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Colloid and Polymer Science

, Volume 291, Issue 4, pp 927–936 | Cite as

Synthesis and physical behavior of amphiphilic dendrimers with layered organization of hydrophilic and hydrophobic blocks

  • Ignaty LeshchinerEmail author
  • Natalia Boiko
  • Jayant Kumar
  • Robert M. Richardson
  • Aziz Muzafarov
  • Valery Shibaev
Original Contribution

Abstract

Amphiphilic carbosilane dendrimers with novel architectural layout have been synthesized. These dendrimers contain peripheral groups consisting of covalently bound promesogenic fragments and hydrophilic (oligoethyleneglycolic) linkages which are connected to a carbosilane core in two distinct ways: as spacer or as tail arrangement. Such molecules have a block structure where the hydrophilic and hydrophobic blocks are distributed within the dendrimer forming layers of different polarity. The hydrophilic layer is either enclosed between two hydrophobic parts of the molecule or is situated on the periphery. The synthetic strategy for achieving these structures is described. The interfacial properties of the dendrimers were studied and the influence of the dendritic structure’s organization on the Langmuir film formation process is assessed.

Keywords

Dendrimer Amphiphilic Langmuir Blodgett Thin films 

Notes

Acknowledgments

This research was supported by the Russian Foundation of Fundamental Researches, COST action D35-WG0013. We also appreciate the help of Dr. Elena Agina, Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, with BAM experiments. Authors thank Prof. Stephen Roser for helpful discussions, Dmitry Eliseev for initial contribution to the synthetic work and Dr. Anatoly Kaznacheev for his help with low temperature POM. Authors are especially grateful to Center for Advanced Materials, University of Massachusetts Lowell for providing research support.

Supplementary material

396_2012_2811_MOESM1_ESM.doc (1.9 mb)
ESM 1 Additional synthetic procedures, 1H, 13C 1D and 2D NMR spectra, GPC, POM, DSC and MALDI-TOF MS data. Brewster angle microscopy and Langmuir measurements. This material is available free of charge via the Internet. (DOC 1958 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Ignaty Leshchiner
    • 1
    Email author
  • Natalia Boiko
    • 1
  • Jayant Kumar
    • 2
  • Robert M. Richardson
    • 4
  • Aziz Muzafarov
    • 3
  • Valery Shibaev
    • 1
  1. 1.Chemistry DepartmentMoscow State UniversityMoscowRussia
  2. 2.Center for Advanced MaterialsUniversity of MassachusettsLowellUSA
  3. 3.Institute of Synthetic Polymeric Materials of the Russian Academy of SciencesMoscowRussia
  4. 4.H.H. Wills Physics LaboratoryUniversity of BristolBristolUK

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