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Ghobashy MM, Elbarbary AM, El-Sawy NM, Hosni HM. Radiation synthesis of acrylic acid onto poly(tetraflouroethylene-perflourovinyl ether) film: Chemical modifications and electrical conductivity. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1309254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mohamed Mohamady Ghobashy
- Radiation Research of Polymer Chemistry dept, National Center for Radiation Research and Technology, Atomic Energy Authority, Cairo, Egypt
| | - Ahmed M. Elbarbary
- Radiation Research of Polymer Chemistry dept, National Center for Radiation Research and Technology, Atomic Energy Authority, Cairo, Egypt
| | - Naeem M. El-Sawy
- Radiation Research of Polymer Chemistry dept, National Center for Radiation Research and Technology, Atomic Energy Authority, Cairo, Egypt
| | - Hany M. Hosni
- Department of Solid State Physics, National Center for Radiation Research and Technology, Atomic Energy Authority, Cairo, Egypt
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Pawar AA, Halivni S, Waiskopf N, Ben-Shahar Y, Soreni-Harari M, Bergbreiter S, Banin U, Magdassi S. Rapid Three-Dimensional Printing in Water Using Semiconductor-Metal Hybrid Nanoparticles as Photoinitiators. NANO LETTERS 2017; 17:4497-4501. [PMID: 28617606 DOI: 10.1021/acs.nanolett.7b01870] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Additive manufacturing processes enable fabrication of complex and functional three-dimensional (3D) objects ranging from engine parts to artificial organs. Photopolymerization, which is the most versatile technology enabling such processes through 3D printing, utilizes photoinitiators that break into radicals upon light absorption. We report on a new family of photoinitiators for 3D printing based on hybrid semiconductor-metal nanoparticles. Unlike conventional photoinitiators that are consumed upon irradiation, these particles form radicals through a photocatalytic process. Light absorption by the semiconductor nanorod is followed by charge separation and electron transfer to the metal tip, enabling redox reactions to form radicals in aerobic conditions. In particular, we demonstrate their use in 3D printing in water, where they simultaneously form hydroxyl radicals for the polymerization and consume dissolved oxygen that is a known inhibitor. We also demonstrate their potential for two-photon polymerization due to their giant two-photon absorption cross section.
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Affiliation(s)
- Amol Ashok Pawar
- The Institute of Chemistry, the Hebrew University of Jerusalem , Edmond J. Safra campus, Givat Ram, Jerusalem, 91904, Israel
| | - Shira Halivni
- The Institute of Chemistry, the Hebrew University of Jerusalem , Edmond J. Safra campus, Givat Ram, Jerusalem, 91904, Israel
| | - Nir Waiskopf
- The Institute of Chemistry, the Hebrew University of Jerusalem , Edmond J. Safra campus, Givat Ram, Jerusalem, 91904, Israel
| | - Yuval Ben-Shahar
- The Institute of Chemistry, the Hebrew University of Jerusalem , Edmond J. Safra campus, Givat Ram, Jerusalem, 91904, Israel
| | | | | | - Uri Banin
- The Institute of Chemistry, the Hebrew University of Jerusalem , Edmond J. Safra campus, Givat Ram, Jerusalem, 91904, Israel
| | - Shlomo Magdassi
- The Institute of Chemistry, the Hebrew University of Jerusalem , Edmond J. Safra campus, Givat Ram, Jerusalem, 91904, Israel
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Lobry E, BT Bah AS, Vidal L, Oliveros E, Braun AM, Criqui A, Chemtob A. Colloidal and Supported TiO2
: Toward Nonextractable and Recyclable Photocatalysts for Radical Polymerizations in Aqueous Dispersed Media. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600150] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Emeline Lobry
- Laboratory of Macromolecular Photochemistry and Engineering; University of Haute-Alsace; 3 rue Alfred Werner 68093 Mulhouse Cedex France
| | - Abdoul Salam BT Bah
- Laboratory of Macromolecular Photochemistry and Engineering; University of Haute-Alsace; 3 rue Alfred Werner 68093 Mulhouse Cedex France
| | - Loïc Vidal
- Institut de Science des Matériaux de Mulhouse; CNRS UMR 7361; University of Haute-Alsace; 15 rue Jean Starcky 68057 Mulhouse France
| | - Esther Oliveros
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique (IMRCP); UMR 5623-CNRS/UPS; Université Toulouse III Paul Sabatier; 118, route de Narbonne 31062 Toulouse Cedex 9 France
| | - André M. Braun
- Engler-Bunte-Institute; Karlsruhe Institute of Technology; 76131 Karlsruhe Germany
| | - Adrien Criqui
- Mäder Research; MADER GROUP; 130 rue de la Mer Rouge 68200 Mulhouse France
| | - Abraham Chemtob
- Institut de Science des Matériaux de Mulhouse; CNRS UMR 7361; University of Haute-Alsace; 15 rue Jean Starcky 68057 Mulhouse France
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Kiskan B, Zhang J, Wang X, Antonietti M, Yagci Y. Mesoporous Graphitic Carbon Nitride as a Heterogeneous Visible Light Photoinitiator for Radical Polymerization. ACS Macro Lett 2012; 1:546-549. [PMID: 35607058 DOI: 10.1021/mz300116w] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The use mesoporous graphitic carbon nitride (mpg-C3N4) in conjunction with tertiary amines as initiators in visible-light-induced free radical polymerization is described. The initiation mechanism involves photoinduced free radical generation by scavenging holes with amines and subsequent hydrogen abstraction. The efficiency of the photoinitiation is controlled by the nature of the amines and specific surface area of the carbon nitride powder. Apparently, amines with higher basicity and available hydrogens provide more favorable conditions for the photoinitiation process. Due to its heterogeneous nature, the photoinitiator preserves its photoinitiation activity after the polymerization and can easily be separated and used for further polymerizations.
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Affiliation(s)
- Baris Kiskan
- Department of Colloid
Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany
- Department of Chemistry, Istanbul Technical University, 34469,
Maslak, Istanbul, Turkey
| | - Jinshui Zhang
- Department of Colloid
Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany
- Research Institute
of Photocatalysis, State Key Laboratory Breeding Base
of Photocatalysis, Fuzhou University, 350002,
Fuzhou, China
| | - Xinchen Wang
- Department of Colloid
Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany
- Research Institute
of Photocatalysis, State Key Laboratory Breeding Base
of Photocatalysis, Fuzhou University, 350002,
Fuzhou, China
| | - Markus Antonietti
- Department of Colloid
Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany
| | - Yusuf Yagci
- Department of Colloid
Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany
- Department of Chemistry, Istanbul Technical University, 34469,
Maslak, Istanbul, Turkey
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Novel photopolymerizations initiated by alkyl radicals generated from photocatalyzed decarboxylation of carboxylic acids over oxide semiconductor nanoparticles: Extended photo-Kolbe reactions. J Photochem Photobiol A Chem 2009. [DOI: 10.1016/j.jphotochem.2008.10.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Weng Z, Ni X. Oxidative polymerization of pyrrole photocatalyzed by TiO2nanoparticles and interactions in the composites. J Appl Polym Sci 2008. [DOI: 10.1002/app.28636] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yang D, Ni X, Chen W, Weng Z. The observation of photo-Kolbe reaction as a novel pathway to initiate photocatalytic polymerization over oxide semiconductor nanoparticles. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2007.10.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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