2017
DOI: 10.1039/c7py00173h
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“Clickable PEG” via anionic copolymerization of ethylene oxide and glycidyl propargyl ether

Abstract: First one-step synthesis of poly(ethylene glycol) bearing multiple alkyne-groups along the polyether backbone and subsequent generation of PEG-glycopolymers by CuAAC.

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Cited by 20 publications
(22 citation statements)
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“…Thus, this was the synthesis route established to obtain copolymers with increasing percentage of GPE. The poorer results in the other cases can be explained by the low reactivity of the GPE compared to the reactivity of the other two monomers: r EO = 14.8 and r GPE = 0.076 for the copolymerization of EO and GPE, and r EO = 3.1 and r PO = 0.3 for the copolymerization reaction of EO and PO . The low reactivity of the GPE results in a limitation of the growth of the copolymer chain when it is added at the same time as the PO, which is in agreement with previous research …”
Section: Resultssupporting
confidence: 90%
“…Thus, this was the synthesis route established to obtain copolymers with increasing percentage of GPE. The poorer results in the other cases can be explained by the low reactivity of the GPE compared to the reactivity of the other two monomers: r EO = 14.8 and r GPE = 0.076 for the copolymerization of EO and GPE, and r EO = 3.1 and r PO = 0.3 for the copolymerization reaction of EO and PO . The low reactivity of the GPE results in a limitation of the growth of the copolymer chain when it is added at the same time as the PO, which is in agreement with previous research …”
Section: Resultssupporting
confidence: 90%
“…Alternatively, post-polymerization modification offers an avenue to access multifunctional polymers while circumventing the incompatibility of desirable functional groups with polymerization conditions. , Many post-polymerization modification strategies are based on the increasing convergence of organic chemistry and polymer synthesis, spearheaded by the introduction of click chemistry by Sharpless and colleagues . For example, post-polymerization modification of many classes of polymers has been achieved through various chemical transformations, including azide–alkyne cycloaddition, , transesterification, thiol–ene addition, Diels–Alder reactions, Suzuki–Miyaura coupling, and sulfur fluoride exchange . For this strategy, the development of a suitable monomer that is compatible with a polymerization needs to be accompanied.…”
Section: Introductionmentioning
confidence: 99%
“…The hydrodynamic volume ( V h ) of the copolymers differs from that of the PEG standard with increasing content of the hydrophobic comonomer, which leads to a deviation from the targeted molecular weights. In all cases, monomodal molecular weight distributions were obtained with moderate dispersities ( Đ < 1.86), which are common for the MAROP of EO . Because of the lack of an integrable initiator (like in the AROP), no molecular weight can be determined via 1 H NMR spectroscopy.…”
Section: Resultsmentioning
confidence: 98%
“…In the monomer-activated anionic ring-opening polymerization (MAROP), a weak nucleophile is applied in combination with an organo aluminum compound acting as a catalyst as well as an activator for the epoxide monomers . Functional groups like nitriles or propargyl groups were incorporated into PEG using MAROP. , …”
Section: Introductionmentioning
confidence: 99%