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A conformation study of polyelectrolyte-dendritic surfactant complexes in dilute solutions

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Abstract

Three dendronized polymers from generation one to generation three have been prepared by complexing negatively charged Fréchet-type dendrons with a polyanion, poly(diallydimethylammonium chloride) (PDADMAC). The grafting degree has been confirmed mainly by elemental analysis. In dilute solutions of tetrahydrofuran, static light scattering studies indicate that the first generation complex has a coil-like conformation, even more flexible than PDADMAC. The second and third generation complexes exhibit polyelectrolyte behavior. Dynamic light scattering experiments indicate that all the three complexes have almost the same hydrodynamic radius, indicating that they might own similar coil conformation. Atomic force microscopy shows the existence of disordered globules formed by one or a couple of complex coils. All these observations can be explained by the flowerlike coil conformation, which is formed by the intra-molecular association. This is totally different from the stretched chain conformation formed by covalently connected dendronized polymers. This result also explains why some ordered supramolecular structures, found in condensed state of the similar complexes, are not as perfect as those of conventional dendronized polymers.

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Authors and Affiliations

  1. The Key Laboratory of Functional Polymer Materials and Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China

    Xin-jun Zhang, Fei Yuan, Yong-liang Wang, Zi-jian Zhang & Wei Wang  (王维)

Authors
  1. Xin-jun Zhang
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  2. Fei Yuan
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  3. Yong-liang Wang
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  4. Zi-jian Zhang
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  5. Wei Wang  (王维)
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Corresponding author

Correspondence to Wei Wang  (王维).

Additional information

This work was financially supported by the National Natural Science Foundation of China (No. 20734001).

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Zhang, Xj., Yuan, F., Wang, Yl. et al. A conformation study of polyelectrolyte-dendritic surfactant complexes in dilute solutions. Chin J Polym Sci 28, 395–404 (2010). https://doi.org/10.1007/s10118-010-9037-6

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  • DOI: https://doi.org/10.1007/s10118-010-9037-6

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