1
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Siddharth K, Pérez-Mercader J. Non-Biochemical Gradient Sequence-Controlled Polymers with Tuned Kinetics and Self-Assembled Morphologies. Macromol Rapid Commun 2024:e2400392. [PMID: 39127993 DOI: 10.1002/marc.202400392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 07/29/2024] [Indexed: 08/12/2024]
Abstract
Two key challenges in the multidisciplinary field of sequence-controlled polymers are their efficient synthesis and the establishment of correlation with polymer properties. In this context, in this paper, gradient architecture in the hydrophobic tail of an amphiphile is implemented and synthesized for a fixed hydrophilic unit (polyethylene glycol, PEG), by means of two monomers (2-hydroxypropyl methacrylate, HPMA, and diacetone acrylamide, DAAM) of contrasting reactivities. The resulting non-biochemical gradient sequence-controlled polymers are generated from a one-pot, homogeneous mixture through a PET-RAFT-PISA (photoinduced electron/energy transfer-reversible addition-fragmentation chain transfer-polymerization-induced self-assembly) method. In addition, the initial concentration ratio of the monomers in the gradient is varied as an input for a set of fixed experimental parameters and conditions, and its correlation with kinetics, gradient and self-assembled morphologies is established, as the output of the process. These results are extensively corroborated via nuclear magnetic resonance (NMR) spectroscopy analysis, together with transmission electron microscopy (TEM) images, dynamic light scattering (DLS), and gel permeation chromatography (GPC) experiments. These results have implications for chemical computation carried out by PISA, programmable self-assembly, information storage, biomimetics, origins of life and synthetic protocell studies.
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Affiliation(s)
- Kumar Siddharth
- Department of Earth and Planetary Sciences and Harvard Origins of Life Initiative, Harvard University, Cambridge, MA, 02138, USA
| | - Juan Pérez-Mercader
- Department of Earth and Planetary Sciences and Harvard Origins of Life Initiative, Harvard University, Cambridge, MA, 02138, USA
- The Santa Fe Institute, Santa Fe, NM, 87501, USA
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2
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Luo X, Zhai Y, Wang P, Tian B, Liu S, Li J, Yang C, Strehmel V, Li S, Matyjaszewski K, Yilmaz G, Strehmel B, Chen Z. Light-Mediated Polymerization Catalyzed by Carbon Nanomaterials. Angew Chem Int Ed Engl 2024; 63:e202316431. [PMID: 38012084 DOI: 10.1002/anie.202316431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 11/29/2023]
Abstract
Carbon nanomaterials, specifically carbon dots and carbon nitrides, play a crucial role as heterogeneous photoinitiators in both radical and cationic polymerization processes. These recently introduced materials offer promising solutions to the limitations of current homogeneous systems, presenting a novel approach to photopolymerization. This review highlights the preparation and photocatalytic performance of these nanomaterials, emphasizing their application in various polymerization techniques, including photoinduced i) free radical, ii) RAFT, iii) ATRP, and iv) cationic photopolymerization. Additionally, it discusses their potential in addressing contemporary challenges and explores prospects in this field. Moreover, carbon nitrides, in particular, exhibit exceptional oxygen tolerance, underscoring their significance in radical polymerization processes and allowing their applications such as 3D printing, surface modification of coatings, and hydrogel engineering.
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Affiliation(s)
- Xiongfei Luo
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
- Northeast Forestry University, College of Chemistry, Chemical Engineering and Resource Utilization, Hexing Road 26, Harbin, 150040, China
| | - Yingxiang Zhai
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
| | - Ping Wang
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
- Niederrhein University of Applied Sciences, Department of Chemistry, Institute for Coatings and Surface Chemistry, Adlerstr. 1, D-47798, Krefeld, Germany
| | - Bing Tian
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
| | - Shouxin Liu
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
| | - Jian Li
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
| | - Chenhui Yang
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
| | - Veronika Strehmel
- Niederrhein University of Applied Sciences, Department of Chemistry, Institute for Coatings and Surface Chemistry, Adlerstr. 1, D-47798, Krefeld, Germany
| | - Shujun Li
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA-15213, USA
| | - Gorkem Yilmaz
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA-15213, USA
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Bernd Strehmel
- Niederrhein University of Applied Sciences, Department of Chemistry, Institute for Coatings and Surface Chemistry, Adlerstr. 1, D-47798, Krefeld, Germany
| | - Zhijun Chen
- Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Hexing Road 26, Harbin, 150040, China
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3
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Yamamoto H, Yamaoka K, Shinohara A, Shibata K, Takao KI, Ogura A. Red-light-mediated Barton decarboxylation reaction and one-pot wavelength-selective transformations. Chem Sci 2023; 14:11243-11250. [PMID: 37860659 PMCID: PMC10583705 DOI: 10.1039/d3sc03643j] [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: 07/15/2023] [Accepted: 09/18/2023] [Indexed: 10/21/2023] Open
Abstract
In organic chemistry, selecting mild conditions for transformations and saving energy are increasingly important for achieving sustainable development goals. Herein, we describe a red-light-mediated Barton decarboxylation using readily available red-light-emitting diodes as the energy source and zinc tetraphenylporphyrin as the catalyst, avoiding explosive or hazardous reagents or external heating. Mechanistic studies suggest that the reaction probably proceeds via Dexter energy transfer between the activated catalyst and the Barton ester. Furthermore, a one-pot wavelength-selective reaction within the visible light range is developed in combination with a blue-light-mediated photoredox reaction, demonstrating the compatibility of two photochemical transformations based on mechanistic differences. This one-pot process expands the limits of the decarboxylative Giese reaction beyond polarity matching.
