Photoinduced sequence-control via one pot living radical polymerization of acrylates

Anastasaki, Athina; Nikolaou, Vasiliki; Pappas, George S.; Zhang, Qiang; Wan, Chaoying; Wilson, Paul; Davis, Thomas P.; Whittaker, Michael R.; Haddleton, David M.

doi:10.1039/c4sc01374c

Cited by 155 publications

(144 citation statements)

References 65 publications

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“…The curve can be divided into three regions; the semicircle in the low frequency region can be attributed to the diffusion process of I -/I 3-in the electrolyte (Warburg diffusion), the middle region can be ascribed to the electron transport at the PEDOT: PSS/polymer/electrolyte interface, whereas the high frequency region is due to the charge transfer at the Platinum/electrolyte interface. 36 From the Nyquist plots, it is apparent that the diameter of the medium frequency semicircle decreased in the order of P3 > P4 > P2 > P1, implying that the rate of recombination is in the order P1 > P2 > P4 > P3. The electron lifetimes of P1, P2, P3, and P4 are found to be 9.1, 9.0, 10.4, and 8.4 ms, respectively.…”

Section: Electrochemical Impedance Spectroscopy (Eis) Analysismentioning

confidence: 97%

Synthesis of Polyacrylate‐Based Chalcone Containing Different Donor Moieties and Studies on their Optical, Electrochemical, and Thermal Properties

Selvam

Subramanian

2016

Adv Polym Technol

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Four novel metal-free acrylate polymers were synthesized via free radical polymerization using AIBN, in which a phenyl-chalcone-phenyl unit was connected with donor moieties such as fluorene, indole, anthracene, and benzophenone along with an acrylic acid group. The molecular weights of the polymers (P1-P4) were determined by gel permeation chromatography and their molecular structures were confirmed by FT-IR, 1 H-NMR and 13 C-NMR spectroscopy. The polymers were studied for their thermal properties by using DSC and thermo gravimetric analysis, which showed glass transition temperature (T g ,°C) in the range of 140-165°C. The relationship between molecular structure and optoelectronic properties of the synthesized polymers were investigated by UV-Visible, cyclic voltammetry, and electrochemical impedance spectroscopy.

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Section: Electrochemical Impedance Spectroscopy (Eis) Analysismentioning

confidence: 97%

Synthesis of Polyacrylate‐Based Chalcone Containing Different Donor Moieties and Studies on their Optical, Electrochemical, and Thermal Properties

Selvam

Subramanian

2016

Adv Polym Technol

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“…[46][47][48][49] Overall, with the merit of light in the temporal and spatial control of polymerization, photo ATRP has attracted increasing interest and has been used to synthesize the multiple-block copolymers and surface micropatterns. [50][51][52] However, no detailed kinetic study for this mechanism based on a well-built model has been conducted.…”

Section: Introductionmentioning

confidence: 99%

An old kinetic method for a new polymerization mechanism: Toward photochemically mediated ATRP

Zhou

Luo

2015

AIChE Journal

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in Wiley Online Library (wileyonlinelibrary.com) With the idea of "an old method for a new mechanism," a detailed kinetic insight into photochemically mediated atomtransfer radical polymerization (photo ATRP) was presented through a validated comprehensive model. The simulation mimics the experimental results of the model system using optimized photochemically mediated radical generation rate coefficients. The activator and radical (re)generated from the photo mediated reactions endow the photo ATRP with unique features, such as rapid ATRP equilibrium and quick consumption of initiator with a small amount of residual. The effect of the reaction parameters on ATRP behaviors was also investigated. Results showed that the acceleration of polymerization rate follows the square root law in the following three cases: the overall photochemically mediated radical generation rate coefficients (k r ), the free ligand concentration, and the initiator concentration. However, the independence of the apparent propagation rate coefficient (k app p ) on the square root of catalyst concentration might be attributed to the result of the synergy between the activators regenerated by electron-transfer ATRP and the initiators for continuous activator regeneration ATRP mechanism. The photo ATRP is able to design and prepare various polymers by carefully tuning the conditions using the model-based optimization approach.

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“…It is necessary to add the monomer in an order of descending reactivity. This approach has been proved to be very successful in living anionic and controlled radical polymerizations [89,90]. For example, high-order multiblock polyacrylates were prepared using Cu(0)-mediated radical polymerizations (SET-LRP) ( Figure 27) [91].…”

Section: Multi-block Copolymers With Specific Block Sequencementioning

confidence: 99%

Recent developments in the synthesis of sequence controlled polymers

2015

Sci. China Chem.

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Photoinduced sequence-control via one pot living radical polymerization of acrylates

Abstract: A versatile and inexpensive photochemical platform for the preparation of high-order multiblock functional materials.

Cited by 155 publications

References 65 publications

Synthesis of Polyacrylate‐Based Chalcone Containing Different Donor Moieties and Studies on their Optical, Electrochemical, and Thermal Properties

Synthesis of Polyacrylate‐Based Chalcone Containing Different Donor Moieties and Studies on their Optical, Electrochemical, and Thermal Properties

An old kinetic method for a new polymerization mechanism: Toward photochemically mediated ATRP

Recent developments in the synthesis of sequence controlled polymers

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