Photoinduced ICAR ATRP of Methyl Methacrylate with AIBN as Photoinitiator

Zhao, Qingling; Liu, Enhui; Wang, Guoxiang; Hou, Zhaohui; Zhan, Xuehui; Liu, Lichao; H, Wu

doi:10.1007/s10965-014-0444-1

Cited by 13 publications

(6 citation statements)

References 15 publications

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“…PhotoATRP systems based on iron catalysts were reported in 2014 [95,96] and 2015. [97][98][99][100] Iron could be considered as a preferred transition-metal for ATRP due to its abundance, lower toxicity, and lower cost than copper.…”

Section: Fe-mediated Photoatrpmentioning

confidence: 99%

“…PhICAR ATRP of MMA was conducted using CCl 4 as ATRP initiator, tetramethylethylenediamine (TMEDA) as ligand and FeCl 3 and AIBN as photoinitiators. [95] Benzoyl peroxide (BPO) was also successfully used as a conventional radical initiator under irradiation conditions. Typical features of controlled radical polymerization were observed in this system, such as linear semilogarithmic plots, linear relationships of M n with conversion and low dispersity.…”

Section: Fe-mediated Photoatrpmentioning

confidence: 99%

“…Additionally, it was observed that FeCl 3 /bpy complex was reduced by ethanol under irradiation at room temperature. [95] A series of Fe-mediated photoATRPs were conducted by using this photoreduction mechanism to provide well-defined PMMA. An induction period was usually observed at the early stage of the polymerization period, and polymerization completed stopped in the absence of irradiation.…”

Section: Fe-mediated Photoatrpmentioning

confidence: 99%

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Photomediated controlled radical polymerization

Pan

Taşdelen

Laun

et al. 2016

Progress in Polymer Science

607

421

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Photomediated controlled radical polymerization is a versatile method to prepare, under mild conditions, various well-defined polymers with complex architecture, such block and graft copolymers, sequence-controlled polymers, or hybrid materials via surface-initiated polymerization. It also provides opportunity to manipulate the reaction through spatiotemporal control. This review presents a comprehensive account of the fundamentals and applications of various Photomediated CRP techniques, including atom transfer radical polymerization (ATRP), reversible addition-fragmentation chain transfer (RAFT), nitroxide mediated polymerization (NMP) and other procedures. In addition, mechanistic aspects of other photomediated methods are discussed.

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Section: Fe-mediated Photoatrpmentioning

confidence: 99%

Section: Fe-mediated Photoatrpmentioning

confidence: 99%

Section: Fe-mediated Photoatrpmentioning

confidence: 99%

See 1 more Smart Citation

Photomediated controlled radical polymerization

Pan

Taşdelen

Laun

et al. 2016

Progress in Polymer Science

607

421

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“…Early studies regarding photoATRP were conducted in the presence of photoinitiators or photosensitizers . The attempts include the systems with the addition of type I (e.g., AIBN, TPO, BTPO, and Irgacure-2959) − and type II (e.g., benzophenone/benzyl alcohol) , initiators, dye/co-initiators (e.g., eosin Y/amine), as well as inorganic semiconducting (e.g., TiO 2 ) initiators. , Mechanistically, the initiating radicals generated from photoinititors or co-initiators are able to reduce the deactivator (e.g., Cu II species) and initiate the monomer, thus to perform reverse ATRP or SR&NI ATRP depending on the absence of alkyl halide or not, as shown in Scheme . From the viewpoint of kinetics, a better control was observed in SR&NI ATRP compared to the reverse one. , Besides, type I initiator involved cases were better than type II initiator involved cases in terms of quantum yield and reaction rate, , and the degree of control over the polymerization with the type I initiator was much better than that of the dye-sensitized system .…”