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Affiliation(s)
- Hiroki Yamamoto
- Department of Applied Chemistry, Keio University Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kohei Yamaoka
- Department of Applied Chemistry, Keio University Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Ann Shinohara
- Department of Applied Chemistry, Keio University Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kouhei Shibata
- Department of Applied Chemistry, Keio University Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Ken-Ichi Takao
- Department of Applied Chemistry, Keio University Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Akihiro Ogura
- Department of Applied Chemistry, Keio University Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
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4
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Tanaka J, Li J, Clouthier SM, You W. Step-growth polymerization by the RAFT process. Chem Commun (Camb) 2023. [PMID: 37287313 DOI: 10.1039/d3cc01087b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Reversible Addition-Fragmentation Chain Transfer (RAFT) step-growth polymerization is an emerging method that synergistically combines the benefits of RAFT polymerization (functional group and user-friendly nature) and step-growth polymerization (versatility of the polymer backbone). This new polymerization method is generally achieved by using bifunctional reagents of monomer and Chain Transfer Agent (CTA), that efficiently yield Single Monomer Unit Insertion (SUMI) adducts under stoichiometrically balanced conditions. This review covers a brief history of the RAFT-SUMI process and its transformation into RAFT step-growth polymerization, followed by a comprehensive discussion of various RAFT step-growth systems. Furthermore, characterizing the molecular weight evolution of step-growth polymerization is elaborated based on the Flory model. Finally, a formula is introduced to describe the efficiency of the RAFT-SUMI process, assuming rapid chain transfer equilibrium. Examples of reported RAFT step-growth and SUMI systems are then categorized based on the driving force.
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Affiliation(s)
- Joji Tanaka
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.
| | - Jiajia Li
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | | | - Wei You
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.
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5
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Synthesis of soft-core hard-shell nanoparticles by visible PET-RAFT polymerization in dispersion conditions. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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6
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Yu C, Song J, Kim TI, Lee Y, Kwon Y, Kim J, Park J, Choi J, Doh J, Min SK, Cho S, Kwon MS. Silver Sulfide Nanocrystals as a Biocompatible and Full-Spectrum Photocatalyst for Efficient Light-Driven Polymerization under Aqueous and Ambient Conditions. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Changhoon Yu
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Jaejung Song
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Tae In Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yungyeong Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Yonghwan Kwon
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jongkyoung Kim
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jeehun Park
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinho Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Junsang Doh
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung Kyu Min
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Seungho Cho
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Min Sang Kwon
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
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7
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Evolution of Molar Mass Distributions Using a Method of Partial Moments: Initiation of RAFT Polymerization. Polymers (Basel) 2022; 14:polym14225013. [PMID: 36433139 PMCID: PMC9696826 DOI: 10.3390/polym14225013] [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: 09/26/2022] [Revised: 10/27/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022] Open
Abstract
We describe a method of partial moments devised for accurate simulation of the time/conversion evolution of polymer composition and molar mass. Expressions were derived that enable rigorous evaluation of the complete molar mass and composition distribution for shorter chain lengths (e.g., degree of polymerization, Xn = N < 200 units) while longer chains (Xn ≥ 200 units) are not neglected, rather they are explicitly considered in terms of partial moments of the molar mass distribution, μxN(P)=∑n=N+1∞nx[Pn] (where P is a polymeric species and n is its’ chain length). The methodology provides the exact molar mass distribution for chains Xn < N, allows accurate calculation of the overall molar mass averages, the molar mass dispersity and standard deviations of the distributions, provides closure to what would otherwise be an infinite series of differential equations, and reduces the stiffness of the system. The method also allows for the inclusion of the chain length dependence of the rate coefficients associated with the various reaction steps (in particular, termination and propagation) and the various side reactions that may complicate initiation or initialization. The method is particularly suited for the detailed analysis of the low molar mass portion of molar mass distributions of polymers formed by radical polymerization with reversible addition-fragmentation chain transfer (RAFT) and is relevant to designing the RAFT-synthesis of sequence-defined polymers. In this paper, we successfully apply the method to compare the behavior of thermally initiated (with an added dialkyldiazene initiator) and photo-initiated (with a RAFT agent as a direct photo-iniferter) RAFT-single-unit monomer insertion (RAFT-SUMI) and oligomerization of N,N-dimethylacrylamide (DMAm).
