Skip to main content
SpringerLink
Log in

Chiral nematic phase in hydrogen-bonded blends of a side-chain smectic polymer with low molar mass dopants

  • Original Contribution
  • Published:
Colloid and Polymer Science Aims and scope Submit manuscript

Abstract

The possibility of chiral nematic mesophase induction in blends of a smectic A side-chain liquid-crystalline copolymer with low molar mass dopants was studied. The chirality of the initial copolymer was determined by the cholesterol optical active groups; however, in the individual state it was not able to form any chiral liquid-crystalline phases. We have shown that the induction of the chiral nematic phase becomes possible in blends of such a copolymer with low molar mass dopants that are stabilized by hydrogen bonding. Phase behavior and optical properties of the blends were studied with X-ray scattering, differential scanning calorimetry and polarizing microscopy. Owing to hydrogen bonding the blends are stable over a wide range of contents and temperatures. The nature of the end group in the dopant molecules is shown to have an important influence on the chiral mesophase induction concentration and the clearing temperatures of the blends. Temperature and concentration dependences of the selective reflection maximum wavelength in the chiral nematic phase were also studied.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.

Similar content being viewed by others

Notes

  1. The effective concentration is the concentration related to the total mass of the polymer matrix and incorporated dopant

References

  1. McArdle C (ed) (1989) Side chain liquid crystal polymers. Blackie, London

  2. Shibaev VP, Bobrowsky AY, Boiko NI (2003) Prog Polym Sci 28:729–836

    Article  CAS  Google Scholar 

  3. Shibaev VP, Lam L (eds) (1994) Liquid crystalline and mesomorphic polymers. Springer, Berlin Heidelberg New York

  4. Demus D, Goodby J, Grey GW, Spiess HW, Vill V (eds) (1998) Handbook of liquid crystals, vols I–IV. Wiley-VCH, New York

  5. Finkelmann H, Koldehoff J, Ringsdorf H (1978) Angew Chem 90:92

    Google Scholar 

  6. Finkelman H, Rehage G (1984) Adv Polym Sci 60:99

    Google Scholar 

  7. Barmatov EB, Bobrovsky AY, Pebalk DA, Barmatova MV, Shibaev VP (1999) J Polym Sci A 37:3215

    Article  CAS  Google Scholar 

  8. Paleos CM, Tsiourvas D (1995) Angew Chem Int Ed Engl 34:1696

    CAS  Google Scholar 

  9. Kato T, Frechet JMJ (1995) Macromol Symp 8:311

    Google Scholar 

  10. Bazuin CG (1998) In: Brostow W (ed) Mechanical and thermophysical properties of polymer liquid crystals. Chapman and Hall, London, pp 59–100

  11. (a) Plate NA, Shibaev VP (1980) Comb-shaped polymers and liquid crystals (in Russian). Chemistry, Moscow; (b) Gordon M, Plate N (eds) (1987) Liquid crystal polymers. Plenum, New York

  12. Cladis PE, Brand HR (1984) Phys Rev Lett 52:2261

    Article  CAS  Google Scholar 

  13. Czuprinski K, Dabrowsky R, Przedmojski J (1989) Liq Cryst 4:429

    Google Scholar 

  14. Czuprinski K, Dabrowsky R, Przedmojski J (1989) Liq Cryst 5:505

    Google Scholar 

  15. Weidner S, Wolff D, Springer J (1996) Liq Cryst 20:587

    CAS  Google Scholar 

  16. Weidner S, Wolff D, Springer J (1997) Liq Cryst 22:193

    Article  CAS  Google Scholar 

  17. Borthwick IA, Cowie JMG (1998) Polym Adv Technol 9:128

    Article  CAS  Google Scholar 

  18. Bobrowsky AY, Boiko NI, Schaumburg K, Shibaev VP (2000) Colloid Polym Sci 278:671

    Article  Google Scholar 

  19. Barmatov EB, Medvedev AV, Ivanov SA, Barmatova MV, Shibaev VP (2001) Polym Sci 43: 285.

    Google Scholar 

  20. Barmatov EB, Filippov AP, Shibaev VP (2001) Liq Cryst 28:511

    Article  CAS  Google Scholar 

  21. Barmatov E, Filippov A, Andreeva L, Barmatova M, Kremer F, Shibaev V (1999) Macromol Rapid Commun 20: 521.

    Article  CAS  Google Scholar 

  22. Filippov AP, Andropov VV, Barmatov EB, Kremer F, Barmatova MV, Shibaev VP (2000): Liq Cryst 27:1585–1594

    Google Scholar 

Download references

Acknowledgement

This research was supported by the RFBR (grants 01-03-32943 and 02-03-32123).

Author information

Authors and Affiliations

  1. Department of Chemistry, Moscow State University, Vorob’evy gory, 119992, Moscow, Russia

    E. B. Barmatov, A. A. Obrascov, D. A. Pebalk & M. V. Barmatova

Authors
  1. E. B. Barmatov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. A. Obrascov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. D. A. Pebalk
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. M. V. Barmatova
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to E. B. Barmatov.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Barmatov, E.B., Obrascov, A.A., Pebalk, D.A. et al. Chiral nematic phase in hydrogen-bonded blends of a side-chain smectic polymer with low molar mass dopants. Colloid Polym Sci 282, 530–534 (2004). https://doi.org/10.1007/s00396-003-0979-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00396-003-0979-x

Keywords

Search

Navigation