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Zhang Q, Yan K, Zheng X, Liu Q, Han Y, Liu Z. Research progress of photo-crosslink hydrogels in ophthalmology: A comprehensive review focus on the applications. Mater Today Bio 2024; 26:101082. [PMID: 38774449 PMCID: PMC11107262 DOI: 10.1016/j.mtbio.2024.101082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/19/2024] [Accepted: 05/03/2024] [Indexed: 05/24/2024] Open
Abstract
Hydrogel presents a three-dimensional polymer network with high water content. Over the past decade, hydrogel has developed from static material to intelligent material with controllable response. Various stimuli are involved in the formation of hydrogel network, among which photo-stimulation has attracted wide attention due to the advantages of controllable conditions, which has a good application prospect in the treatment of ophthalmic diseases. This paper reviews the application of photo-crosslink hydrogels in ophthalmology, focusing on the types of photo-crosslink hydrogels and their applications in ophthalmology, including drug delivery, tissue engineering and 3D printing. In addition, the limitations and future prospects of photo-crosslink hydrogels are also provided.
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Affiliation(s)
- Qinghe Zhang
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Ke Yan
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Xiaoqin Zheng
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Qiuping Liu
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Yi Han
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Zuguo Liu
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
- Xiamen University Affiliated Xiamen Eye Center, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Fujian Engineering and Research Center of Eye Regenerative Medicine, Eye Institute of Xiamen University, School of Medicine, Xiamen University, Xiamen Fujian 361005, China
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2
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Yao X, Vishnu JA, Lupfer C, Hoenders D, Skarsetz O, Chen W, Dattler D, Perrot A, Wang WZ, Gao C, Giuseppone N, Schmid F, Walther A. Scalable Approach to Molecular Motor-Polymer Conjugates for Light-Driven Artificial Muscles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403514. [PMID: 38613525 DOI: 10.1002/adma.202403514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/09/2024] [Indexed: 04/15/2024]
Abstract
The integration of molecular machines and motors into materials represents a promising avenue for creating dynamic and functional molecular systems, with potential applications in soft robotics or reconfigurable biomaterials. However, the development of truly scalable and controllable approaches for incorporating molecular motors into polymeric matrices has remained a challenge. Here, it is shown that light-driven molecular motors with sensitive photo-isomerizable double bonds can be converted into initiators for Cu-mediated controlled/living radical polymerization enabling the synthesis of star-shaped motor-polymer conjugates. This approach enables scalability, precise control over the molecular structure, block copolymer structures, and high-end group fidelity. Moreover, it is demonstrated that these materials can be crosslinked to form gels with quasi-ideal network topology, exhibiting light-triggered contraction. The influence of arm length and polymer structure is investigated, and the first molecular dynamics simulation framework to gain deeper insights into the contraction processes is developed. Leveraging this scalable methodology, the creation of bilayer soft robotic devices and cargo-lifting artificial muscles is showcased, highlighting the versatility and potential applications of this advanced polymer chemistry approach. It is anticipated that the integrated experimental and simulation framework will accelerate scalable approaches for active polymer materials based on molecular machines, opening up new horizons in materials science and bioscience.
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Affiliation(s)
- Xuyang Yao
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
- Freiburg Institute for Advanced Studies, Freiburg, Germany
- Strasbourg Institute for Advanced Studies, Strasbourg, France
| | - Jude Ann Vishnu
- KOMET 1, Institute of Physics, Johannes Gutenberg University of Mainz, D 55099, Mainz, Germany
| | - Claudius Lupfer
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Daniel Hoenders
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Oliver Skarsetz
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Weixiang Chen
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Damien Dattler
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Alexis Perrot
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Wen-Zhi Wang
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Chuan Gao
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Nicolas Giuseppone
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
- Freiburg Institute for Advanced Studies, Freiburg, Germany
- Strasbourg Institute for Advanced Studies, Strasbourg, France
- Institut Universitaire de France (IUF), Paris, 75005, France
| | - Friederike Schmid
- KOMET 1, Institute of Physics, Johannes Gutenberg University of Mainz, D 55099, Mainz, Germany
| | - Andreas Walther
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
- Freiburg Institute for Advanced Studies, Freiburg, Germany
- Strasbourg Institute for Advanced Studies, Strasbourg, France
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3
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Stevens MC, Taylor NM, Guo X, Hussain H, Mahmoudi N, Cattoz BN, Leung AHM, Dowding PJ, Vincent B, Briscoe WH. Diblock bottlebrush polymer in a non-polar medium: Self-assembly, surface forces, and superlubricity. J Colloid Interface Sci 2024; 658:639-647. [PMID: 38134672 DOI: 10.1016/j.jcis.2023.12.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/08/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023]
Abstract
Whilst bottlebrush polymers have been studied in aqueous media for their conjectured role in biolubrication, surface forces and friction mediated by bottlebrush polymers in non-polar media have not been previously reported. Here, small-angle neutron scattering (SANS) showed that a diblock bottlebrush copolymer (oligoethyleneglycol acrylate/ethylhexyl acrylate; OEGA/EHA) formed spherical core-shell aggregates in n-dodecane (a model oil) in the polymer concentration range 0.1-2.0 wt%, with a radius of gyration Rg ∼ 7 nm, comprising 40-65 polymer molecules per aggregate. The surface force apparatus (SFA) measurements revealed purely repulsive forces between surfaces bearing inhomogeneous polymer layers of thickness L ∼ 13-23 nm, attributed to adsorption of a mixture of polymer chains and surface-deformed micelles. Despite the surface inhomogeneity, the polymer layers could mediate effective lubrication, demonstrating superlubricity with the friction coefficient as low as µ ∼ 0.003. The analysis of velocity-dependence of friction using the Eyring model shed light on the mechanism of the frictional process. That is, the friction mediation was consistent with the presence of nanoscopic surface aggregates, with possible contributions from a gel-like network formed by the polymer chains on the surface. These unprecedented results, correlating self-assembled polymer micelle structure with the surface forces and friction the polymer layers mediate, highlight the potential of polymers with the diblock bottlebrush architecture widespread in biological living systems, in tailoring desired surface interactions in non-polar media.
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Affiliation(s)
- Michael C Stevens
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Nicholas M Taylor
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK; Syngenta, Jealott's Hill International Research Centre, Bracknell RG42 6EY, UK
| | - Xueying Guo
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Hadeel Hussain
- Diamond Light Source Ltd, I07 Beamline, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - Najet Mahmoudi
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0QX, UK
| | - Beatrice N Cattoz
- Infineum UK Ltd, Milton Hill Business and Technology Centre, Abingdon, Oxon OX13 6BB, UK
| | - Alice H M Leung
- Infineum UK Ltd, Milton Hill Business and Technology Centre, Abingdon, Oxon OX13 6BB, UK
| | - Peter J Dowding
- Infineum UK Ltd, Milton Hill Business and Technology Centre, Abingdon, Oxon OX13 6BB, UK
| | - Brian Vincent
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Wuge H Briscoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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Percec V, Sahoo D. From Frank-Kasper, Quasicrystals, and Biological Membrane Mimics to Reprogramming In Vivo the Living Factory to Target the Delivery of mRNA with One-Component Amphiphilic Janus Dendrimers. Biomacromolecules 2024; 25:1353-1370. [PMID: 38232372 DOI: 10.1021/acs.biomac.3c01390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
This Perspective is dedicated to the 25th Anniversary of Biomacromolecules. It provides a personal view on the developing field of the polymer and biology interface over the 25 years since the journal was launched by the American Chemical Society (ACS). This Perspective is meant to bridge an article published in the first issue of the journal and recent bioinspired developments in the laboratory of the corresponding author. The discovery of supramolecular spherical helices self-organizing into Frank-Kasper and quasicrystals as models of icosahedral viruses, as well as of columnar helical assemblies that mimic rodlike viruses by supramolecular dendrimers, is briefly presented. The transplant of these assemblies from supramolecular dendrimers to block copolymers, giant surfactants, and other self-organized soft matter follows. Amphiphilic self-assembling Janus dendrimers and glycodendrimers as mimics of biological membranes and their glycans are discussed. New concepts derived from them that evolved in the in vivo targeted delivery of mRNA with the simplest one-component synthetic vector systems are introduced. Some synthetic methodologies employed during the synthesis and self-assembly are explained. Unraveling bioinspired applications of novel materials concludes this brief 25th Anniversary Perspective of Biomacromolecules.
