Photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization using titanium dioxide

Cheng, Bo-Fei; Wang, Long‐Hai; You, Ye‐Zi

doi:10.1007/s13233-016-4106-5

Cited by 38 publications

(20 citation statements)

References 21 publications

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“…Organic dyes provide another metal-free option for PET-RAFT polymerization, for this purpose eosin Y (EY), fluorescein, Rhodamine 6G, Nile red [ 32 ] have been tested, together with 10-phenylphenothiazine (PHT) [ 36 ] but only EY and PTH have proved effective. Finally, inorganic semiconducting metal oxides, including TiO 2 [ 37 ] and ZnO [ 38 ], have also been employed as photocatalysts for PET-RAFT polymerization. Titanium dioxide is particularly interesting since widely used as photocatalysts for oxygen reduction reactions and solar cells, it is also cheap, chemically stable, and with low toxicity; but nowadays only two examples are reported in the literature in terms of PET-RAFT polymerization [ 37 , 39 ].…”

Section: Form Raft To Pet-raft Polymerizationmentioning

confidence: 99%

“…Finally, inorganic semiconducting metal oxides, including TiO 2 [ 37 ] and ZnO [ 38 ], have also been employed as photocatalysts for PET-RAFT polymerization. Titanium dioxide is particularly interesting since widely used as photocatalysts for oxygen reduction reactions and solar cells, it is also cheap, chemically stable, and with low toxicity; but nowadays only two examples are reported in the literature in terms of PET-RAFT polymerization [ 37 , 39 ]. The photoredox catalysts herein described are just a part of the wide classes of PCs suitable for PET-RAFT polymerization.…”

Section: Form Raft To Pet-raft Polymerizationmentioning

confidence: 99%

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New Light in Polymer Science: Photoinduced Reversible Addition-Fragmentation Chain Transfer Polymerization (PET-RAFT) as Innovative Strategy for the Synthesis of Advanced Materials

Bellotti

Simonutti

2021

Polymers

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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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Section: Form Raft To Pet-raft Polymerizationmentioning

confidence: 99%

Section: Form Raft To Pet-raft Polymerizationmentioning

confidence: 99%

New Light in Polymer Science: Photoinduced Reversible Addition-Fragmentation Chain Transfer Polymerization (PET-RAFT) as Innovative Strategy for the Synthesis of Advanced Materials

Bellotti

Simonutti

2021

Polymers

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“…Titanium dioxide (TiO 2 ) has also been demonstrated to be a suitable photoredox catalyst to conduct PET-RAFT polymerization of MMA. However, the high energy of UV light would also decompose dithioester after irradiation time for 500 min, leading to the uncontrollable polymerization process [ 68 ]. Thus, visible light induced PET-RAFT polymerization systems have attracted more and more attention for researchers [ 57 , 69 ].…”

Section: Novel Raft Techniquesmentioning

confidence: 99%

Recent Advances in RAFT Polymerization: Novel Initiation Mechanisms and Optoelectronic Applications

et al. 2018

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Reversible addition-fragmentation chain transfer (RAFT) is considered to be one of most famous reversible deactivation radical polymerization protocols. Benefiting from its living or controlled polymerization process, complex polymeric architectures with controlled molecular weight, low dispersity, as well as various functionality have been constructed, which could be applied in wide fields, including materials, biology, and electrology. Under the continuous research improvement, main achievements have focused on the development of new RAFT techniques, containing fancy initiation methods (e.g., photo, metal, enzyme, redox and acid), sulfur-free RAFT system and their applications in many fields. This review summarizes the current advances in major bright spot of novel RAFT techniques as well as their potential applications in the optoelectronic field, especially in the past a few years.

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“…Excited photoredox catalysts could also reduce the thiocarbonylthio compounds to achieve photo‐RAFT polymerization without external initiator, which is also known as electron transfer reversible addition–fragmentation chain transfer polymerization (PET‐RAFT) . The photoredox catalysts used in PET‐RAFT included fac ‐[Ir(ppy) 3 ], Ru(bpy) 3 Cl 2 , ZnTPP, and TiO 2 . For tailoring polymer structures, photo‐induced ATRP and RAFT with metal‐based photoredox catalysts are robust technologies and have advantages over conventional ATRP and RAFT in spatial control and are suitable for thermosensitive monomers.…”

Section: Introductionmentioning

confidence: 99%

Visible Light–Induced RAFT Polymerization of Methacrylate with 4‐(N,N‐diphenylamino)benzaldehyde as Organophotoredox Catalyst and the Effect of Temperature on the Polymerization

Zhang

Chen

et al. 2019

Macro Chemistry & Physics

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With UV–vis absorption in the range of 270–435 nm, 4‐(N,N‐diphenylamino)benzaldehyde (DPAB) takes efficient photoreduction quench with 4‐cynao‐4‐(phenylcarbonothioylthio)pentanoic acid (CTP). The polymerization rates of methyl methacrylate (MMA) are 0.019, 0.056, and 0.102 h−1 at 33, 40, and 50 °C, respectively, in the presence of DPAB and CTP under visible‐light irradiation. Dark reaction produces no PMMA at 50 °C for 120 h. The living feature is demonstrated by linearly increasing Mn with the monomer conversions and narrow polydispersity index (PDI), chain extension, and block polymerizations with benzyl methacrylate (BnMA) and poly(ethylene glycol) monomethyl ether methacrylate (PEGMA). With PMMA‐CTP (Mn = 6800, PDI = 1.17), chain extension gives PMMA with Mn = 15 900 and PDI = 1.15. With PMMA‐CTP (Mn = 6000, PDI = 1.21) as macro‐RAFT, PMMA‐b‐PBnMA of Mn = 12 600 (PDI = 1.44) and Mn = 18 500 (PDI = 1.31) are prepared. These results support that there is a positive synergistic effect between polymerization temperature and visible‐light irradiation on the photo‐RAFT without losing the living features.

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Photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization using titanium dioxide

Cited by 38 publications

References 21 publications

New Light in Polymer Science: Photoinduced Reversible Addition-Fragmentation Chain Transfer Polymerization (PET-RAFT) as Innovative Strategy for the Synthesis of Advanced Materials

New Light in Polymer Science: Photoinduced Reversible Addition-Fragmentation Chain Transfer Polymerization (PET-RAFT) as Innovative Strategy for the Synthesis of Advanced Materials

Recent Advances in RAFT Polymerization: Novel Initiation Mechanisms and Optoelectronic Applications

Visible Light–Induced RAFT Polymerization of Methacrylate with 4‐(N,N‐diphenylamino)benzaldehyde as Organophotoredox Catalyst and the Effect of Temperature on the Polymerization

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