Morphology transitions of supramolecular hyperbranched polymers induced by double supramolecular driving forces

Yang Bai; Xiao Dong Fan; Wei Tian; Ting Ting Liu; Hao Yao; Zhen Yang; Hai Tao Zhang; Wan Bin Zhang

doi:10.1039/c4py01092b

Morphology transitions of supramolecular hyperbranched polymers induced by double supramolecular driving forces

Yang Bai, Xiao Dong Fan, Wei Tian, Ting Ting Liu, Hao Yao, Zhen Yang, Hai Tao Zhang, Wan Bin Zhang

School of Chemistry and Chemical Engineering

Northwestern Polytechnical University Xian

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

23 Scopus citations

Abstract

Tuning the morphology of supramolecular hyperbranched polymers (SHPs) in solution has theoretical and practical significance in SHP applications. This study successfully achieved SHP morphology transitions from branched supramolecular structures to spherical nanosized micelles in mixed solvents. Transmission electron microscopy, dynamic light scattering, 2D ¹H NMR ROESY, and fluorescence emission spectroscopy confirmed these transitions. An AB₂-type amphiphilic β-cyclodextrin (β-CD) monomer (Ada-CD₂) exhibiting double supramolecular interactions was initially synthesized. SHPs based on Ada-CD₂ were then formed in DMF-H₂O mixed solvents through the host-guest inclusion interaction between β-CD and Ada. The formed SHPs disassembled with the addition of adamantane carboxylic sodium salt, which was a competitive guest. The SHPs reassembled into core-shell structured micelles based on the hydrophilic-hydrophobic interaction of the amphiphilic Ada-CD₂ monomer.

Original language	English
Pages (from-to)	732-737
Number of pages	6
Journal	Polymer Chemistry
Volume	6
Issue number	5
DOIs	https://doi.org/10.1039/c4py01092b
State	Published - 7 Feb 2015

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title = "Morphology transitions of supramolecular hyperbranched polymers induced by double supramolecular driving forces",

abstract = "Tuning the morphology of supramolecular hyperbranched polymers (SHPs) in solution has theoretical and practical significance in SHP applications. This study successfully achieved SHP morphology transitions from branched supramolecular structures to spherical nanosized micelles in mixed solvents. Transmission electron microscopy, dynamic light scattering, 2D 1H NMR ROESY, and fluorescence emission spectroscopy confirmed these transitions. An AB2-type amphiphilic β-cyclodextrin (β-CD) monomer (Ada-CD2) exhibiting double supramolecular interactions was initially synthesized. SHPs based on Ada-CD2 were then formed in DMF-H2O mixed solvents through the host-guest inclusion interaction between β-CD and Ada. The formed SHPs disassembled with the addition of adamantane carboxylic sodium salt, which was a competitive guest. The SHPs reassembled into core-shell structured micelles based on the hydrophilic-hydrophobic interaction of the amphiphilic Ada-CD2 monomer.",

author = "Yang Bai and Fan, {Xiao Dong} and Wei Tian and Liu, {Ting Ting} and Hao Yao and Zhen Yang and Zhang, {Hai Tao} and Zhang, {Wan Bin}",

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T1 - Morphology transitions of supramolecular hyperbranched polymers induced by double supramolecular driving forces

AU - Bai, Yang

AU - Fan, Xiao Dong

AU - Tian, Wei

AU - Liu, Ting Ting

AU - Yao, Hao

AU - Yang, Zhen

AU - Zhang, Hai Tao

AU - Zhang, Wan Bin

PY - 2015/2/7

Y1 - 2015/2/7

N2 - Tuning the morphology of supramolecular hyperbranched polymers (SHPs) in solution has theoretical and practical significance in SHP applications. This study successfully achieved SHP morphology transitions from branched supramolecular structures to spherical nanosized micelles in mixed solvents. Transmission electron microscopy, dynamic light scattering, 2D 1H NMR ROESY, and fluorescence emission spectroscopy confirmed these transitions. An AB2-type amphiphilic β-cyclodextrin (β-CD) monomer (Ada-CD2) exhibiting double supramolecular interactions was initially synthesized. SHPs based on Ada-CD2 were then formed in DMF-H2O mixed solvents through the host-guest inclusion interaction between β-CD and Ada. The formed SHPs disassembled with the addition of adamantane carboxylic sodium salt, which was a competitive guest. The SHPs reassembled into core-shell structured micelles based on the hydrophilic-hydrophobic interaction of the amphiphilic Ada-CD2 monomer.

AB - Tuning the morphology of supramolecular hyperbranched polymers (SHPs) in solution has theoretical and practical significance in SHP applications. This study successfully achieved SHP morphology transitions from branched supramolecular structures to spherical nanosized micelles in mixed solvents. Transmission electron microscopy, dynamic light scattering, 2D 1H NMR ROESY, and fluorescence emission spectroscopy confirmed these transitions. An AB2-type amphiphilic β-cyclodextrin (β-CD) monomer (Ada-CD2) exhibiting double supramolecular interactions was initially synthesized. SHPs based on Ada-CD2 were then formed in DMF-H2O mixed solvents through the host-guest inclusion interaction between β-CD and Ada. The formed SHPs disassembled with the addition of adamantane carboxylic sodium salt, which was a competitive guest. The SHPs reassembled into core-shell structured micelles based on the hydrophilic-hydrophobic interaction of the amphiphilic Ada-CD2 monomer.

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JO - Polymer Chemistry

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Morphology transitions of supramolecular hyperbranched polymers induced by double supramolecular driving forces

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