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Affiliation(s)
- Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Dipankar Sahoo
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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5
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Lu D, Jia Z, Monteiro MJ. A Sequence-Defined ABC Dendritic Macromolecule with Amino Acid Peripheral Functionality via Iterative Chemoselective Reactions. Biomacromolecules 2024; 25:2007-2015. [PMID: 38349647 DOI: 10.1021/acs.biomac.3c01411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Chemoselective reactions allow near-precision control over the polymer composition and topology to create sequence-controlled polymers with similar secondary and tertiary structures to those found in proteins. Dendrimers are recognized as well-defined macromolecules with the potential to mimic protein surface functionality due to the large number of functional groups available at its periphery with the internal structure acting as the support scaffold. Transitioning from using small-molecule dendrimers to dendritic macromolecules will not only allow retention of the high peripheral functionality but also provide an internal scaffold with a desired polymer composition within each generational layer. Here, we exemplify a systematic approach to creating a dendritic macromolecule with the placement of different polymer building blocks in precise locations within the internal structure and the placement of three different amino acid moieties clustered at the periphery. The synthesis of this ABC dendritic macromolecule was accomplished through iterative chemoselective reactions.
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Affiliation(s)
- Derong Lu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 70 Nanyang Drive, 637457 Singapore
| | - Zhongfan Jia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Sturt Road, Bedford Park, Adelaide, South Australia 5042, Australia
| | - Michael J Monteiro
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
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6
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Gao G, Hara M, Seki T, Takeoka Y. Synthesis of thermo-responsive polymer gels composed of star-shaped block copolymers by copper-catalyzed living radical polymerization and click reaction. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2024; 25:2302795. [PMID: 38361532 PMCID: PMC10868426 DOI: 10.1080/14686996.2024.2302795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/30/2023] [Indexed: 02/17/2024]
Abstract
In recent times, there has been a significant surge in research interest surrounding thermo-responsive water-soluble polyacrylamides, primarily due to their intriguing capability to undergo significant solubility changes in water. These polymers exhibit the remarkable ability to shift from a soluble to an insoluble state in response to temperature variations. The capacity of these polymers to dynamically respond to temperature changes opens up exciting avenues for designing smart materials with tunable properties, amplifying their utility across a spectrum of scientific and technological applications. Researchers have been particularly captivated by the potential applications of thermo-responsive water-soluble polyacrylamides in diverse fields such as drug delivery, gene carriers, tissue engineering, sensors, catalysis, and chromatography separation. This study reports the construction and functionalization of polymer gels consisting of a polymer network of polyacrylamide derivatives with nano-sized structural units. Specifically, thermo-responsive polymer gels were synthesized by combining well-defined star-shaped polymers composed of polyacrylamide derivatives with a multifunctional initiator and linking method through a self-accelerating click reaction. The polymerization system employed a highly living approach, resulting in polymer chains characterized by narrow molecular weight distributions. The method's high functionality facilitated the synthesis of a temperature-responsive block copolymer gel composed of N-isopropyl acrylamide (NIPA) and N-ethyl acrylamide (NEAA). The resulting polymer gel, comprising star-shaped block copolymers of NIPA and NEAA, showcases smooth volume changes with temperature jumps.
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Affiliation(s)
- Guohao Gao
- Department of Molecular & Macromolecular Chemistry, Nagoya University, Nagoya, Japan
| | - Mitsuo Hara
- Department of Molecular & Macromolecular Chemistry, Nagoya University, Nagoya, Japan
| | - Takahiro Seki
- Department of Molecular & Macromolecular Chemistry, Nagoya University, Nagoya, Japan
| | - Yukikazu Takeoka
- Department of Molecular & Macromolecular Chemistry, Nagoya University, Nagoya, Japan
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7
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Křivánková N, Kaya K, van der Wijngaart W, Edlund U. Copper-mediated synthesis of temperature-responsive poly( N-acryloyl glycinamide) polymers: a step towards greener and simple polymerisation. RSC Adv 2023; 13:29099-29108. [PMID: 37800134 PMCID: PMC10548432 DOI: 10.1039/d3ra04993k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023] Open
Abstract
Stimuli-responsive materials with reversible supramolecular networks controlled by a change in temperature are of interest in medicine, biomedicine and analytical chemistry. For these materials to become more impactful, the development of greener synthetic practices with more sustainable solvents, lower energy consumption and a reduction in metallic catalysts is needed. In this work, we investigate the polymerisation of N-acryloyl glycinamide monomer by single-electron transfer reversible-deactivation radical polymerisation and its effect on the cloud point of the resulting PNAGA polymers. We accomplished 80% conversion within 5 min in water media using a copper wire catalyst. The material exhibited a sharp upper critical solution temperature (UCST) phase transition (10-80% transition within 6 K). These results indicate that UCST-exhibiting PNAGA can be synthesized at ambient temperatures and under non-inert conditions, eliminating the cost- and energy-consuming deoxygenation step. The choice of copper wire as the catalyst allows the possibility of catalyst recycling. Furthermore, we show that the reaction is feasible in a simple vial which would facilitate upscaling.
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Affiliation(s)
- Nikola Křivánková
- Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
- Digital Futures, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
| | - Kerem Kaya
- Intelligent Systems, School of Electrical Engineering and Computer Science, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
- Digital Futures, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
| | - Wouter van der Wijngaart
- Intelligent Systems, School of Electrical Engineering and Computer Science, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
- Digital Futures, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
| | - Ulrica Edlund
- Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
- Digital Futures, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
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8
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Chen Z, Sun Y, Wang X, Zhang W, Zhang Z. Tailoring Polymerization Controllability and Dispersity Through a Photoswitchable Catalyst Strategy. Macromol Rapid Commun 2023; 44:e2300198. [PMID: 37231589 DOI: 10.1002/marc.202300198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/12/2023] [Indexed: 05/27/2023]
Abstract
Modulating on-demand polymerization is a challenge in synthetic macromolecules. Herein, tailoring polymerization controllability and dispersity during single-electron transfer mediated living radical polymerization (SET-LRP) of methyl methacrylate (MMA) is achieved. Hexaarylbiimidazole (HABI) is employed as a photoswitchable catalyst, allowing reversible control of catalytic activity between an active and inactive state. In the presence of HABI and with the light on (active state), control SET-LRP of MMA follows first-order kinetics, resulting in polymers with a narrow molecular weight distribution. In contrast, polymerization responds to light and reverts to their original uncontrolled state with light off (inactive state). Therefore, repeatable resetting polymerization can be easily performed. The key to photomodulating dispersity is to use an efficient molecular switch to tailor the breadths of dispersity. Besides, the mechanism of HABI-mediated SET-LRP with switchable ability is proposed.