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8
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Wanasinghe SV, Sun M, Yehl K, Cuthbert J, Matyjaszewski K, Konkolewicz D. PET-RAFT Increases Uniformity in Polymer Networks. ACS Macro Lett 2022; 11:1156-1161. [PMID: 36069541 DOI: 10.1021/acsmacrolett.2c00448] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photoinduced electron/energy transfer (PET)-reversible addition-fragmentation chain transfer polymerization (RAFT) and conventional photoinitiated RAFT were used to synthesize polymer networks. In this study, two different metal catalysts, namely, tris[2-phenylpyridinato-C2,N]iridium(III) (Ir(ppy)3) and zinc tetraphenylporphyrin (ZnTPP), were selected to generate two different catalytic pathways, one with Ir(ppy)3 proceeding through an energy-transfer pathway and one with ZnTPP proceeding through an electron-transfer pathway. These PET-RAFT systems were contrasted against a conventional photoinitated RAFT process. Mechanically robust materials were generated. Using bulk swelling ratios and degradable cross-linkers, the homogeneity of the networks was evaluated. Especially at high primary chain length and cross-link density, the PET-RAFT systems generated more uniform networks than those made by conventional RAFT, with the electron transfer-based ZnTPP giving superior results to those of Ir(ppy)3. The ability to deactivate radicals either by RAFT exchange or reversible coupling in PET RAFT was proposed as the mechanism that gave better control in PET-RAFT systems.
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Affiliation(s)
- Shiwanka V Wanasinghe
- Department of Chemistry and Biochemistry, Miami University, 651 E High Street, Oxford, Ohio 45056, United States
| | - Mingkang Sun
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Kevin Yehl
- Department of Chemistry and Biochemistry, Miami University, 651 E High Street, Oxford, Ohio 45056, United States
| | - Julia Cuthbert
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Dominik Konkolewicz
- Department of Chemistry and Biochemistry, Miami University, 651 E High Street, Oxford, Ohio 45056, United States
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9
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Foster H, Stenzel MH, Chapman R. PET-RAFT Enables Efficient and Automated Multiblock Star Synthesis. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Henry Foster
- Centre for Advanced Macromolecular Design, School of Chemistry, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular Design, School of Chemistry, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Robert Chapman
- Centre for Advanced Macromolecular Design, School of Chemistry, UNSW Sydney, Kensington, NSW 2052, Australia
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia
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10
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Martinez MR, Dworakowska S, Gorczyński A, Szczepaniak G, Bossa FDL, Matyjaszewski K. Kinetic comparison of isomeric oligo(ethylene oxide) (meth)acrylates: Aqueous polymerization of oligo(ethylene oxide) methyl ether methacrylate and methyl 2‐(oligo(ethylene oxide) methyl ether)acrylate macromonomers. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michael R. Martinez
- Department of Chemistry, Center for Macromolecular Engineering Carnegie Mellon University Pittsburgh Pennsylvania USA
| | - Sylwia Dworakowska
- Department of Chemistry, Center for Macromolecular Engineering Carnegie Mellon University Pittsburgh Pennsylvania USA
- Department of Biotechnology and Renewable Materials, Faculty of Chemical Engineering and Technology Cracow University of Technology Cracow Poland
| | - Adam Gorczyński
- Department of Chemistry, Center for Macromolecular Engineering Carnegie Mellon University Pittsburgh Pennsylvania USA
- Faculty of Chemistry Adam Mickiewicz University Poznań Poland
| | - Grzegorz Szczepaniak
- Department of Chemistry, Center for Macromolecular Engineering Carnegie Mellon University Pittsburgh Pennsylvania USA
| | - Ferdinando De Luca Bossa
- Department of Chemistry, Center for Macromolecular Engineering Carnegie Mellon University Pittsburgh Pennsylvania USA
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Center for Macromolecular Engineering Carnegie Mellon University Pittsburgh Pennsylvania USA
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11
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Wu C, Corrigan N, Lim CH, Liu W, Miyake G, Boyer C. Rational Design of Photocatalysts for Controlled Polymerization: Effect of Structures on Photocatalytic Activities. Chem Rev 2022; 122:5476-5518. [PMID: 34982536 PMCID: PMC9815102 DOI: 10.1021/acs.chemrev.1c00409] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Over the past decade, the use of photocatalysts (PCs) in controlled polymerization has brought new opportunities in sophisticated macromolecular synthesis. However, the selection of PCs in these systems has been typically based on laborious trial-and-error strategies. To tackle this limitation, computer-guided rational design of PCs based on knowledge of structure-property-performance relationships has emerged. These rational strategies provide rapid and economic methodologies for tuning the performance and functionality of a polymerization system, thus providing further opportunities for polymer science. This review provides an overview of PCs employed in photocontrolled polymerization systems and summarizes their progression from early systems to the current state-of-the-art. Background theories on electronic transitions are also introduced to establish the structure-property-performance relationships from a perspective of quantum chemistry. Typical examples for each type of structure-property relationships are then presented to enlighten future design of PCs for photocontrolled polymerization.
