1
|
Sima W, Liang C, Sun P, Yang M, Zhu C, Yuan T, Liu F, Zhao M, Shao Q, Yin Z, Deng Q. Novel Smart Insulating Materials Achieving Targeting Self-Healing of Electrical Trees: High Performance, Low Cost, and Eco-Friendliness. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33485-33495. [PMID: 34232014 DOI: 10.1021/acsami.1c07469] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
It remains challenging to promptly inhibit and autonomically heal electrical trees inside insulating dielectrics, which are caused by sustained strong electrical fields and substantially shorten electronic device lifetimes and even cause premature failure of electrical equipment. Therefore, we demonstrate a magnetically targeted ultraviolet (UV)-induced polymerization functional microcapsule (MTUF-MC) to endow insulating materials with physical and electrical dual-damage self-healing capabilities. Specifically, Fe3O4@SiO2 and TiO2 nanoparticles, which serve as magnetic targets and UV shields (thereby preventing the healing agent from prematurely triggering), constitute a functional microcapsule shell, ensuring a low dopant concentration and excellent self-healing ability of the epoxy composites without affecting the intrinsic performance of the matrix. By exploiting in situ electroluminescence originating from electrical trees, UV-induced polymerization of healing agent is handily triggered without any applying external stimuli to intelligently, contactlessly, and autonomously self-healing electrical trees inside insulating dielectrics.
Collapse
Affiliation(s)
- Wenxia Sima
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Chen Liang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Potao Sun
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Ming Yang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Chun Zhu
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, People's Republic of China
| | - Tao Yuan
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Fengqi Liu
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Mingke Zhao
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Qianqiu Shao
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Ze Yin
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Qin Deng
- Analytical and Testing Center, Chongqing University, Chongqing 400030, People's Republic of China
| |
Collapse
|
2
|
Noè C, Hakkarainen M, Sangermano M. Cationic UV-Curing of Epoxidized Biobased Resins. Polymers (Basel) 2020; 13:E89. [PMID: 33379390 PMCID: PMC7795534 DOI: 10.3390/polym13010089] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 11/17/2022] Open
Abstract
Epoxy resins are among the most important building blocks for fabrication of thermosets for many different applications thanks to their superior thermo-mechanical properties and chemical resistance. The recent concerns on the environmental problems and the progressive depletion of petroleum feedstocks have drawn the research interest in finding biobased alternatives. Many curing techniques can be used to obtain the final crosslinked thermoset networks. The UV-curing technology can be considered the most environmentally friendly because of the absence of volatile organic compound (VOC) emissions and mild curing conditions. This review provides an overview of the state of the art of bio-based cationic UV-curable epoxy resins. Particular focus has been given to the sources of the bio-based epoxy monomers and the applications of the obtained products.
Collapse
Affiliation(s)
- Camilla Noè
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia, C.so Duca Degli Abruzzi 24, 10129 Torino, Italy;
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden;
| | - Marco Sangermano
- Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia, C.so Duca Degli Abruzzi 24, 10129 Torino, Italy;
| |
Collapse
|
3
|
|
4
|
|
5
|
Design of Iodonium Salts for UV or Near-UV LEDs for Photoacid Generator and Polymerization Purposes. Molecules 2019; 25:molecules25010149. [PMID: 31905900 PMCID: PMC6982746 DOI: 10.3390/molecules25010149] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 12/27/2019] [Indexed: 11/16/2022] Open
Abstract
Iodonium salts are well established photoacid generators, cationic photoinitiators, as well as additives commonly used in photoredox catalytic cycles. However, as a strong limitation, iodonium salts are characterized by low light absorption properties for λ > 300 nm so that these latter cannot be activated with cheap, safe, and eco-friendly near UV or even visible light emitting diodes (LEDs). To overcome this drawback, the covalent linkage of an iodonium salt to a chromophore absorbing at longer wavelength is actively researched. With aim at red-shifting the absorption spectrum of the iodonium salt, the synthesis of new compounds combining within a unique chemical structure both the chromophore (here the naphthalimide scaffold) and the iodonium salt is presented. By mean of this strategy, a polymerization could be initiated at 365 nm with the modified iodonium salts whereas no polymerization could be induced with the benchmark iodonium salt i.e., Speedcure 938 at this specific wavelength. To examine the effect of the counter-anion on the photoinitiating ability of these different salts, five different counter-anions were used. Comparison between the different anions revealed the bis(trifluoromethane)sulfonimide salt to exhibit the best photoinitiating ability in both the free radical polymerization of acrylates and the cationic polymerization of epoxides. To support the experimental results, molecular orbital calculations have been carried out. By theoretical calculations, the initiating species resulting from the photocleavage of the iodonium salts could be determined. The cleavage selectivity and the photochemical reactivity of the new iodoniums are also discussed.