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Affiliation(s)
- Zhuan Chen
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry Engineering and Materials Science of Soochow University, Suzhou, 215123, P. R. China
| | - Yue Sun
- Center for Soft Condensed Matter Physics and Interdisciplinary Research & Jiangsu Key Laboratory of Thin Films, School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
| | - Xin Wang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry Engineering and Materials Science of Soochow University, Suzhou, 215123, P. R. China
| | - Weidong Zhang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry Engineering and Materials Science of Soochow University, Suzhou, 215123, P. R. China
- Center for Soft Condensed Matter Physics and Interdisciplinary Research & Jiangsu Key Laboratory of Thin Films, School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
| | - Zhengbiao Zhang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry Engineering and Materials Science of Soochow University, Suzhou, 215123, P. R. China
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9
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Kitayama Y, Katayama A, Shao Z, Harada A. Biocompatible Polymer-Grafted TiO 2 Nanoparticle Sonosensitizers Prepared Using Phosphonic Acid-Functionalized RAFT Agent. Polymers (Basel) 2023; 15:polym15112426. [PMID: 37299224 DOI: 10.3390/polym15112426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
Sonodynamic therapy is widely used in clinical studies including cancer therapy. The development of sonosensitizers is important for enhancing the generation of reactive oxygen species (ROS) under sonication. Herein, we have developed poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC)-modified TiO2 nanoparticles as new biocompatible sonosensitizers with high colloidal stability under physiological conditions. To fabricate biocompatible sonosensitizers, a grafting-to approach was adopted with phosphonic-acid-functionalized PMPC, which was prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization of 2-methacryloyloxyethyl phosphorylcholine (MPC) using a newly designed water-soluble RAFT agent possessing a phosphonic acid group. The phosphonic acid group can conjugate with the OH groups on the TiO2 nanoparticles. We have clarified that the phosphonic acid end group is more crucial for creating colloidally stable PMPC-modified TiO2 nanoparticles under physiological conditions than carboxylic-acid-functionalized PMPC-modified ones. Furthermore, the enhanced generation of singlet oxygen (1O2), an ROS, in the presence of PMPC-modified TiO2 nanoparticles was confirmed using a 1O2-reactive fluorescent probe. We believe that the PMPC-modified TiO2 nanoparticles prepared herein have potential utility as novel biocompatible sonosensitizers for cancer therapy.
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Affiliation(s)
- Yukiya Kitayama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Aoi Katayama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Zhicheng Shao
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Atsushi Harada
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
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10
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Lu J, Atochina-Vasserman EN, Maurya DS, Shalihin MI, Zhang D, Chenna SS, Adamson J, Liu M, Shah HUR, Shah H, Xiao Q, Queeley B, Ona NA, Reagan EK, Ni H, Sahoo D, Peterca M, Weissman D, Percec V. Screening Libraries to Discover Molecular Design Principles for the Targeted Delivery of mRNA with One-Component Ionizable Amphiphilic Janus Dendrimers Derived from Plant Phenolic Acids. Pharmaceutics 2023; 15:1572. [PMID: 37376020 DOI: 10.3390/pharmaceutics15061572] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/13/2023] [Accepted: 05/14/2023] [Indexed: 06/29/2023] Open
Abstract
Viral and synthetic vectors to deliver nucleic acids were key to the rapid development of extraordinarily efficient COVID-19 vaccines. The four-component lipid nanoparticles (LNPs), containing phospholipids, PEG-conjugated lipids, cholesterol, and ionizable lipids, co-assembled with mRNA via a microfluidic technology, are the leading nonviral delivery vector used by BioNTech/Pfizer and Moderna to access COVID-19 mRNA vaccines. LNPs exhibit a statistical distribution of their four components when delivering mRNA. Here, we report a methodology that involves screening libraries to discover the molecular design principles required to realize organ-targeted mRNA delivery and mediate activity with a one-component ionizable multifunctional amphiphilic Janus dendrimer (IAJD) derived from plant phenolic acids. IAJDs co-assemble with mRNA into monodisperse dendrimersome nanoparticles (DNPs) with predictable dimensions, via the simple injection of their ethanol solution in a buffer. The precise location of the functional groups in one-component IAJDs demonstrated that the targeted organs, including the liver, spleen, lymph nodes, and lung, are selected based on the hydrophilic region, while activity is associated with the hydrophobic domain of IAJDs. These principles, and a mechanistic hypothesis to explain activity, simplify the synthesis of IAJDs, the assembly of DNPs, handling, and storage of vaccines, and reduce price, despite employing renewable plant starting materials. Using simple molecular design principles will lead to increased accessibility to a large diversity of mRNA-based vaccines and nanotherapeutics.
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Affiliation(s)
- Juncheng Lu
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Elena N Atochina-Vasserman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Devendra S Maurya
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Muhammad Irhash Shalihin
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Dapeng Zhang
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Srijay S Chenna
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Jasper Adamson
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Matthew Liu
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Habib Ur Rehman Shah
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Honey Shah
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Qi Xiao
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Bryn Queeley
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Nathan A Ona
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Erin K Reagan
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Houping Ni
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Dipankar Sahoo
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Mihai Peterca
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Drew Weissman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
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11
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Percec V, Sahoo D, Adamson J. Stimuli-Responsive Principles of Supramolecular Organizations Emerging from Self-Assembling and Self-Organizable Dendrons, Dendrimers, and Dendronized Polymers. Polymers (Basel) 2023; 15:polym15081832. [PMID: 37111979 PMCID: PMC10142069 DOI: 10.3390/polym15081832] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
All activities of our daily life, of the nature surrounding us and of the entire society and its complex economic and political systems are affected by stimuli. Therefore, understanding stimuli-responsive principles in nature, biology, society, and in complex synthetic systems is fundamental to natural and life sciences. This invited Perspective attempts to organize, to the best of our knowledge, for the first time the stimuli-responsive principles of supramolecular organizations emerging from self-assembling and self-organizable dendrons, dendrimers, and dendronized polymers. Definitions of stimulus and stimuli from different fields of science are first discussed. Subsequently, we decided that supramolecular organizations of self-assembling and self-organizable dendrons, dendrimers, and dendronized polymers may fit best in the definition of stimuli from biology. After a brief historical introduction to the discovery and development of conventional and self-assembling and self-organizable dendrons, dendrimers, and dendronized polymers, a classification of stimuli-responsible principles as internal- and external-stimuli was made. Due to the enormous amount of literature on conventional dendrons, dendrimers, and dendronized polymers as well as on their self-assembling and self-organizable systems we decided to discuss stimuli-responsive principles only with examples from our laboratory. We apologize to all contributors to dendrimers and to the readers of this Perspective for this space-limited decision. Even after this decision, restrictions to a limited number of examples were required. In spite of this, we expect that this Perspective will provide a new way of thinking about stimuli in all fields of self-organized complex soft matter.