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Affiliation(s)
- Chenyu Wu
- Qingdao Institute for Theoretical and Computational Sciences, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | | | - Chern-Hooi Lim
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
- New Iridium Incorporated, Boulder, Colorado 80303, United States
| | - Wenjian Liu
- Qingdao Institute for Theoretical and Computational Sciences, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | - Garret Miyake
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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12
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Zhang L, Lin S, Xu J. Stereochemistry-Induced Discrimination in Reaction Kinetics of Photo-RAFT Initialization. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Lei Zhang
- Centre for Advanced Macromolecular Design, School of Chemical Engineering, UNSW, Sydney, NSW 2052, Australia
| | - Shiyang Lin
- Centre for Advanced Macromolecular Design, School of Chemical Engineering, UNSW, Sydney, NSW 2052, Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design, School of Chemical Engineering, UNSW, Sydney, NSW 2052, Australia
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13
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Ma Q, Zhang X, Jiang Y, Lin J, Graff B, Hu S, Lalevée J, Liao S. Organocatalytic PET-RAFT polymerization with a low ppm of organic photocatalyst under visible light. Polym Chem 2022. [DOI: 10.1039/d1py01431e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The development of light-mediated controlled radical polymerization has benefited from the discovery of novel photocatalysts, which could allow precise light control over the polymerization process and the production of well-defined polymers.
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Affiliation(s)
- Qiang Ma
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
| | - Xun Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Yu Jiang
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Junqiang Lin
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Bernadette Graff
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Siping Hu
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jacques Lalevée
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Saihu Liao
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China
- Beijing National Laboratory for Molecular Science, Beijing 100190, China
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14
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Thum MD, Hong D, Zeppuhar AN, Falvey DE. Visible-Light Photocatalytic Oxidation of DMSO for RAFT Polymerization †. Photochem Photobiol 2021; 97:1335-1342. [PMID: 34129686 DOI: 10.1111/php.13468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/13/2021] [Indexed: 11/28/2022]
Abstract
The solvent is an important, yet often forgotten part of a reaction mechanism. Many photochemical polymerizations are carried out using dimethyl sulfoxide (DMSO) as a way to promote the solubility of both the reactants and products, but its reactivity is rarely considered when initiation mechanisms are proposed. Herein, the oxidation of DMSO by an excited-state quinone is used to form initiating radicals resulting in the polymerization of methacrylate monomers, and the polymerization can be controlled with the addition of a chain transfer agent. This process leads to the formation of polymers with narrow molecular weight distribution, and the polymerization is able to be carried out in the presence of oxygen. A visible light absorbing substituted anthraquinone is synthesized, and nanosecond transient absorption spectroscopy is used to monitor the intermediates involved in the initiation mechanism. Photoproduct analysis indicates formation of methyl radicals as a result of DMSO oxidation. Furthermore, we show that the solvent outcompetes the chain transfer agent for interacting with the excited-state anthraquinone. These observations have a broad impact on photoinduced polymerizations performed in DMSO as many photocatalysts are strong oxidants in the excited state and are capable of reacting with the solvent. Therefore, the role of the solvent needs to be more carefully considered when proposing mechanisms for photoinduced polymerizations in DMSO.