Collapse
|
6
|
Invernizzi M, Suriano R, Muscatello A, Turri S, Levi M. Near‐visible stereolithography of a low shrinkage cationic/free‐radical photopolymer blend and its nanocomposite. J Appl Polym Sci 2019. [DOI: 10.1002/app.48333] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marta Invernizzi
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32, 20133 Milan Italy
| | - Raffaella Suriano
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32, 20133 Milan Italy
| | - Allegra Muscatello
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32, 20133 Milan Italy
| | - Stefano Turri
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32, 20133 Milan Italy
| | - Marinella Levi
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32, 20133 Milan Italy
| |
Collapse
|
7
|
New Horizons in Cationic Photopolymerization. Polymers (Basel) 2018; 10:polym10020136. [PMID: 30966172 PMCID: PMC6414887 DOI: 10.3390/polym10020136] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 01/26/2018] [Accepted: 01/30/2018] [Indexed: 11/16/2022] Open
Abstract
In this review, we report some recent advances and new horizons in UV-induced cationic photopolymerization. In particular, after a brief introduction on the discovery and affirmation of the cationic photopolymerization process, new efforts in the synthesis of cationic photoinitiators are reported. Subsequently, an interesting and absolutely new application is reported, related to the combination of Radical-Induced Cationic Photopolymerization with Frontal Polymerization, achieving the cross-linking of epoxy composites.
Collapse
|
8
|
Sahin M, Krawczyk KK, Roszkowski P, Wang J, Kaynak B, Kern W, Schlögl S, Grützmacher H. Photoactive silica nanoparticles: Influence of surface functionalization on migration and kinetics of radical-induced photopolymerization reactions. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.11.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
9
|
Synthesis and evaluation of new radical photoinitiators bearing trialkoxysilyl groups for surface immobilization. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.09.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
10
|
Christmann J, Shi S, Ibrahim A, Ley C, Croutxé-Barghorn C, Bessières M, Allonas X. Mechanistic Investigation of a Dual Bicyclic Photoinitiating System for Synthesis of Organic–Inorganic Hybrid Materials. J Phys Chem B 2017; 121:1972-1981. [DOI: 10.1021/acs.jpcb.6b11829] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Julien Christmann
- Laboratory
of Macromolecular Photochemistry and Engineering, University of Haute-Alsace, 3b rue Alfred Werner, 68093 Mulhouse, France
| | - Suqing Shi
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and College of Chemistry & Material Science, Northwest University, Xi’an 710069, PR China
| | - Ahmad Ibrahim
- Laboratory
of Macromolecular Photochemistry and Engineering, University of Haute-Alsace, 3b rue Alfred Werner, 68093 Mulhouse, France
| | - Christian Ley
- Laboratory
of Macromolecular Photochemistry and Engineering, University of Haute-Alsace, 3b rue Alfred Werner, 68093 Mulhouse, France
| | - Céline Croutxé-Barghorn
- Laboratory
of Macromolecular Photochemistry and Engineering, University of Haute-Alsace, 3b rue Alfred Werner, 68093 Mulhouse, France
| | - Marjolaine Bessières
- Laboratory
of Macromolecular Photochemistry and Engineering, University of Haute-Alsace, 3b rue Alfred Werner, 68093 Mulhouse, France
| | - Xavier Allonas
- Laboratory
of Macromolecular Photochemistry and Engineering, University of Haute-Alsace, 3b rue Alfred Werner, 68093 Mulhouse, France
| |
Collapse
|
11
|
Radl S, Roppolo I, Pölzl K, Ast M, Spreitz J, Griesser T, Kern W, Schlögl S, Sangermano M. Light triggered formation of photo-responsive epoxy based networks. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.12.070] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
12
|
Davidson K, Hadley PC. Water-developable photoresists employing onium salt photoinitiators. HIGH PERFORM POLYM 2016. [DOI: 10.1088/0954-0083/7/4/012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Aromatic onium salts are known compounds with well understood photoactivity. Their use as acid-generating species has, in the last few years, improved the performance of photoresists, particularly for microelectronics applications. There has, however, been little research dedicated to the use of these photoinitators in aqueousrdevelopable resists. This work investigates the feasibility of employing onium salts in the formulation of resists suitable for aqueous development. The ability of the onium salts to photoinitiate the cationic polymerization or cross-linking of epoxide residues was exploited using water-soluble or water-dispersible copolymers containing glycidyl methacrylate (GMA). The comonomers included N-vinyl pyrrolidinone (NVP), NN-dimethylacrylamide (DMAc) and 2-hydroxyethyI methacrylate (HEMA). Various copolymers were prepared by radical copolymerization to low conversion, typically in chloroform. Several onium salts were prepared by literature methods and their efficiency examined using a model copolymer. The photoacid generator (PAG) that performed best was then used in the examination of the aqueous systems.