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Affiliation(s)
- Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Dipankar Sahoo
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
- Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Jasper Adamson
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
- Chemical Physics Laboratory, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
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12
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Janata M, Čadová E, Johnson JW, Raus V. Diminishing the catalyst concentration in the Cu(0)‐
RDRP
and
ATRP
synthesis of well‐defined low‐molecular weight poly(glycidyl methacrylate). JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1002/pol.20230087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Miroslav Janata
- Institute of Macromolecular Chemistry Czech Academy of Sciences Heyrovského nám. 2 Prague 6 162 06 Czech Republic
| | - Eva Čadová
- Institute of Macromolecular Chemistry Czech Academy of Sciences Heyrovského nám. 2 Prague 6 162 06 Czech Republic
| | - Jeffery W. Johnson
- Axalta Coating Systems Global Innovation Center Philadelphia PA 19112 USA
| | - Vladimír Raus
- Institute of Macromolecular Chemistry Czech Academy of Sciences Heyrovského nám. 2 Prague 6 162 06 Czech Republic
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13
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Assembling Complex Macromolecules and Self-Organizations of Biological Relevance with Cu(I)-Catalyzed Azide-Alkyne, Thio-Bromo, and TERMINI Double "Click" Reactions. Polymers (Basel) 2023; 15:polym15051075. [PMID: 36904317 PMCID: PMC10007166 DOI: 10.3390/polym15051075] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/17/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023] Open
Abstract
In 2022, the Nobel Prize in Chemistry was awarded to Bertozzi, Meldal, and Sharpless "for the development of click chemistry and biorthogonal chemistry". Since 2001, when the concept of click chemistry was advanced by Sharpless laboratory, synthetic chemists started to envision click reactions as the preferred choice of synthetic methodology employed to create new functions. This brief perspective will summarize research performed in our laboratories with the classic Cu(I)-catalyzed azide-alkyne click (CuAAC) reaction elaborated by Meldal and Sharpless, with the thio-bromo click (TBC) and with the less-used, irreversible TERminator Multifunctional INItiator (TERMINI) dual click (TBC) reactions, the last two elaborated in our laboratory. These click reactions will be used to assemble, by accelerated modular-orthogonal methodologies, complex macromolecules and self-organizations of biological relevance. Self-assembling amphiphilic Janus dendrimers and Janus glycodendrimers together with their biological membrane mimics known as dendrimersomes and glycodendrimersomes as well as simple methodologies to assemble macromolecules with perfect and complex architecture such as dendrimers from commercial monomers and building blocks will be discussed. This perspective is dedicated to the 75th anniversary of Professor Bogdan C. Simionescu, the son of my (VP) Ph.D. mentor, Professor Cristofor I. Simionescu, who as his father, took both science and science administration in his hands, and dedicated his life to handling them in a tandem way, to their best.
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14
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Maurya DS, Adamson J, Bensabeh N, Lligadas G, Percec V. Catalytic effect of
DMSO
in metal‐catalyzed radical polymerization mediated by disproportionation facilitates living and immortal radical polymerizations. JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1002/pol.20220632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Devendra S. Maurya
- Roy & Diana Vagelos Laboratories, Department of Chemistry University of Pennsylvania Philadelphia Pennsylvania USA
| | - Jasper Adamson
- Roy & Diana Vagelos Laboratories, Department of Chemistry University of Pennsylvania Philadelphia Pennsylvania USA
- Chemical Physics Laboratory National Institute of Chemical Physics and Biophysics Tallinn Estonia
| | - Nabil Bensabeh
- Laboratory of Sustainable Polymers, Department of Analytical Chemistry and Organic Chemistry University Rovira i Virgili Tarragona Spain
| | - Gerard Lligadas
- Laboratory of Sustainable Polymers, Department of Analytical Chemistry and Organic Chemistry University Rovira i Virgili Tarragona Spain
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry University of Pennsylvania Philadelphia Pennsylvania USA
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15
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Parkatzidis K, Truong NP, Whitfield R, Campi CE, Grimm-Lebsanft B, Buchenau S, Rübhausen MA, Harrisson S, Konkolewicz D, Schindler S, Anastasaki A. Oxygen-Enhanced Atom Transfer Radical Polymerization through the Formation of a Copper Superoxido Complex. J Am Chem Soc 2023; 145:1906-1915. [PMID: 36626247 DOI: 10.1021/jacs.2c11757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In controlled radical polymerization, oxygen is typically regarded as an undesirable component resulting in terminated polymer chains, deactivated catalysts, and subsequent cessation of the polymerization. Here, we report an unusual atom transfer radical polymerization whereby oxygen favors the polymerization by triggering the in situ transformation of CuBr/L to reactive superoxido species at room temperature. Through a superoxido ARGET-ATRP mechanism, an order of magnitude faster polymerization rate and a rapid and complete initiator consumption can be achieved as opposed to when unoxidized CuBr/L was instead employed. Very high end-group fidelity has been demonstrated by mass-spectrometry and one-pot synthesis of block and multiblock copolymers while pushing the reactions to reach near-quantitative conversions in all steps. A high molecular weight polymer could also be targeted (DPn = 6400) without compromising the control over the molar mass distributions (Đ < 1.20), even at an extremely low copper concentration (4.5 ppm). The versatility of the technique was demonstrated by the polymerization of various monomers in a controlled fashion. Notably, the efficiency of our methodology is unaffected by the purity of the starting CuBr, and even a brown highly-oxidized 15-year-old CuBr reagent enabled a rapid and controlled polymerization with a final dispersity of 1.07, thus not only reducing associated costs but also omitting the need for rigorous catalyst purification prior to polymerization.
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Affiliation(s)
- Kostas Parkatzidis
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich 8093, Switzerland
| | - Nghia P Truong
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich 8093, Switzerland
| | - Richard Whitfield
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich 8093, Switzerland
| | - Chiara E Campi
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig University of Gießen, Heinrich-Buff Ring 17, D-35392, Gießen, Hessen 35392, Germany
| | - Benjamin Grimm-Lebsanft
- Center For Free Electron Laser Science, University of Hamburg, Institut für Nanostruktur und Festkörperphysik, Gebäude 99, Luruper Chaussee 149, Hamburg 22761, Germany
| | - Sören Buchenau
- Center For Free Electron Laser Science, University of Hamburg, Institut für Nanostruktur und Festkörperphysik, Gebäude 99, Luruper Chaussee 149, Hamburg 22761, Germany
| | - Michael A Rübhausen
- Center For Free Electron Laser Science, University of Hamburg, Institut für Nanostruktur und Festkörperphysik, Gebäude 99, Luruper Chaussee 149, Hamburg 22761, Germany
| | - Simon Harrisson
- Laboratoire de Chimie des Polymères Organiques, University of Bordeaux/ENSCBP/CNRS UMR5629, Pessac 33600, France
| | - Dominik Konkolewicz
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Siegfried Schindler
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig University of Gießen, Heinrich-Buff Ring 17, D-35392, Gießen, Hessen 35392, Germany
| | - Athina Anastasaki
- Laboratory of Polymeric Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich 8093, Switzerland
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16
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Theodorou A, Gounaris D, Voutyritsa E, Andrikopoulos N, Baltzaki CIM, Anastasaki A, Velonia K. Rapid Oxygen-Tolerant Synthesis of Protein-Polymer Bioconjugates via Aqueous Copper-Mediated Polymerization. Biomacromolecules 2022; 23:4241-4253. [PMID: 36067415 DOI: 10.1021/acs.biomac.2c00726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of protein-polymer conjugates usually requires extensive and costly deoxygenation procedures, thus limiting their availability and potential applications. In this work, we report the ultrafast synthesis of polymer-protein bioconjugates in the absence of any external deoxygenation via an aqueous copper-mediated methodology. Within 10 min and in the absence of any external stimulus such as light (which may limit the monomer scope and/or disrupt the secondary structure of the protein), a range of hydrophobic and hydrophilic monomers could be successfully grafted from a BSA macroinitiator, yielding well-defined polymer-protein bioconjugates at quantitative yields. Our approach is compatible with a wide range of monomer classes such as (meth) acrylates, styrene, and acrylamides as well as multiple macroinitiators including BSA, BSA nanoparticles, and beta-galactosidase from Aspergillus oryzae. Notably, the synthesis of challenging protein-polymer-polymer triblock copolymers was also demonstrated, thus significantly expanding the scope of our strategy. Importantly, both lower and higher scale polymerizations (from 0.2 to 35 mL) were possible without compromising the overall efficiency and the final yields. This simple methodology paves the way for a plethora of applications in aqueous solutions without the need of external stimuli or tedious deoxygenation.