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Affiliation(s)
- Matthew D Thum
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD
| | - Donald Hong
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD
| | - Andrea N Zeppuhar
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD
| | - Daniel E Falvey
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD
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15
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Allegrezza ML, Konkolewicz D. PET-RAFT Polymerization: Mechanistic Perspectives for Future Materials. ACS Macro Lett 2021; 10:433-446. [PMID: 35549229 DOI: 10.1021/acsmacrolett.1c00046] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In the past decade, photochemistry has emerged as a growing area in organic and polymer chemistry. Use of light to drive polymerization has advantages by imparting spatial and temporal control over the reaction. Photoinduced electron/energy transfer reversible addition-fragmentation chain transfer polymerization (PET-RAFT) has emerged as an excellent technique for developing well-defined polymers from a variety of functional monomers. However, the mechanism, of electron versus energy transfer is debated in the literature, with conflicting reports on the underlying process. This perspective focuses on the mechanistic aspects of PET-RAFT, in particular, the electron versus energy transfer pathways. The different mechanisms are evaluated, including evidence for one versus the other mechanisms. The current literature has not reached a consensus across all PET-RAFT processes, but rather, each catalytic system has unique characteristics.
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Affiliation(s)
- Michael L. Allegrezza
- Department of Chemistry and Biochemmistry, Miami University, 651 East High Street, Oxford, Ohio 45056, United States
| | - Dominik Konkolewicz
- Department of Chemistry and Biochemmistry, Miami University, 651 East High Street, Oxford, Ohio 45056, United States
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16
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Bellotti V, Simonutti R. New Light in Polymer Science: Photoinduced Reversible Addition-Fragmentation Chain Transfer Polymerization (PET-RAFT) as Innovative Strategy for the Synthesis of Advanced Materials. Polymers (Basel) 2021; 13:1119. [PMID: 33915928 PMCID: PMC8036437 DOI: 10.3390/polym13071119] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 12/16/2022] Open
Abstract
Photochemistry has attracted great interest in the last decades in the field of polymer and material science for the synthesis of innovative materials. The merging of photochemistry and reversible-deactivation radical polymerizations (RDRP) provides good reaction control and can simplify elaborate reaction protocols. These advantages open the doors to multidisciplinary fields going from composite materials to bio-applications. Photoinduced Electron/Energy Transfer Reversible Addition-Fragmentation Chain-Transfer (PET-RAFT) polymerization, proposed for the first time in 2014, presents significant advantages compared to other photochemical techniques in terms of applicability, cost, and sustainability. This review has the aim of providing to the readers the basic knowledge of PET-RAFT polymerization and explores the new possibilities that this innovative technique offers in terms of industrial applications, new materials production, and green conditions.
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Affiliation(s)
| | - Roberto Simonutti
- Department of Materials Science, Università Degli Studi di Milano-Bicocca, Via R. Cozzi, 55, 20125 Milan, Italy;
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Grishin DF, Grishin ID. Modern trends in controlled synthesis of functional polymers: fundamental aspects and practical applications. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4964] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Major trends in controlled radical polymerization (CRP) or reversible-deactivation radical polymerization (RDRP), the most efficient method of synthesis of well-defined homo- and copolymers with specified parameters and properties, are critically analyzed. Recent advances associated with the three classical versions of CRP: nitroxide mediated polymerization, reversible addition-fragmentation chain transfer polymerization and atom transfer radical polymerization, are considered. Particular attention is paid to the prospects for the application of photoinitiation and photocatalysis in CRP. This approach, which has been intensively explored recently, brings synthetic methods of polymer chemistry closer to the light-induced processes of macromolecular synthesis occurring in living organisms. Examples are given of practical application of CRP techniques to obtain industrially valuable, high-tech polymeric products.
The bibliography includes 429 references.
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18
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Zhang Z, Corrigan N, Boyer C. Effect of Thiocarbonylthio Compounds on Visible-Light-Mediated 3D Printing. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02691] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Zhiheng Zhang
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine, School of Chemical Engineering, University of New South Wales—Sydney, Sydney, NSW 2052, Australia
| | - Nathaniel Corrigan
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine, School of Chemical Engineering, University of New South Wales—Sydney, Sydney, NSW 2052, Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine, School of Chemical Engineering, University of New South Wales—Sydney, Sydney, NSW 2052, Australia
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19
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Zhang L, Liu R, Huang Z, Xu J. How does the single unit monomer insertion technique promote kinetic analysis of activation and initiation in photo-RAFT processes? Polym Chem 2021. [DOI: 10.1039/d0py01413c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The single unit monomer insertion technique provides a simple platform for the kinetic investigation of early stage of photo-RAFT process that comprises photo-activation of initial RAFT agents and addition of RAFT leaving radicals to the monomers.
