Toward an easy access to dendrimer-like poly(ethylene oxide)s

Xiao Shuang Feng; Daniel Taton; Elliot L. Chaikof; Yves Gnanou

doi:10.1021/ja0509432

Toward an easy access to dendrimer-like poly(ethylene oxide)s

Xiao Shuang Feng, Daniel Taton^*, Elliot L. Chaikof, Yves Gnanou

^*Corresponding author for this work

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

126 Scopus citations

Abstract

Dendrimer-like poly(ethylene oxide)s (PEOs) were synthesized by an iterative divergent approach combining anionic polymerization of ethylene oxide from multi-hydroxylated precursors and branching reactions of PEO chain ends. Partial deprotonation of the hydroxyls (<30%) and use of dimethyl sulfoxide as solvent proved crucial for a "controlled/living" polymerization of ethylene oxide at room temperature. These sequences of reactions allowed us to prepare a dendrimer-like PEO up to the eighth generation with a molar mass of 900 000 g mol^-1 and 384 external hydroxyl functions. All samples from generation 1 to 8 were characterized by ¹H NMR spectroscopy, light scattering, and viscometry. The evolution of the intrinsic viscosity versus the generation number of these dendrimer-like PEO is similar to that of regular dendrimers.

Original language	English (US)
Pages (from-to)	10956-10966
Number of pages	11
Journal	Journal of the American Chemical Society
Volume	127
Issue number	31
DOIs	https://doi.org/10.1021/ja0509432
State	Published - Aug 10 2005
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja0509432

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abstract = "Dendrimer-like poly(ethylene oxide)s (PEOs) were synthesized by an iterative divergent approach combining anionic polymerization of ethylene oxide from multi-hydroxylated precursors and branching reactions of PEO chain ends. Partial deprotonation of the hydroxyls (<30%) and use of dimethyl sulfoxide as solvent proved crucial for a {"}controlled/living{"} polymerization of ethylene oxide at room temperature. These sequences of reactions allowed us to prepare a dendrimer-like PEO up to the eighth generation with a molar mass of 900 000 g mol-1 and 384 external hydroxyl functions. All samples from generation 1 to 8 were characterized by 1H NMR spectroscopy, light scattering, and viscometry. The evolution of the intrinsic viscosity versus the generation number of these dendrimer-like PEO is similar to that of regular dendrimers.",

author = "Feng, {Xiao Shuang} and Daniel Taton and Chaikof, {Elliot L.} and Yves Gnanou",

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T1 - Toward an easy access to dendrimer-like poly(ethylene oxide)s

AU - Feng, Xiao Shuang

AU - Taton, Daniel

AU - Chaikof, Elliot L.

AU - Gnanou, Yves

PY - 2005/8/10

Y1 - 2005/8/10

N2 - Dendrimer-like poly(ethylene oxide)s (PEOs) were synthesized by an iterative divergent approach combining anionic polymerization of ethylene oxide from multi-hydroxylated precursors and branching reactions of PEO chain ends. Partial deprotonation of the hydroxyls (<30%) and use of dimethyl sulfoxide as solvent proved crucial for a "controlled/living" polymerization of ethylene oxide at room temperature. These sequences of reactions allowed us to prepare a dendrimer-like PEO up to the eighth generation with a molar mass of 900 000 g mol-1 and 384 external hydroxyl functions. All samples from generation 1 to 8 were characterized by 1H NMR spectroscopy, light scattering, and viscometry. The evolution of the intrinsic viscosity versus the generation number of these dendrimer-like PEO is similar to that of regular dendrimers.

AB - Dendrimer-like poly(ethylene oxide)s (PEOs) were synthesized by an iterative divergent approach combining anionic polymerization of ethylene oxide from multi-hydroxylated precursors and branching reactions of PEO chain ends. Partial deprotonation of the hydroxyls (<30%) and use of dimethyl sulfoxide as solvent proved crucial for a "controlled/living" polymerization of ethylene oxide at room temperature. These sequences of reactions allowed us to prepare a dendrimer-like PEO up to the eighth generation with a molar mass of 900 000 g mol-1 and 384 external hydroxyl functions. All samples from generation 1 to 8 were characterized by 1H NMR spectroscopy, light scattering, and viscometry. The evolution of the intrinsic viscosity versus the generation number of these dendrimer-like PEO is similar to that of regular dendrimers.

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Toward an easy access to dendrimer-like poly(ethylene oxide)s

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