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Affiliation(s)
- Alexis Theodorou
- Department of Materials Science and Technology, University of Crete, Heraklion 70013, Greece
| | - Dimitris Gounaris
- Department of Materials Science and Technology, University of Crete, Heraklion 70013, Greece
| | - Errika Voutyritsa
- Department of Materials Science and Technology, University of Crete, Heraklion 70013, Greece
| | - Nicholas Andrikopoulos
- Department of Materials Science and Technology, University of Crete, Heraklion 70013, Greece
| | | | | | - Kelly Velonia
- Department of Materials Science and Technology, University of Crete, Heraklion 70013, Greece
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17
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un Nisa Q, Theobald W, Hepburn KS, Riddlestone I, Bingham NM, Kopeć M, Roth PJ. Degradable Linear and Bottlebrush Thioester-Functional Copolymers through Atom-Transfer Radical Ring-Opening Copolymerization of a Thionolactone. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qamar un Nisa
- Department of Chemistry, School of Chemistry and Chemical Engineering, University of Surrey, Surrey, Guildford GU2 7XH, U.K
| | - William Theobald
- Department of Chemistry, School of Chemistry and Chemical Engineering, University of Surrey, Surrey, Guildford GU2 7XH, U.K
| | - Kyle S. Hepburn
- Department of Chemistry, School of Chemistry and Chemical Engineering, University of Surrey, Surrey, Guildford GU2 7XH, U.K
| | - Ian Riddlestone
- Department of Chemistry, School of Chemistry and Chemical Engineering, University of Surrey, Surrey, Guildford GU2 7XH, U.K
| | - Nathaniel M. Bingham
- Department of Chemistry, School of Chemistry and Chemical Engineering, University of Surrey, Surrey, Guildford GU2 7XH, U.K
| | - Maciej Kopeć
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Peter J. Roth
- Department of Chemistry, School of Chemistry and Chemical Engineering, University of Surrey, Surrey, Guildford GU2 7XH, U.K
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18
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Echizen K, Taniguchi T, Nishimura T, Maeda K. Well‐Controlled Living Polymerization of Phenylacetylenes in Water: Synthesis of Water‐Soluble Stereoregular Telechelic Poly(phenylacetylene)s. Angew Chem Int Ed Engl 2022; 61:e202202676. [DOI: 10.1002/anie.202202676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 12/12/2022]
Affiliation(s)
- Kensuke Echizen
- Graduate School of Frontier Science Initiative Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Tsuyoshi Taniguchi
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Tatsuya Nishimura
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
- Nano Life Science Institute (WPI-NanoLSI) Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
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19
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Aydogan C, Yilmaz G, Shegiwal A, Haddleton DM, Yagci Y. Photoinduced Controlled/Living Polymerizations. Angew Chem Int Ed Engl 2022; 61:e202117377. [PMID: 35128771 DOI: 10.1002/anie.202117377] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Indexed: 11/09/2022]
Abstract
The application of photochemistry in polymer synthesis is of interest due to the unique possibilities offered compared to thermochemistry, including topological and temporal control, rapid polymerization, sustainable low-energy processes, and environmentally benign features leading to established and emerging applications in adhesives, coatings, adaptive manufacturing, etc. In particular, the utilization of photochemistry in controlled/living polymerizations often offers the capability for precise control over the macromolecular structure and chain length in addition to the associated advantages of photochemistry. Herein, the latest developments in photocontrolled living radical and cationic polymerizations and their combinations for application in polymer syntheses are discussed. This Review summarizes and highlights recent studies in the emerging area of photoinduced controlled/living polymerizations. A discussion of mechanistic details highlights differences as well as parallels between different systems for different polymerization methods and monomer applicability.
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Affiliation(s)
- Cansu Aydogan
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.,Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Gorkem Yilmaz
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Ataulla Shegiwal
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - David M Haddleton
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Yusuf Yagci
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
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20
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Precision Polymer Synthesis by Controlled Radical Polymerization: Fusing the progress from Polymer Chemistry and Reaction Engineering. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101555] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Echizen K, Taniguchi T, Nishimura T, Maeda K. Well‐Controlled Living Polymerization of Phenylacetylenes in Water: Synthesis of Water‐Soluble Stereoregular Telechelic Poly(phenylacetylene)s. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kensuke Echizen
- Graduate School of Frontier Science Initiative Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Tsuyoshi Taniguchi
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Tatsuya Nishimura
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
- Nano Life Science Institute (WPI-NanoLSI) Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
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22
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Aydogan C, Yilmaz G, Shegiwal A, Haddleton DM, Yagci Y. Photoinduced Controlled/Living Polymerizations. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Cansu Aydogan
- Department of Chemistry Faculty of Science and Letters Istanbul Technical University 34469 Maslak Istanbul Turkey
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | - Gorkem Yilmaz
- Department of Chemistry Faculty of Science and Letters Istanbul Technical University 34469 Maslak Istanbul Turkey
| | - Ataulla Shegiwal
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | | | - Yusuf Yagci
- Department of Chemistry Faculty of Science and Letters Istanbul Technical University 34469 Maslak Istanbul Turkey
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23
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Hou L, Jing X, Huang H, Duan C. Merging Charge Transfer into Metal-Organic Frameworks to Achieve High Reduction Potentials via Multiphoton Excitation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:15307-15316. [PMID: 35344330 DOI: 10.1021/acsami.2c01595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Utilization of multiphotons to achieve high reduction potentials is a highly demanding but still challenging task for reductive cleavage of inert bonds. Herein, we report a new charge transfer approach that simultaneously excites the electron-rich dye and the radical anionic of the electron-deficient one for photocatalytic activation of aryl chlorides with high reduction potentials (Ered ≈ -1.9 to -2.9 V). Interactions between the tetraphenylbenzene-1,4,-diamine dyes in the large pores of metal-organic frameworks and the adsorbed 9,10-dicyanoanthracene partly endows charge transfer in the ground state. The first photoexcitation led to the formation charge separation pairs containing both radical cation and anion for second photon excitation. The possibility of modifying each absorption band of the two dyes independently innovated the resultant aryl radicals applied in various useful transformations, expanding multiphoton manifolds on both the dye scopes and reaction versions. A comparison of the catalytic performance between different structural patterns of metal-organic frameworks with the same ligand demonstrated that the incorporating of the organic dyes within the pores of the frameworks was essential to form charge-transfer species and accelerate the interesting chemical conversion.