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Affiliation(s)
- Lei Zhang
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
| | - Ruizhe Liu
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
| | - Zixuan Huang
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
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20
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Zhang J, Li M, He Y, Zhang X, Cui Z, Fu P, Liu M, Qiao X, Zhao Q, Pang X. From 0-dimension to 1-dimensions: Au nanocrystals as versatile plasmonic photocatalyst for broadband light induced RAFT polymerization. Polym Chem 2021. [DOI: 10.1039/d1py00088h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Gold nanoparticles and nanorods were utilized as the catalyst for photo-induced RAFT polymerization, because of their strong LSPR performance.
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21
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Rumble CA, Licari G, Vauthey E. Molecular Dynamics Simulations of Bimolecular Electron Transfer: Testing the Coulomb Term in the Weller Equation. J Phys Chem B 2020; 124:9945-9950. [PMID: 33095013 DOI: 10.1021/acs.jpcb.0c09031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Reliable estimation of the driving force for photoinduced electron transfer between neutral reactants is of utmost importance for most practical applications of these reactions. The driving force is usually calculated from the Weller equation, which contains a Coulomb term, C, whose magnitude in polar solvents is debated. We have performed umbrella sampling molecular dynamics simulations to determine C from the potentials of mean force between neutral and ionic donor/acceptor pairs of different sizes in solvents of varying polarity. According to the simulations, C in polar solvents is a factor of 2 more negative than typically calculated according to the Weller equation. Use of the π-stack contact distance in the Weller equation instead of the van der Waals radius recovers the correct value of C, but this is mostly fortuitous due to the compensating effects of overestimating the dielectric screening at contact and neglecting both charge dilution and desolvation.
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Affiliation(s)
- Christopher A Rumble
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Giuseppe Licari
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
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Nothling MD, Fu Q, Reyhani A, Allison‐Logan S, Jung K, Zhu J, Kamigaito M, Boyer C, Qiao GG. Progress and Perspectives Beyond Traditional RAFT Polymerization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001656. [PMID: 33101866 PMCID: PMC7578854 DOI: 10.1002/advs.202001656] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/17/2020] [Indexed: 05/09/2023]
Abstract
The development of advanced materials based on well-defined polymeric architectures is proving to be a highly prosperous research direction across both industry and academia. Controlled radical polymerization techniques are receiving unprecedented attention, with reversible-deactivation chain growth procedures now routinely leveraged to prepare exquisitely precise polymer products. Reversible addition-fragmentation chain transfer (RAFT) polymerization is a powerful protocol within this domain, where the unique chemistry of thiocarbonylthio (TCT) compounds can be harnessed to control radical chain growth of vinyl polymers. With the intense recent focus on RAFT, new strategies for initiation and external control have emerged that are paving the way for preparing well-defined polymers for demanding applications. In this work, the cutting-edge innovations in RAFT that are opening up this technique to a broader suite of materials researchers are explored. Emerging strategies for activating TCTs are surveyed, which are providing access into traditionally challenging environments for reversible-deactivation radical polymerization. The latest advances and future perspectives in applying RAFT-derived polymers are also shared, with the goal to convey the rich potential of RAFT for an ever-expanding range of high-performance applications.
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Affiliation(s)
- Mitchell D. Nothling
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
| | - Qiang Fu
- Centre for Technology in Water and Wastewater Treatment (CTWW)School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoNSW2007Australia
| | - Amin Reyhani
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
| | - Stephanie Allison‐Logan
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
| | - Kenward Jung
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN)School of Chemical EngineeringUNWSSydneyNSW2052Australia
| | - Jian Zhu
- College of ChemistryChemical Engineering and Material ScienceDepartment of Polymer Science and EngineeringSoochow UniversitySuzhou215123China
| | - Masami Kamigaito
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya UniversityFuro‐cho, Chikusa‐kuNagoya464‐8603Japan
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN)School of Chemical EngineeringUNWSSydneyNSW2052Australia
| | - Greg G. Qiao
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
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Allison‐Logan S, Fu Q, Sun Y, Liu M, Xie J, Tang J, Qiao GG. From UV to NIR: A Full‐Spectrum Metal‐Free Photocatalyst for Efficient Polymer Synthesis in Aqueous Conditions. Angew Chem Int Ed Engl 2020; 59:21392-21396. [DOI: 10.1002/anie.202007196] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/20/2020] [Indexed: 01/01/2023]
