Studies of atom transfer radical polymerization (ATRP) of acrylates by MALDI TOF mass spectrometry

Bednarek, Melania; Biedroń, Tadeusz; Kubisa, Przemysław

doi:10.1002/(sici)1521-3935(20000101)201:1<58::aid-macp58>3.0.co;2-g

Cited by 105 publications

(133 citation statements)

References 13 publications

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“…Figure 5. The dependence of the fraction of macromolecules terminated with C1Br groups as determined from MALDI TOF MS spectra in polymers of butyl acrylate on monomer conversion: 9: polymerization in bulk [15] and F: polymerization in ionic liquid (conditions as in Table 3). …”

Section: Polymerization Under Heterogeneous Conditionsmentioning

confidence: 99%

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Atom-Transfer Radical Polymerization of Acrylates in an Ionic Liquid

Biedroń¹,

Kubisa²

2001

Macromol. Rapid Commun.

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154

110

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The atom‐transfer radical polymerization (ATRP) of acrylates in 1‐butyl‐3‐methylimidazolium hexafluorophosphate was investigated. The solubility of the acrylates in the ionic liquid depends on the substituent. The homogeneous polymerization of methyl acrylate gives polymers with M̄n close to the calculated value and relatively narrow polydispersity. In heterogeneous polymerizations of higher acrylates, with the catalyst present in the ionic liquid phase, deviations from ideal behavior are observed although the polymerization of butyl acrylate approaches the conditions of a controlled polymerization.

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Section: Polymerization Under Heterogeneous Conditionsmentioning

confidence: 99%

“…[15,16] The analysis of the isotope distribution of signals of the minor series (m/z = 1 404, 1 532) indicates the presence of two species differing by two molar mass units and, thus, giving partly overlapping signals. Neither of these species contains bromine.…”

Section: Polymerization Under Heterogeneous Conditionsmentioning

confidence: 99%

Atom-Transfer Radical Polymerization of Acrylates in an Ionic Liquid

Biedroń¹,

Kubisa²

2001

Macromol. Rapid Commun.

Self Cite

154

110

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“…The amount of transfer reaction in the presence of PMDETA remained important. Müller and coworkers [17] and Kubisa and coworkers [18] showed that the growing chains were slowly deactivated by transfer to the PMDETA ligand.…”

Section: Synthesis Of Fabu Telechelic Oligomersmentioning

confidence: 99%

“…This simulation corresponds perfectly to the structure of the signals for series A. Like it has been done previously for butyl acrylate, [18] the bromine atom on the polymer chain may be detected according to the signals structure for the observed series. Actually, looking at the MALDI TOF spectrum (Figure 4), it seems that brominated chains are characterized.…”

Section: Analysis Of the Sample Before The Coupling Reactionmentioning

confidence: 99%

Synthesis of Telechelic Oligomers via Atom Transfer Radical Polymerization, 3

Otazaghine

Boutevin

2004

Macro Chemistry & Physics

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Summary: ATRP of butyl α‐fluoroacrylate (FABu) was carried out at 90 °C using methyl 2‐bromoisobutyrate (2‐MBiB) as initiator and the homogeneous catalyst CuBr/1,1,4,7,10,10‐hexamethyltriethylenetetramine (HMTETA). Telechelic oligomers were obtained by coupling the bromo terminated polymers in the presence of Cu(0) and 2,2′‐bipyridyl ligand. The 1H and 19F NMR, SEC and MALDI TOF analyses show that the poly(FABu) chains recombination was the main reaction (80% yield). About 20% of disproportionation reaction also occurs in the process, whereas transfer reactions can be neglected.Compounds produced by recombination, disproportionation and transfer during the coupling reaction of poly(FABu) oligomers.magnified imageCompounds produced by recombination, disproportionation and transfer during the coupling reaction of poly(FABu) oligomers.

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“…The EGF data are reliably measured by consecutively performing dialysis to remove residual OEXEP and elemental analysis to determine the sulphur and nitrogen content for the polymer samples. It should be noted that, in general, EGF determination is challenging, 62 especially for high molar mass polymers for which the accuracy of techniques such as proton nuclear magnetic resonance ( 1 H-NMR), [63][64][65][66][67][68] ultraviolet (UV) spectroscopy, 69,70 matrixassisted laser desorption/ionization time-of-flight, 61,62,71,72 and even elemental analysis 73 is limited. The modelling tools are used to understand better the MADIX mechanism and to visualize -for the first time -the monomer sequences along individual chains during chain extension with (i) styrene or (ii) n-butyl acrylate (nBuA).…”

Section: Introductionmentioning

confidence: 99%