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Affiliation(s)
- Leixin Hou
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Xu Jing
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Huilin Huang
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
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24
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Rosati M, Acocella A, Pizzi A, Turtù G, Neri G, Demitri N, Nonappa, Raffaini G, Donnio B, Zerbetto F, Bombelli FB, Cavallo G, Metrangolo P. Janus-Type Dendrimers Based on Highly Branched Fluorinated Chains with Tunable Self-Assembly and 19F Nuclear Magnetic Resonance Properties. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Marta Rosati
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20133 Milan, Italy
| | - Angela Acocella
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum - Università di Bologna, Via F. Selmi, 2, 40126 Bologna, Italy
| | - Andrea Pizzi
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20133 Milan, Italy
| | - Giorgio Turtù
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum - Università di Bologna, Via F. Selmi, 2, 40126 Bologna, Italy
| | - Giulia Neri
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20133 Milan, Italy
| | - Nicola Demitri
- Elettra Sincrotrone Trieste, S.S. 14 Km 163.5 in Area Science Park, 34149 Basovizza, Trieste, Italy
| | - Nonappa
- Faculty of Engineering and Natural Sciences, Tampere University, FI-33720 Tampere, Finland
| | - Giuseppina Raffaini
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20133 Milan, Italy
| | - Bertrand Donnio
- Institut de Physique et Chimie des Materiaux de Strasbourg - IPCMS, UMR 7504 - CNRS, Université de Strasbourg, F-67034 Cedex 2 Strasbourg, France
| | - Francesco Zerbetto
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum - Università di Bologna, Via F. Selmi, 2, 40126 Bologna, Italy
| | - Francesca Baldelli Bombelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20133 Milan, Italy
| | - Gabriella Cavallo
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20133 Milan, Italy
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20133 Milan, Italy
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25
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Wei Z, Chen D, Zhang X, Wang L, Yang W. Precise Synthesis of Structurally Diverse Aggregation-Induced Emission-Active Polyacrylates by Cu(0)-Catalyzed SET-LRP with Macromolecular Structure-Correlated Emission. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhiqiang Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dong Chen
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xinru Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Li Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Wantai Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center for the Syntheses and Applications of Waterborne Polymers, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, Beijing 100029, China
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26
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Zhang J, Duan J, Chen D, Ma Y, Yang W. Direct Photolysis RAFT Polymerization of (Metha)acrylate with 2‐Cyano‐2‐propyldodecyl Trithiocarbonate as Mediator. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jianxiong Zhang
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China
| | - Junjin Duan
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China
| | - Dong Chen
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China
- Beijing Engineering Research Center of Syntheses and Applications of Waterborne Polymers Beijing University of Chemical Technology Beijing 100029 China
| | - Yuhong Ma
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China
- Beijing Engineering Research Center of Syntheses and Applications of Waterborne Polymers Beijing University of Chemical Technology Beijing 100029 China
| | - Wantai Yang
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China
- Beijing Engineering Research Center of Syntheses and Applications of Waterborne Polymers Beijing University of Chemical Technology Beijing 100029 China
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27
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Kitayama Y, Sadakane M, Harada A. Reversible chain transfer catalyzed polymerization in miniemulsion systems with tetraiodomethane as a catalyst. Polym Chem 2022. [DOI: 10.1039/d2py01019d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetraiodomethane (CI4) is an effective catalyst in reversible chain transfer catalyzed polymerization (RTCP) of methacrylate monomers in miniemulsion polymerization systems (miniemulsion RTCP).
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Affiliation(s)
- Yukiya Kitayama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Masaya Sadakane
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Atsushi Harada
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
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28
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Bhattacharya K, Kalita U, Singha NK. Tailor-made Glycopolymers via Reversible Deactivation Radical Polymerization: Design, Properties and Applications. Polym Chem 2022. [DOI: 10.1039/d1py01640g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Investigating the underlying mechanism of biological interactions using glycopolymer is becoming increasingly important owing to their unique recognition properties. The multivalent interactions between lectin and glycopolymer are significantly influenced by...
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29
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Yu XC, Zhang CC, Wang LT, Li JZ, Li T, Wei WT. The synthesis of seven- and eight-membered rings by radical strategies. Org Chem Front 2022. [DOI: 10.1039/d2qo00774f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Radical strategies for preparation of seven- or eight-membered rings.
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Affiliation(s)
- Xuan-Chi Yu
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Can-Can Zhang
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ling-Tao Wang
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Jiao-Zhe Li
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan, 473061, China
| | - Wen-Ting Wei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
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30
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31
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Affiliation(s)
- Patrick W. Skelly
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, CA, USA
| | - Longbo Li
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, CA, USA
| | - Rebecca Braslau
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, CA, USA
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32
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Edeleva M, Van Steenberge PH, Sabbe MK, D’hooge DR. Connecting Gas-Phase Computational Chemistry to Condensed Phase Kinetic Modeling: The State-of-the-Art. Polymers (Basel) 2021; 13:3027. [PMID: 34577928 PMCID: PMC8467432 DOI: 10.3390/polym13183027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 02/06/2023] Open
Abstract
In recent decades, quantum chemical calculations (QCC) have increased in accuracy, not only providing the ranking of chemical reactivities and energy barriers (e.g., for optimal selectivities) but also delivering more reliable equilibrium and (intrinsic/chemical) rate coefficients. This increased reliability of kinetic parameters is relevant to support the predictive character of kinetic modeling studies that are addressing actual concentration changes during chemical processes, taking into account competitive reactions and mixing heterogeneities. In the present contribution, guidelines are formulated on how to bridge the fields of computational chemistry and chemical kinetics. It is explained how condensed phase systems can be described based on conventional gas phase computational chemistry calculations. Case studies are included on polymerization kinetics, considering free and controlled radical polymerization, ionic polymerization, and polymer degradation. It is also illustrated how QCC can be directly linked to material properties.
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Affiliation(s)
- Mariya Edeleva
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, 9052 Zwijnaarde, Belgium; (P.H.M.V.S.); (M.K.S.)
| | - Paul H.M. Van Steenberge
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, 9052 Zwijnaarde, Belgium; (P.H.M.V.S.); (M.K.S.)
| | - Maarten K. Sabbe
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, 9052 Zwijnaarde, Belgium; (P.H.M.V.S.); (M.K.S.)
- Industrial Catalysis and Adsorption Technology (INCAT), Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
| | - Dagmar R. D’hooge
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, 9052 Zwijnaarde, Belgium; (P.H.M.V.S.); (M.K.S.)
- Centre for Textile Science and Engineering (CTSE), Ghent University, Technologiepark 70a, 9052 Zwijnaarde, Belgium
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Percec V, Xiao Q. Helical Chirality of Supramolecular Columns and Spheres Self‐Organizes Complex Liquid Crystals, Crystals, and Quasicrystals. Isr J Chem 2021. [DOI: 10.1002/ijch.202100057] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Virgil Percec
- Roy & Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania Philadelphia Pennsylvania 19104-6323 United States
| | - Qi Xiao
- Roy & Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania Philadelphia Pennsylvania 19104-6323 United States
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34
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Borsari M, Braidi N, Buffagni M, Ghelfi F, Parenti F, Porcelli N, Serafini G, Isse AA, Bonifaci L, Cavalca G, Longo A, Morandini I, Pettenuzzo N. Copper-catalyzed ARGET ATRP of styrene from ethyl α-haloisobutyrate in EtOAc/EtOH, using ascorbic acid/Na2CO3 as reducing system. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110675] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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35
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Eskandari P, Abousalman-Rezvani Z, Roghani-Mamaqani H, Salami-Kalajahi M. Polymer-functionalization of carbon nanotube by in situ conventional and controlled radical polymerizations. Adv Colloid Interface Sci 2021; 294:102471. [PMID: 34214841 DOI: 10.1016/j.cis.2021.102471] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 06/20/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023]
Abstract
Functionalization of carbon nanotube (CNT) with polymers has drawn much attention due to its wide range of applications. Polymer-functionalized CNT could exhibit variety of properties, such as responsivity to environmental stimuli, ability of complexation with metal ions, increased dispersibility in different solvents, higher compatibility with polymer matrix, etc. Chemical and physical methods have been developed for the preparation of polymer-functionalized CNT. Polymer chains are chemically bonded to the CNT edge or surface in the chemical methods, which results in highly stable CNT/polymer composites. "Grafting to", "grafting from", and "grafting through" methods are the most common chemical methods for polymer-functionalization of CNT. In "grafting to" method, pre-fabricated polymer chains are coupled with the either functionalized or non-functionalized CNT. In "grafting from" and "grafting through" methods, CNT is functionalized by polymers simultaneously synthesized by in situ polymerization methods. Conventional free radical polymerization (FRP) and also controlled radical polymerization (CRP) are the most promising methods for in situ tethering of polymer brushes onto the surface of CNT due to their control over the grafting density, thickness, and functionality of the polymer brushes. The main focus of this review is on the synthesis of polymer-functionalized CNT via both the "grafting from" and "grafting through" methods on the basis of FRP and CRP routs, which is commonly known as in situ polymerizations. Finally, the most important challenges and applications of the in situ polymer grafting methods are discussed, which could be interesting for the future works.