Affiliation(s)
- Stephanie Allison‐Logan
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
| | - Qiang Fu
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
- Centre for Technology in Water and Wastewater (CTWW) School of Civil and Environmental Engineering University of Technology Sydney Ultimo NSW 2007 Australia
| | - Yongkang Sun
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
| | - Min Liu
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
| | - Jijia Xie
- Solar Energy & Advanced Materials Research Group Department of Chemical Engineering University College London Torrington Place London WC1E JE UK
| | - Junwang Tang
- Solar Energy & Advanced Materials Research Group Department of Chemical Engineering University College London Torrington Place London WC1E JE UK
| | - Greg G. Qiao
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
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24
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Allison‐Logan S, Fu Q, Sun Y, Liu M, Xie J, Tang J, Qiao GG. From UV to NIR: A Full‐Spectrum Metal‐Free Photocatalyst for Efficient Polymer Synthesis in Aqueous Conditions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007196] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Stephanie Allison‐Logan
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
| | - Qiang Fu
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
- Centre for Technology in Water and Wastewater (CTWW) School of Civil and Environmental Engineering University of Technology Sydney Ultimo NSW 2007 Australia
| | - Yongkang Sun
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
| | - Min Liu
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
| | - Jijia Xie
- Solar Energy & Advanced Materials Research Group Department of Chemical Engineering University College London Torrington Place London WC1E JE UK
| | - Junwang Tang
- Solar Energy & Advanced Materials Research Group Department of Chemical Engineering University College London Torrington Place London WC1E JE UK
| | - Greg G. Qiao
- Polymer Science Group Department of Chemical Engineering University of Melbourne Parkville VIC 3010 Australia
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26
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Nançoz C, Rumble C, Rosspeintner A, Vauthey E. Bimolecular photoinduced electron transfer in non-polar solvents beyond the diffusion limit. J Chem Phys 2020; 152:244501. [PMID: 32610996 DOI: 10.1063/5.0012363] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Electron transfer (ET) quenching dynamics in non-polar solvents are investigated using ultrafast spectroscopy with a series of six fluorophore/quencher pairs, covering a driving force range of more than 1.3 eV. The intrinsic ET rate constants, k0, deduced from the quenching dynamics in the static regime, are of the order of 1012-1013 M-1 s-1, i.e., at least as large as in acetonitrile, and do not exhibit any marked dependence on the driving force. A combination of transient electronic and vibrational absorption spectroscopy measurements reveals that the primary product of static quenching is a strongly coupled exciplex that decays within a few picoseconds. More weakly coupled exciplexes with a longer lifetime are generated subsequently, during the dynamic, diffusion-controlled, stage of the quenching. The results suggest that static ET quenching in non-polar solvents should be viewed as an internal conversion from a locally excited state to a charge-transfer state of a supermolecule rather than as a non-adiabatic ET process.
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Affiliation(s)
- Christoph Nançoz
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Christopher Rumble
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
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27
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Olson RA, Korpusik AB, Sumerlin BS. Enlightening advances in polymer bioconjugate chemistry: light-based techniques for grafting to and from biomacromolecules. Chem Sci 2020; 11:5142-5156. [PMID: 34122971 PMCID: PMC8159357 DOI: 10.1039/d0sc01544j] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 04/28/2020] [Indexed: 12/30/2022] Open
Abstract
Photochemistry has revolutionized the field of polymer-biomacromolecule conjugation. Ligation reactions necessitate biologically benign conditions, and photons have a significant energy advantage over what is available thermally at ambient temperature, allowing for rapid and unique reactivity. Photochemical reactions also afford many degrees of control, specifically, spatio-temporal control, light source tunability, and increased oxygen tolerance. Light-initiated polymerizations, in particular photo-atom-transfer radical polymerization (photo-ATRP) and photoinduced electron/energy transfer reversible addition-fragmentation chain transfer polymerization (PET-RAFT), have been used for grafting from proteins, DNA, and cells. Additionally, the spatio-temporal control inherent to light-mediated chemistry has been utilized for grafting biomolecules to hydrogel networks for many applications, such as 3-D cell culture. While photopolymerization has clear advantages, there are factors that require careful consideration in order to obtain optimal control. These factors include the photocatalyst system, light intensity, and wavelength. This Perspective aims to discuss recent advances of photochemistry for polymer biomacromolecule conjugation and potential considerations while tailoring these systems.
