Rapid synthesis and MALDI-ToF characterization of polyethylene oxide multiarm star polymers

Maria Doycheva; Elena Berger-Nicoletti; Frederik Wurm; Holger Frey

doi:10.1002/macp.200900377

Rapid synthesis and MALDI-ToF characterization of polyethylene oxide multiarm star polymers

Maria Doycheva, Elena Berger-Nicoletti, Frederik Wurm, Holger Frey^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

11 Citations (Scopus)

Abstract

Multiarm PEO star polymers with a purely aliphatic polyether structure have been synthesized using hyperbranched polyglycerol (PG) with different molecular weights as a multifunctional initiator. Different degrees of deprotonation of the initiator were studied with respect to molecular weight control. The results show that the degree of deprotonation is a crucial parameter for the synthesis of well-defined polymers with controlled molecular weights. Partial deprotonation of the PG hydroxyl groups (5-8%) was proven to represent an optimum for the synthesis of star polymers with molecular masses close to the theoretical values. Molecular weights of the stars ranged between 9 000 and 30 000 g • moi^-1. MALDI-ToF spectra confirmed that the PEO arms in the star polymers possess homogeneous lengths. Biocompatible Multiarm Starpolymers. Chemical equation presented.

Original language	English
Pages (from-to)	35-44
Number of pages	10
Journal	Macromolecular chemistry and physics
Volume	211
Issue number	1
DOIs	https://doi.org/10.1002/macp.200900377
Publication status	Published - 5 Jan 2010
Externally published	Yes

Keywords

Dendrimers
Hyperbranched
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS)
Poly(ethylene oxide)
Star polymers

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title = "Rapid synthesis and MALDI-ToF characterization of polyethylene oxide multiarm star polymers",

abstract = "Multiarm PEO star polymers with a purely aliphatic polyether structure have been synthesized using hyperbranched polyglycerol (PG) with different molecular weights as a multifunctional initiator. Different degrees of deprotonation of the initiator were studied with respect to molecular weight control. The results show that the degree of deprotonation is a crucial parameter for the synthesis of well-defined polymers with controlled molecular weights. Partial deprotonation of the PG hydroxyl groups (5-8%) was proven to represent an optimum for the synthesis of star polymers with molecular masses close to the theoretical values. Molecular weights of the stars ranged between 9 000 and 30 000 g • moi-1. MALDI-ToF spectra confirmed that the PEO arms in the star polymers possess homogeneous lengths. Biocompatible Multiarm Starpolymers. Chemical equation presented.",

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AU - Doycheva, Maria

AU - Berger-Nicoletti, Elena

AU - Wurm, Frederik

AU - Frey, Holger

PY - 2010/1/5

Y1 - 2010/1/5

N2 - Multiarm PEO star polymers with a purely aliphatic polyether structure have been synthesized using hyperbranched polyglycerol (PG) with different molecular weights as a multifunctional initiator. Different degrees of deprotonation of the initiator were studied with respect to molecular weight control. The results show that the degree of deprotonation is a crucial parameter for the synthesis of well-defined polymers with controlled molecular weights. Partial deprotonation of the PG hydroxyl groups (5-8%) was proven to represent an optimum for the synthesis of star polymers with molecular masses close to the theoretical values. Molecular weights of the stars ranged between 9 000 and 30 000 g • moi-1. MALDI-ToF spectra confirmed that the PEO arms in the star polymers possess homogeneous lengths. Biocompatible Multiarm Starpolymers. Chemical equation presented.

AB - Multiarm PEO star polymers with a purely aliphatic polyether structure have been synthesized using hyperbranched polyglycerol (PG) with different molecular weights as a multifunctional initiator. Different degrees of deprotonation of the initiator were studied with respect to molecular weight control. The results show that the degree of deprotonation is a crucial parameter for the synthesis of well-defined polymers with controlled molecular weights. Partial deprotonation of the PG hydroxyl groups (5-8%) was proven to represent an optimum for the synthesis of star polymers with molecular masses close to the theoretical values. Molecular weights of the stars ranged between 9 000 and 30 000 g • moi-1. MALDI-ToF spectra confirmed that the PEO arms in the star polymers possess homogeneous lengths. Biocompatible Multiarm Starpolymers. Chemical equation presented.

KW - Dendrimers

KW - Hyperbranched

KW - Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS)

KW - Poly(ethylene oxide)

KW - Star polymers

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Rapid synthesis and MALDI-ToF characterization of polyethylene oxide multiarm star polymers

Abstract

Keywords

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