Section: Light-regulated Systemsmentioning

confidence: 99%

Role of External Field in Polymerization: Mechanism and Kinetics

et al. 2020

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The past decades have witnessed an increasing interest in developing advanced polymerization techniques subjected to external fields. Various physical modulations, such as temperature, light, electricity, magnetic field, ultrasound, and microwave irradiation, are noninvasive means, having superb but distinct abilities to regulate polymerizations in terms of process intensification and spatial and temporal controls. Gas as an emerging regulator plays a distinctive role in controlling polymerization and resembles a physical regulator in some cases. This review provides a systematic overview of seven types of external-field-regulated polymerizations, ranging from chain-growth to step-growth polymerization. A detailed account of the relevant mechanism and kinetics is provided to better understand the role of each external field in polymerization. In addition, given the crucial role of modeling and simulation in mechanisms and kinetics investigation, an overview of model construction and typical numerical methods used in this field as well as highlights of the interaction between experiment and simulation toward kinetics in the existing systems are given. At the end, limitations and future perspectives for this field are critically discussed. This state-of-the-art research progress not only provides the fundamental principles underlying external-field-regulated polymerizations but also stimulates new development of advanced polymerization methods.

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“…The reactants were first dissolved in a 3 mL sample of the H 2 O/ACN (3:1, v / v ) solution in glass vials and then ultrasonicated for 30 min. ACN was used for two reasons, i.e., as a porogenic agent and to enhance the solubility of water-insoluble AIBN, a common free-radical generator initiating UV-FRP . In all cases, AIBN was added to the solution as the last component.…”

Section: Methodsmentioning

confidence: 99%

In-Capillary Photodeposition of Glyphosate-Containing Polyacrylamide Nanometer-Thick Films

Mazuryk

Klepacka

Piechowska

et al. 2022

ACS Appl. Polym. Mater.

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The present research reports on in-water, site-specific photodeposition of glyphosate (GLP)-containing polyacrylamide (PAA-GLP) nanometer-thick films (nanofilms) on an inner surface of fused silica (fused quartz) microcapillaries presilanized with trimethoxy(octen-7yl)silane (TMOS). TMOS was chosen because of the vinyl group presence in its structure, enabling its participation in the (UV light)activated free-radical polymerization (UV-FRP) after its immobilization on a fused silica surface. The photodeposition was conducted in an aqueous (H 2 O/ACN; 3:1, v/v) solution, using UV-FRP (λ = 365 nm) of the acrylamide (AA) functional monomer, the N,N′-methylenebis(acrylamide) (BAA) cross-linking monomer, GLP, and the azobisisobutyronitrile (AIBN) UV-FRP initiator. Acetonitrile (ACN) was used as the porogen and the solvent to dissolve monomers and GLP. Because of the micrometric diameters of microcapillaries, the silanization and photodeposition procedures were first optimized on fused silica slides. The introduction of TMOS, as well as the formation of PAA and PAA-GLP nanofilms, was determined using atomic force microscopy (AFM), scanning electron microscopy with energy-dispersive X-ray (SEM−EDX) spectroscopy, and confocal micro-Raman spectroscopy. Particularly, AFM and SEM−EDX measurements determined nanofilms' thickness and GLP content, respectively, whereas in-depth confocal (micro-Raman spectroscopy)-assisted imaging of PAA-and PAA-GLP-coated microcapillary inner surfaces confirmed the successful photodeposition. Moreover, we examined the GLP impact on polymer gelation by monitoring hydration in a hydrogel and a dried powder PAA-GLP. Our study demonstrated the usefulness of the in-capillary micro-Raman spectroscopy imaging and in-depth profiling of GLP-encapsulated PAA nanofilms. In the future, our simple and inexpensive procedure will enable the fabrication of polymer-based microfluidic chemosensors or adsorptive-separating devices for GLP detection, determination, and degradation.

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Photoinduced ICAR ATRP of Methyl Methacrylate with AIBN as Photoinitiator

Cited by 13 publications

References 15 publications

Photomediated controlled radical polymerization

Photomediated controlled radical polymerization

Role of External Field in Polymerization: Mechanism and Kinetics

In-Capillary Photodeposition of Glyphosate-Containing Polyacrylamide Nanometer-Thick Films

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