Collapse
Affiliation(s)
| | - Philip C Hadley
- The Polymer Centre, School of Physics and Chemistry, Lancaster University, Lancaster LAI 4YA. UK
| |
Collapse
|
13
|
Vidil T, Tournilhac F, Musso S, Robisson A, Leibler L. Control of reactions and network structures of epoxy thermosets. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2016.06.003] [Citation(s) in RCA: 184] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
14
|
Zhang J, Xiao P, Dietlin C, Campolo D, Dumur F, Gigmes D, Morlet-Savary F, Fouassier JP, Lalevée J. Cationic Photoinitiators for Near UV and Visible LEDs: A Particular Insight into One-Component Systems. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201500546] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jing Zhang
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15 rue Jean Starcky 68057 Mulhouse Cedex France
| | - Pu Xiao
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15 rue Jean Starcky 68057 Mulhouse Cedex France
- Centre for Advanced Macromolecular Design; School of Chemistry; The University of New South Wales; Sydney Australia
| | - Celine Dietlin
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15 rue Jean Starcky 68057 Mulhouse Cedex France
| | - Damien Campolo
- Institut de Chimie Radicalaire ICR - UMR CNRS 7273; Aix-Marseille Université équipe CROPS; case 542, avenue Escadrille Normandie-Niemen 13397 Marseille Cedex 20 France
| | - Frederic Dumur
- Institut de Chimie Radicalaire ICR - UMR CNRS 7273; Aix-Marseille Université équipe CROPS; case 542, avenue Escadrille Normandie-Niemen 13397 Marseille Cedex 20 France
| | - Didier Gigmes
- Institut de Chimie Radicalaire ICR - UMR CNRS 7273; Aix-Marseille Université équipe CROPS; case 542, avenue Escadrille Normandie-Niemen 13397 Marseille Cedex 20 France
| | - Fabrice Morlet-Savary
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15 rue Jean Starcky 68057 Mulhouse Cedex France
| | - Jean-Pierre Fouassier
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15 rue Jean Starcky 68057 Mulhouse Cedex France
| | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15 rue Jean Starcky 68057 Mulhouse Cedex France
| |
Collapse
|
15
|
Inhibition effect of N,N-diglycidyl-4-glycidyloxy aniline on photosensitized cationic polymerization of formulations involving resorcinol diglycidyl ether and poly(propylene glycol)diglycidyl ether. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
16
|
Cook WD, Chen F. Enhanced visible radiation photopolymerization of dimethacrylates with the three component thioxanthone (CPTXO)–amine–iodonium salt system. Polym Chem 2015. [DOI: 10.1039/c4py01561d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The three component thioxanthone/iodonium/amine visible light photoinitiator system is four times more efficient due to irreversible oxidation of the ketyl and the amine radicals by the iodonium salt and the regeneration of the thioxanthone and produce twice as many active radicals.
Collapse
Affiliation(s)
- Wayne D. Cook
- Department of Materials Engineering
- Wellington Road
- Monash University
- Victoria 3800
- Australia
| | - Fei Chen
- Department of Materials Engineering
- Wellington Road
- Monash University
- Victoria 3800
- Australia
| |
Collapse
|
17
|
Dadashi-Silab S, Aydogan C, Yagci Y. Shining a light on an adaptable photoinitiator: advances in photopolymerizations initiated by thioxanthones. Polym Chem 2015. [DOI: 10.1039/c5py01004g] [Citation(s) in RCA: 147] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review focuses on the advancements and progress in photoinitiated polymerization techniques mediated by thioxanthone (TX) and its derivatives.
Collapse
Affiliation(s)
| | - Cansu Aydogan
- Department of Chemistry
- Istanbul Technical University
- Istanbul
- Turkey
| | - Yusuf Yagci
- Department of Chemistry
- Istanbul Technical University
- Istanbul
- Turkey
- Center of Excellence for Advanced Materials Research (CEAMR) and Department of Chemistry
| |
Collapse
|
18
|
Jin M, Wu X, Xie J, Malval JP, Wan D. One/two-photon-sensitive photoacid generators based on benzene oligomer-containing D–π–A-type aryl dialkylsulfonium salts. RSC Adv 2015. [DOI: 10.1039/c5ra11350d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
D–π–A type photoacid generators with a benzene-oligomer as π-conjugated systems show high photoacid generation efficiency (ΦH+max > 0.7) and good photoinitiated polymerization abilities by 365 nm and 780 nm excitation.
