Article
Electrochemistry
Joanna Breczko, Barbara Grzeskiewicz, Emilia Gradzka, Diana M. Bobrowska, Anna Basa, Jakub Goclon, Krzysztof Winkler
Summary: The study synthesized s-PANI-NTs decorated with GQDs and demonstrated their potential application as electrode materials in supercapacitors. The modification of s-PANI-NTs with GQDs improved the electrochemical properties of the synthesized material, leading to a higher specific surface area and specific capacitance of the composite material.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Applied
Monika Wysocka-Zolopa, Izabela Zablocka, Emilia Gradzka, Jakub Goclon, Krzysztof Winkler
Summary: A nanocomposite of polypyrrole@MCM-41 was prepared by polymerizing pyrrole inside silica nanopores, resulting in stable electrochemical activity at positive potentials. Characterization was done using various techniques, and the composite's electrochemical properties were compared with DFT calculations.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Emilia Gradzka, Gian Andrea Rizzi, Magdalena Bonarowska, Piotr Dluzewski
Summary: This work focuses on the chemical formation of composites based on various carbon nanostructures and their electrochemical properties and capacitance performance. The type of nanostructures influences the morphology of the synthesized polyazulene and the relationship between nanostructure type, morphology, and electrochemical properties was studied. Specific capacitance values varied among different composites, with the SWCNT/PAZ composite exhibiting the highest capacitance and the SLGO/PAZ composite showing improvement through thermal treatment.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Electrochemistry
Monika Wysocka-Zolopa, Joanna Breczko, Emilia Gradzka, Anna Basa, Jakub Goclon, Alina Dubis, Krzysztof Winkler
Summary: A new approach to forming composites of carbon nanotubes and polypyrrole is proposed, utilizing oxidized multi-walled carbon nanotubes as oxidation agents in polymerization. Different electrochemical properties are exhibited by the various forms of the polypyrrole phase, with PPy deposited directly onto the carbon nanotube surface showing oxidation at less positive potentials compared to PPy in the nanotube network pores. Incorporation of anions into oxidized MWCNT defects also acts as dopants for PPy.
Article
Electrochemistry
Emilia GrAdzka, Joanna Breczko, Magdalena Bonarowska, Monika Wysocka-Zolopa, Anna Basa, Krzysztof Winkler
Summary: This work presents a practical and facile synthesis method of oxidized multiwalled carbon nanotube/polyazulene (ox-MWCNT/PAZ) composites. The properties and morphology of these composites depend on the synthesis conditions. The composite material exhibits higher thermal stability and better electrochemical performance compared to pure polymeric materials.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