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36
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Murray AJ, Rogers JC, Katshu MZUH, Liddle PF, Upthegrove R. Oxidative Stress and the Pathophysiology and Symptom Profile of Schizophrenia Spectrum Disorders. Front Psychiatry 2021; 12:703452. [PMID: 34366935 PMCID: PMC8339376 DOI: 10.3389/fpsyt.2021.703452] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/28/2021] [Indexed: 12/12/2022] Open
Abstract
Schizophrenia is associated with increased levels of oxidative stress, as reflected by an increase in the concentrations of damaging reactive species and a reduction in anti-oxidant defences to combat them. Evidence has suggested that whilst not the likely primary cause of schizophrenia, increased oxidative stress may contribute to declining course and poor outcomes associated with schizophrenia. Here we discuss how oxidative stress may be implicated in the aetiology of schizophrenia and examine how current understanding relates associations with symptoms, potentially via lipid peroxidation induced neuronal damage. We argue that oxidative stress may be a good target for future pharmacotherapy in schizophrenia and suggest a multi-step model of illness progression with oxidative stress involved at each stage.
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Affiliation(s)
- Alex J. Murray
- Institute for Mental Health, University of Birmingham, Birmingham, United Kingdom
| | - Jack C. Rogers
- Institute for Mental Health, University of Birmingham, Birmingham, United Kingdom
| | - Mohammad Zia Ul Haq Katshu
- Institute of Mental Health, Division of Mental Health and Neurosciences University of Nottingham, Nottingham, United Kingdom
- Nottinghamshire Healthcare National Health Service Foundation Trust, Nottingham, United Kingdom
| | - Peter F. Liddle
- Institute of Mental Health, Division of Mental Health and Neurosciences University of Nottingham, Nottingham, United Kingdom
| | - Rachel Upthegrove
- Institute for Mental Health, University of Birmingham, Birmingham, United Kingdom
- Early Intervention Service, Birmingham Women's and Children's National Health Service Foundation Trust, Centre for Human Brain Health, University of Birmingham, Birmingham, United Kingdom
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37
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Duan Y, Li Q, Peng B, Tan S, Zhang Z. Grafting modification of poly(vinylidene fluoride-hexafluoropropylene) via Cu(0) mediated controlled radical polymerization. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Söder D, Garay-Sarmiento M, Rahimi K, Obstals F, Dedisch S, Haraszti T, Davari MD, Jakob F, Heß C, Schwaneberg U, Rodriguez-Emmenegger C. Unraveling the Mechanism and Kinetics of Binding of an LCI-eGFP-Polymer for Antifouling Coatings. Macromol Biosci 2021; 21:e2100158. [PMID: 34145970 DOI: 10.1002/mabi.202100158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/15/2021] [Indexed: 11/07/2022]
Abstract
The ability of proteins to adsorb irreversibly onto surfaces opens new possibilities to functionalize biological interfaces. Herein, the mechanism and kinetics of adsorption of protein-polymer macromolecules with the ability to equip surfaces with antifouling properties are investigated. These macromolecules consist of the liquid chromatography peak I peptide from which antifouling polymer brushes are grafted using single electron transfer-living radical polymerization. Surface plasmon resonance spectroscopy reveals an adsorption mechanism that follows a Langmuir-type of binding with a strong binding affinity to gold. X-ray reflectivity supports this by proving that the binding occurs exclusively by the peptide. However, the lateral organization at the surface is directed by the cylindrical eGFP. The antifouling functionality of the unimolecular coatings is confirmed by contact with blood plasma. All coatings reduce the fouling from blood plasma by 8894% with only minor effect of the degree of polymerization for the studied range (DP between 101 and 932). The excellent antifouling properties, combined with the ease of polymerization and the straightforward coating procedure make this a very promising antifouling concept for a multiplicity of applications.
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Affiliation(s)
- Dominik Söder
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074, Aachen, Germany
| | - Manuela Garay-Sarmiento
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Khosrow Rahimi
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany
| | - Fabian Obstals
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074, Aachen, Germany
| | - Sarah Dedisch
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Tamás Haraszti
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany
| | - Mehdi D Davari
- Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Felix Jakob
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Christoph Heß
- Faculty of Technology and Bionics, Rhine-Waal University of Applied Sciences, 47533, Kleve, Germany
| | - Ulrich Schwaneberg
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
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39
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Chen X, Zhou Z, Zhang H, Mao Y, Luo Z, Li X, Sha Y. Sustainable Thermoplastic Elastomers Derived from Lignin Bio‐Oils via an ABA Triblock Copolymer Strategy. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaofan Chen
- Department of Chemistry and Material Science College of Science Nanjing Forestry University Nanjing 210037 China
| | - Zhou Zhou
- Department of Chemistry and Material Science College of Science Nanjing Forestry University Nanjing 210037 China
| | - Hao Zhang
- Department of Chemistry and Material Science College of Science Nanjing Forestry University Nanjing 210037 China
| | - Yipeng Mao
- Department of Chemistry and Material Science College of Science Nanjing Forestry University Nanjing 210037 China
| | - Zhenyang Luo
- Department of Chemistry and Material Science College of Science Nanjing Forestry University Nanjing 210037 China
| | - Xiang Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Ye Sha
- Department of Chemistry and Material Science College of Science Nanjing Forestry University Nanjing 210037 China
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40
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Sun Z, Mi X, Yu Y, Shi W, Feng A, Moad G, Thang SH. “All-PVC” Flexible Poly(vinyl Chloride): Nonmigratory Star-Poly(vinyl Chloride) as Plasticizers for PVC by RAFT Polymerization. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00616] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Zhonghe Sun
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Manufacturing, Clayton 3168, Victoria, Australia
| | - Xing Mi
- Beijing East Simulation Software Technology Co., Beijing 100029, China
| | - Yanan Yu
- Department of Math and Engineering, Puyang Vocational and Technical College, Puyang 457000, Henan, China
| | - Wencheng Shi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Anchao Feng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Graeme Moad
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Manufacturing, Clayton 3168, Victoria, Australia
| | - San H. Thang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Manufacturing, Clayton 3168, Victoria, Australia
- School of Chemistry, Monash University, Clayton Campus, Clayton 3800, Victoria, Australia
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41
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42
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Braidi N, Buffagni M, Buzzoni V, Ghelfi F, Parenti F, Focarete ML, Gualandi C, Bedogni E, Bonifaci L, Cavalca G, Ferrando A, Longo A, Morandini I, Pettenuzzo N. Unusual Cross-Linked Polystyrene by Copper-Catalyzed ARGET ATRP Using a Bifunctional Initiator and No Cross-Linking Agent. Macromol Res 2021. [DOI: 10.1007/s13233-021-9039-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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43
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Mohammad SA, Dolui S, Kumar D, Alam MM, Banerjee S. Anisotropic and Self‐Healing Copolymer with Multiresponsive Capability via Recyclable Alloy‐Mediated RDRP. Macromol Rapid Commun 2021; 42:e2100096. [DOI: 10.1002/marc.202100096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/19/2021] [Indexed: 12/20/2022]
Affiliation(s)
- Sk Arif Mohammad
- Department of Chemistry Indian Institute of Technology Bhilai Raipur Chhattisgarh 492015 India
| | - Subrata Dolui
- Department of Chemistry Indian Institute of Technology Bhilai Raipur Chhattisgarh 492015 India
| | - Devendra Kumar
- Department of Chemistry Indian Institute of Technology Bhilai Raipur Chhattisgarh 492015 India
| | - Md. Mehboob Alam
- Department of Chemistry Indian Institute of Technology Bhilai Raipur Chhattisgarh 492015 India
| | - Sanjib Banerjee
- Department of Chemistry Indian Institute of Technology Bhilai Raipur Chhattisgarh 492015 India
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44
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Georgouvelas D, Abdelhamid HN, Li J, Edlund U, Mathew AP. All-cellulose functional membranes for water treatment: Adsorption of metal ions and catalytic decolorization of dyes. Carbohydr Polym 2021; 264:118044. [PMID: 33910746 DOI: 10.1016/j.carbpol.2021.118044] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/24/2021] [Accepted: 04/03/2021] [Indexed: 12/14/2022]
Abstract
In this study, we present a facile, one-step method for the manufacturing of all-cellulose, layered membranes containing cellulose nanocrystals (CNC), TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidized cellulose nanofibers (TO-CNF), or zwitterionic polymer grafted cellulose nanocrystals (CNC-g-PCysMA) as functional entities in combination with cellulose fibers and commercial grade microfibrillated cellulose. The presence of active sites such as hydroxyl, carbonyl, thioethers, and amines, gave the membranes high adsorption capacities for the metal ions Au (III), Co (II), and Fe (III), as well as the cationic organic dye methylene blue (MB). Furthermore, the membranes served as excellent metal-free catalysts for the decolorization of dyes via hydrogenation. A 3-fold increase of the hydrogenation efficiency for cationic dyes such as rhodamine B (RhB) and methylene blue was obtained in the presence of membranes compared to NaBH4 alone. Water-based processing, the abundance of the component materials, and the multifunctional characteristics of the membranes ensure their potential as excellent candidates for water purification systems.