Collapse
Affiliation(s)
- Ming Jin
- School of Materials & Engineering
- Tongji University
- Shanghai
- China
| | - Xingyu Wu
- School of Materials & Engineering
- Tongji University
- Shanghai
- China
| | - Jianchao Xie
- School of Materials & Engineering
- Tongji University
- Shanghai
- China
| | - Jean Pierre Malval
- Institut de Science des Matériaux de Mulhouse
- UMR CNRS 7361
- Université de Haute-Alsace
- 68057 Mulhouse
- France
| | - Decheng Wan
- School of Materials & Engineering
- Tongji University
- Shanghai
- China
| |
Collapse
|
19
|
Jin M, Hong H, Xie J, Malval JP, Spangenberg A, Soppera O, Wan D, Pu H, Versace DL, Leclerc T, Baldeck P, Poizat O, Knopf S. π-conjugated sulfonium-based photoacid generators: an integrated molecular approach for efficient one and two-photon polymerization. Polym Chem 2014. [DOI: 10.1039/c4py00424h] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
D–π–A type π-conjugated photoacid generators through the para-to-meta substitution strategy show high efficiency in photoinitiated cationic polymerization reactions at 405 nm and 800 nm excitation.
Collapse
Affiliation(s)
- Ming Jin
- School of Materials & Engineering
- Tongji University
- Shanghai, China
| | - Hong Hong
- School of Materials & Engineering
- Tongji University
- Shanghai, China
| | - Jianchao Xie
- School of Materials & Engineering
- Tongji University
- Shanghai, China
| | - Jean-Pierre Malval
- Institut de Science des Matériaux de Mulhouse
- UMR CNRS 7361
- Université de Haute-Alsace
- 68057 Mulhouse, France
| | - Arnaud Spangenberg
- Institut de Science des Matériaux de Mulhouse
- UMR CNRS 7361
- Université de Haute-Alsace
- 68057 Mulhouse, France
| | - Olivier Soppera
- Institut de Science des Matériaux de Mulhouse
- UMR CNRS 7361
- Université de Haute-Alsace
- 68057 Mulhouse, France
| | - Decheng Wan
- School of Materials & Engineering
- Tongji University
- Shanghai, China
| | - Hongting Pu
- School of Materials & Engineering
- Tongji University
- Shanghai, China
| | - Davy-Louis Versace
- Institut de Chimie et des Matériaux Paris-Est
- UMR 7182
- Université Paris-Est Créteil Val de Marne
- 94320 Thiais, France
| | - Tiffanie Leclerc
- Institut de Science des Matériaux de Mulhouse
- UMR CNRS 7361
- Université de Haute-Alsace
- 68057 Mulhouse, France
| | - Patrice Baldeck
- Laboratoire de Spectrométrie Physique
- UMR CNRS 5588. Université Joseph Fourier
- , France
| | - Olivier Poizat
- Laboratoire de Spectrochimie Infrarouge et Raman
- UMR CNRS 8516. Université des Sciences et Technologies de Lille
- , France
| | - Stephan Knopf
- Institut de Science des Matériaux de Mulhouse
- UMR CNRS 7361
- Université de Haute-Alsace
- 68057 Mulhouse, France
| |
Collapse
|
20
|
Yagci Y, Jockusch S, Turro NJ. Photoinitiated Polymerization: Advances, Challenges, and Opportunities. Macromolecules 2010. [DOI: 10.1021/ma1007545] [Citation(s) in RCA: 956] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yusuf Yagci
- Istanbul Technical University, Department of Chemistry, Maslak, Istanbul 34469, Turkey
| | - Steffen Jockusch
- Department of Chemistry, Columbia University, New York, New York 10027
| | - Nicholas J. Turro
- Department of Chemistry, Columbia University, New York, New York 10027
| |
Collapse
|
21
|
Chen S, Cook WD, Chen F. Photopolymerization of Vinyl Ether Networks Using an Iodonium Initiator: Effect of Radiation Intensity and Iodonium Concentration. Macromolecules 2009. [DOI: 10.1021/ma9006297] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shaohua Chen
- Department of Materials Engineering, Monash University, Wellington Road, Clayton 3800, Victoria, Australia
| | - Wayne D. Cook
- Department of Materials Engineering, Monash University, Wellington Road, Clayton 3800, Victoria, Australia
| | - Fei Chen
- Department of Materials Engineering, Monash University, Wellington Road, Clayton 3800, Victoria, Australia
| |
Collapse
|
22
|
Malucelli G, Bongiovanni R, Sangermano M, Ronchetti S, Priola A. Preparation and characterization of UV-cured epoxy nanocomposites based on o-montmorillonite modified with maleinized liquid polybutadienes. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.10.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
23
|