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Affiliation(s)
- Rebecca A Olson
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida Gainesville Florida USA
| | - Angie B Korpusik
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida Gainesville Florida USA
| | - Brent S Sumerlin
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida Gainesville Florida USA
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28
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Thum MD, Wolf S, Falvey DE. State-Dependent Photochemical and Photophysical Behavior of Dithiolate Ester and Trithiocarbonate Reversible Addition–Fragmentation Chain Transfer Polymerization Agents. J Phys Chem A 2020; 124:4211-4222. [DOI: 10.1021/acs.jpca.0c02678] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Matthew D. Thum
- University of Maryland, College Park, Maryland 20742, United States
| | - Steven Wolf
- University of Maryland, College Park, Maryland 20742, United States
| | - Daniel E. Falvey
- University of Maryland, College Park, Maryland 20742, United States
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McClelland KP, Clemons TD, Stupp SI, Weiss EA. Semiconductor Quantum Dots Are Efficient and Recyclable Photocatalysts for Aqueous PET-RAFT Polymerization. ACS Macro Lett 2020; 9:7-13. [PMID: 35638658 DOI: 10.1021/acsmacrolett.9b00891] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This Letter describes the use of CdSe quantum dots (QDs) as photocatalysts for photoinduced electron transfer reversible addition-fragmentation chain transfer (PET-RAFT) polymerization of a series of aqueous acrylamides and acrylates. The high colloidal solubility and photostability of these QDs allowed polymerization to occur with high efficiency (>90% conversion in 2.5 h), low dispersity (PDI < 1.1), and ultralow catalyst loading (<0.5 ppm). The use of protein concentrators enabled the removal of the photocatalyst from the polymer and monomer with tolerable metal contamination (8.41 ug/g). These isolated QDs could be recycled for four separate polymerizations without a significant decrease in efficiency. By changing the pore size of the protein concentrators, the QDs and polymer could be separated from the remaining monomer, allowing for the synthesis of block copolymers using a single batch of QDs with minimal purification steps and demonstrating the fidelity of chain ends.
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Affiliation(s)
| | - Tristan D. Clemons
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, United States
| | - Samuel I. Stupp
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, United States
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Martinez MR, Sobieski J, Lorandi F, Fantin M, Dadashi-Silab S, Xie G, Olszewski M, Pan X, Ribelli TG, Matyjaszewski K. Understanding the Relationship between Catalytic Activity and Termination in photoATRP: Synthesis of Linear and Bottlebrush Polyacrylates. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b02397] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Michael R. Martinez
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Julian Sobieski
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Francesca Lorandi
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Marco Fantin
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Sajjad Dadashi-Silab
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Guojun Xie
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Mateusz Olszewski
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Xiangcheng Pan
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Thomas G. Ribelli
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Song Y, Kim Y, Noh Y, Singh VK, Behera SK, Abudulimu A, Chung K, Wannemacher R, Gierschner J, Lüer L, Kwon MS. Organic Photocatalyst for ppm-Level Visible-Light-Driven Reversible Addition–Fragmentation Chain-Transfer (RAFT) Polymerization with Excellent Oxygen Tolerance. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00940] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yuna Song
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
| | - Youngmu Kim
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
| | - Yeonjin Noh
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
| | - Varun Kumar Singh
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
| | - Santosh Kumar Behera
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Calle Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
| | - Abasi Abudulimu
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Calle Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
| | - Kyeongwoon Chung
- 3D Printing Materials Center, Korea Institute of Materials Science (KIMS), Changwon 51508, South Korea
| | - Reinhold Wannemacher
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Calle Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
| | - Johannes Gierschner
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Calle Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
| | - Larry Lüer
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Calle Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
| | - Min Sang Kwon
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea
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Beckwith JS, Lang B, Grilj J, Vauthey E. Ion-Pair Dynamics upon Photoinduced Electron Transfer Monitored by Pump-Pump-Probe Spectroscopy. J Phys Chem Lett 2019; 10:3688-3693. [PMID: 31194559 DOI: 10.1021/acs.jpclett.9b01431] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The excited-state dynamics of the radical anion of perylene (Pe) generated upon bimolecular photoinduced electron transfer (PET) with a donor was investigated using broadband pump-pump-probe spectroscopy. It was found to depend on the age of the anion, that is, on the time interval between the first pump pulse that triggers PET and the second one that excites the ensuing Pe anion (Pe•-). These differences, observed in acetonitrile but not in tetrahydrofuran, report on the evolution of the PET product from an ion pair to free ions. Two photoinduced charge recombination pathways of the ion pair to the neutral Pe*(S1) + donor state were identified: one occurring in a few picoseconds from Pe•-*(D1) and one taking place within 100-200 fs from Pe•-*(D n>1). Both processes are sensitive to the interionic distance over different length scales and thus serve as molecular rulers.
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Affiliation(s)
- Joseph S Beckwith
- Department of Physical Chemistry , University of Geneva , 30 Quai Ernest-Ansermet , CH-1211 Geneva , Switzerland
| | - Bernhard Lang
- Department of Physical Chemistry , University of Geneva , 30 Quai Ernest-Ansermet , CH-1211 Geneva , Switzerland
| | - Jakob Grilj
- Department of Physical Chemistry , University of Geneva , 30 Quai Ernest-Ansermet , CH-1211 Geneva , Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry , University of Geneva , 30 Quai Ernest-Ansermet , CH-1211 Geneva , Switzerland
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