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Gencosman E, Kiliclar HC, Fiedor P, Yilmaz G, Ortyl J, Yagci Y, Kiskan B. Exploiting Visible-Light Induced Radical to Cation Transformation Pathway for Reactivity Enhanced Electrophilic Aromatic Substitution Polymerization of Heteroaromatics. Macromol Rapid Commun 2024; 45:e2300458. [PMID: 37955104 DOI: 10.1002/marc.202300458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 11/05/2023] [Indexed: 11/14/2023]
Abstract
A straightforward approach is employed to synthesize methylene-bridged poly(hetero aromatic)s based on furan, pyrrole, thiophene, and thiophene derivatives. The process involves an electrophilic aromatic substitution reaction facilitated by a visible light-initiated system consisting of manganese decacarbonyl and an iodonium salt. The approach mainly relies on the formation of halomethylium cation, the attack of this cation to heteroaromatic, regeneration of methylium cation on the heteroaromatic, and reactivity differences between halomethylium and heteroaromatic methylium cations for successful polymerizations. This innovative synthetic strategy lead to the formation of polymers with relatively high molecular weights as the stoichiometric imbalance between the comonomers increased. Accordingly, these newly obtained polymers exhibit remarkable fluorescence properties, even at excitation wavelengths as low as 330 nm. Moreover, by harnessing the halogens at chain ends of homopolymers, block copolymers are successfully synthesized, offering opportunities for tailored applications in diverse fields.
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Affiliation(s)
- Emirhan Gencosman
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey
| | - Huseyin Cem Kiliclar
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey
| | - Pawel Fiedor
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Kraków, 31-155, Poland
| | - Gorkem Yilmaz
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey
| | - Joanna Ortyl
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Kraków, 31-155, Poland
| | - Yusuf Yagci
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey
| | - Baris Kiskan
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey
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Zhang L, Li L, Chen Y, Pi J, Liu R, Zhu Y. Recent Advances and Challenges in Long Wavelength Sensitive Cationic Photoinitiating Systems. Polymers (Basel) 2023; 15:polym15112524. [PMID: 37299323 DOI: 10.3390/polym15112524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/06/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
With the advantages offered by cationic photopolymerization (CP) such as broad wavelength activation, tolerance to oxygen, low shrinkage and the possibility of "dark cure", it has attracted extensive attention in photoresist, deep curing and other fields in recent years. The applied photoinitiating systems (PIS) play a crucial role as they can affect the speed and type of the polymerization and properties of the materials formed. In the past few decades, much effort has been invested into developing cationic photoinitiating systems (CPISs) that can be activated at long wavelengths and overcome technical problems and challenges faced. In this article, the latest developments in the long wavelength sensitive CPIS under ultraviolet (UV)/visible light-emitting diodes (LED) lights are reviewed. The objective is, furthermore, to show differences as well as parallels between different PIS and future perspectives.
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Affiliation(s)
- Liping Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi 214122, China
| | - Lun Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Ying Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Junyi Pi
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Ren Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi 214122, China
| | - Yi Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi 214122, China
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Cacciuttolo B, Pascu O, Aymonier C, Pucheault M. Pd@[nBu₄][Br] as a Simple Catalytic System for N-Alkylation Reactions with Alcohols. Molecules 2016; 21:E1042. [PMID: 27517898 DOI: 10.3390/molecules21081042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 07/28/2016] [Accepted: 07/29/2016] [Indexed: 12/02/2022]
Abstract
Palladium nanoparticles, simply and briefly generated in commercial and cheap onium salts using supercritical carbon dioxide, have been found to be an effective catalytic system for additive free N-alkylation reaction using alcohols via cascade oxidation/condensation/reduction steps.
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