Nakashima T, Sakashita M, Nonoguchi Y, Kawai T. Sensitized Photopolymerization of an Ionic Liquid-Based Monomer by Using CdTe Nanocrystals. Macromolecules 2007. [DOI: 10.1021/ma0707988] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Takuya Nakashima
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Makiko Sakashita
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Yoshiyuki Nonoguchi
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Tsuyoshi Kawai
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| |
Collapse
|
24
|
Abdallah J, Silver M, Bidstrup Allen SA, Kohl PA. UV-induced porosity using photogenerated acids to catalyze the decomposition of sacrificial polymers templated in dielectric films. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b606438h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Sangermano M, Bongiovanni R, Priola A, Pospiech D. Fluorinated alcohols as surface-active agents in cationic photopolymerization of epoxy monomers. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.20865] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
26
|
Takahashi E, Sanda F, Endo T. Novel pyridinium salts as cationic thermal and photoinitiators and their photosensitization properties. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/pola.10186] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
27
|
Cationic photopolymerization of carbazolyl- and phenothiazinyl-containing thiiranes. J Photochem Photobiol A Chem 2002. [DOI: 10.1016/s1010-6030(01)00636-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
28
|
Gu H, Ren K, Grinevich O, Malpert JH, Neckers DC. Characterization of iodonium salts differing in the anion. J Org Chem 2001; 66:4161-4. [PMID: 11397148 DOI: 10.1021/jo0015725] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The properties and reactivity of a series of iodonium salts with different anions were compared. The nucleophilicity of the anions in such compounds can be characterized by their melting points and NMR spectra. When using Quinaldine Red as indicator and CH3CN as solvent, the acid release rate of the iodonium salts correlated very well with their polymerization results in acid-sensitive epoxides.
Collapse
Affiliation(s)
- H Gu
- Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | | | | | | | | |
Collapse
|
29
|
|
30
|
Photolysis of ((3-(Trimethylsilyl)propoxy)phenyl)phenyliodonium salts in the presence of 1-naphthol and 1-methoxynaphthalene. J Org Chem 2000; 65:3484-8. [PMID: 10843635 DOI: 10.1021/jo000058w] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Direct photolysis of ((3-trimethylsilylpropoxy)phenyl)phenyliodonium salts with different counteranions (Cl(-), SbF(6)(-), and B(C(6)F(5))(4)(-)) in methanol leads to products by both heterolytic and homolytic processes. In the presence of 1-naphthol and 1-methoxynaphthalene, products formed by a heterolytic reaction disappear, suggesting an electron-transfer process occurs between excited 1-naphthol/1-methoxynaphthalene and the iodonium salts. In the case of 1-methoxynaphthalene, three phenylated methoxynaphthalene isomers are produced. These are produced as radical coupling products from the phenyl radical and 1-methoxynaphthalene radical cation.
Collapse
|
31
|
Muneer R, Nalli TW. Use of Diaryliodonium/Phosphine Radical-Chain Chemistry for Visible Photoinitiation of Cationic Polymerizations. Trimethyl Phosphite as a Co-initiator of the Ring-Opening Polymerization of Cyclohexene Oxide. Macromolecules 1998. [DOI: 10.1021/ma980703p] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Raguib Muneer
- Chemistry Department, Winona State University, Winona, Minnesota 55987-5838
| | - Thomas W. Nalli
- Chemistry Department, Winona State University, Winona, Minnesota 55987-5838
| |
Collapse
|
32
|
Toba Y, Usui Y, Alam MM, Ito O. Onium Butyltriphenylborates as Donor−Acceptor Initiators for Sensitized Photopolymerizations of Vinyl Monomer. Macromolecules 1998. [DOI: 10.1021/ma9801319] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
33
|
Kunze A, Müller U, Tittes K, Fouassier JP, Morlet-Savary F. Triplet quenching by onium salts in polar and nonpolar solvents. J Photochem Photobiol A Chem 1997. [DOI: 10.1016/s1010-6030(97)00178-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
34
|
|