Biocompatible polymers via aqueous electrochemically mediated atom transfer radical polymerization

Michieletto, Alessandro; Lorandi, Francesca; Bon, Francesco De; Isse, Abdirisak Ahmed; Gennaro, Armando

doi:10.1002/pol.20190323

Cited by 6 publications

(6 citation statements)

References 57 publications

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“…However, at more reducing potentials (Eapp = -0.25 --0.35 V, Table 1, entries 3 -5) the dispersities of the final polymers gradually increased (Ɖm = 1.33 -1.72). These observations are in agreement with the previous literature 28 at Eapp = -0.25 V (Fig. 1B).…”

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confidence: 94%

Plug-and-play aqueous electrochemical atom transfer radical polymerization

et al. 2021

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supporting

confidence: 94%

Plug-and-play aqueous electrochemical atom transfer radical polymerization

et al. 2021

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“…e ATRP catalyzed by [Cu II TPMA] 2+ was very slow, yielding a polymer with broad dispersity and converting only 19 % of monomer in four hours. This is in contrast with the general behavior of [Cu II TPMA] 2+ as one of the best catalysts for aqueous e ATRP . This limited catalytic efficiency was already reported in e ATRP of acrylamide .…”

Section: Resultscontrasting

confidence: 62%

Electrochemically Mediated Aqueous Atom Transfer Radical Polymerization of N,N‐Dimethylacrylamide

et al. 2020

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Electrochemically mediated atom transfer radical polymerization (ATRP) of N,N‐dimethylacrylamide (DMAA) catalyzed by copper complexes with polydentate amine ligands was studied systematically in water, investigating several reaction parameters such as applied potential, catalyst concentration, ligand structure, monomer and initiator concentrations. Electropolymerizations were successfully performed under both potentiostatic and galvanostatic conditions; in both eATRP modes, reactions were fast (monomer conversion >90 % in less than 1 h) and well‐controlled, providing polymers with narrow molecular weight distributions. Despite the low dispersity, chain extension attempts of the obtained polymer were not successful because of partial loss of C−Br chain‐end functionality, due to an intramolecular nucleophilic attack. This is an intrinsic drawback of ATRP of acrylamides and although the electrochemical approach allowed preparation of well‐defined polymers in a very short time (down to ca. 15 min), loss of chain‐end functionality was unavoidable.

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“…This indicated that the conditions currently employed are not suitable for obtaining a similar range of dispersities (Đ = 1.1 -1.6). For methacrylates, electrochemical ATRP may offer a solution to obtain lower Đ 43,[47][48][49] but this was deemed to be beyond the scope of the current work. To further probe the potential of our methodology, we were also interested in the limits of livingness for high-Đ systems as high Đ has traditionally been associated with chain termination.…”

Section: Resultsmentioning

confidence: 99%