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Affiliation(s)
- Dimitrios Georgouvelas
- Division of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, Stockholm, SE-10691, Sweden
| | - Hani Nasser Abdelhamid
- Division of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, Stockholm, SE-10691, Sweden; Advanced Multifunctional Materials Laboratory, Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71515, Egypt
| | - Jing Li
- Division of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, Stockholm, SE-10691, Sweden
| | - Ulrica Edlund
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology, and Health, KTH Royal Institute of Technology, Teknikringen 56, Stockholm, SE-10044, Sweden.
| | - Aji P Mathew
- Division of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, Stockholm, SE-10691, Sweden.
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45
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Fouilloux H, Thomas CM. Production and Polymerization of Biobased Acrylates and Analogs. Macromol Rapid Commun 2021; 42:e2000530. [DOI: 10.1002/marc.202000530] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/23/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Hugo Fouilloux
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris Paris 75005 France
| | - Christophe M. Thomas
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris Paris 75005 France
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46
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Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
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47
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Ramesh P, Xu WL, Sorci M, Trant C, Lee S, Kilduff J, Yu M, Belfort G. Organic solvent filtration by brush membranes: Permeability, selectivity and fouling correlate with degree of SET-LRP grafting. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Hashimoto PK, Oliveira LF, Riga-Rocha BA, Machado AEH, Santana VT, Nascimento OR, Carvalho-Jr VP, Goi BE. Manganese( ii) Schiff-base-mediated reversible deactivation controlled radical polymerization of vinyl acetate. NEW J CHEM 2021. [DOI: 10.1039/d1nj00493j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The manganese Schiff-base complexes were applied in the OMRP of vinyl acetate.
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Affiliation(s)
- Patricia K. Hashimoto
- Faculdade de Ciências e Tecnologia
- UNESP – Univ. Estadual Paulista
- Presidente Prudente
- Brazil
| | - Larissa F. Oliveira
- Faculdade de Ciências e Tecnologia
- UNESP – Univ. Estadual Paulista
- Presidente Prudente
- Brazil
| | - Beatriz A. Riga-Rocha
- Faculdade de Ciências e Tecnologia
- UNESP – Univ. Estadual Paulista
- Presidente Prudente
- Brazil
| | | | - Vinicius T. Santana
- CEITEC – Central European Institute of Technology
- Brno University of Technology
- 61200 Brno
- Czech Republic
| | | | | | - Beatriz E. Goi
- Faculdade de Ciências e Tecnologia
- UNESP – Univ. Estadual Paulista
- Presidente Prudente
- Brazil
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Liu G, Zeng Y, Lv T, Mao T, Wei Y, Jia S, Gou Y, Tao L. High-throughput preparation of radioprotective polymers via Hantzsch's reaction for in vivo X-ray damage determination. Nat Commun 2020; 11:6214. [PMID: 33277480 PMCID: PMC7718248 DOI: 10.1038/s41467-020-20027-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 11/09/2020] [Indexed: 02/07/2023] Open
Abstract
Radioprotectors for acute injuries caused by large doses of ionizing radiation are vital to national security, public health and future development of humankind. Here, we develop a strategy to explore safe and efficient radioprotectors by combining Hantzsch's reaction, high-throughput methods and polymer chemistry. A water-soluble polymer with low-cytotoxicity and an excellent anti-radiation capability has been achieved. In in vivo experiments, this polymer is even better than amifostine, which is the only approved radioprotector for clinical applications, in effectively protecting zebrafish embryos from fatally large doses of ionizing radiation (80 Gy X-ray). A mechanistic study also reveals that the radioprotective ability of this polymer originates from its ability to efficiently prevent DNA damage due to high doses of radiation. This is an initial attempt to explore polymer radioprotectors via a multi-component reaction. It allows exploiting functional polymers and provides the underlying insights to guide the design of radioprotective polymers.
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Affiliation(s)
- Guoqiang Liu
- The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yuan Zeng
- The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Tong Lv
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Tengfei Mao
- The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha, 410073, China
| | - Yen Wei
- The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Shunji Jia
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Yanzi Gou
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha, 410073, China
| | - Lei Tao
- The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China.
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50
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Kurakula M, Rao GSNK. Pharmaceutical assessment of polyvinylpyrrolidone (PVP): As excipient from conventional to controlled delivery systems with a spotlight on COVID-19 inhibition. J Drug Deliv Sci Technol 2020; 60:102046. [PMID: 32905026 PMCID: PMC7462970 DOI: 10.1016/j.jddst.2020.102046] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/04/2020] [Accepted: 08/25/2020] [Indexed: 12/14/2022]
Abstract
Polyvinylpyrrolidone (PVP) is a water-soluble polymer obtained by polymerization of monomer N-vinylpyrrolidone. PVP is an inert, non-toxic, temperature-resistant, pH-stable, biocompatible, biodegradable polymer that helps to encapsulate and cater both hydrophilic and lipophilic drugs. These advantages enable PVP a versatile excipient in the formulation development of broad conventional to novel controlled delivery systems. PVP has tunable properties and can be used as a brace component for gene delivery, orthopedic implants, and tissue engineering applications. Based on different molecular weights and modified forms, PVP can lead to exceptional beneficial features with varying chemical properties. Graft copolymerization and other techniques assist PVP to conjugate with poorly soluble drugs that can inflate bioavailability and even introduces the desired swelling tract for their control or sustained release. The present review provides chemistry, mechanical, physicochemical properties, evaluation parameters, dewy preparation methods of PVP derivatives intended for designing conventional to controlled systems for drug, gene, and cosmetic delivery. The past and growing interest in PVP establishes it as a promising polymer to enhance the trait and performance of current generation pharmaceutical dosage forms. Furthermore, the scrutiny explores existing patents, marketed products, new and futuristic approaches of PVP that have been identified and scope for future development, characterization, and its use. The exploration spotlights the importance and role of PVP in the design of Povidone-iodine (PVP-I) and clinical trials to assess therapeutic efficacy against the COVID-19 in the current pandemic scenario.
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Affiliation(s)
- Mallesh Kurakula
- Department of Biomedical Engineering, The University of Memphis, Memphis, TN 38152, USA
| | - G S N Koteswara Rao
- College of Pharmacy, Koneru Lakshmaiah Education Foundation, Vaddeswaram, AP, 522502, India
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