OSA's Digital Library

Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 1, Iss. 8 — Dec. 1, 2011
  • pp: 1463–1470

Self-orienting liquid crystal doped with polymer-azo-dye complex

Elena Ouskova, Jaana Vapaavuori, and Matti Kaivola  »View Author Affiliations

Optical Materials Express, Vol. 1, Issue 8, pp. 1463-1470 (2011)

View Full Text Article

Enhanced HTML    Acrobat PDF (1173 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We investigate into a new type of liquid crystal (LC) heterogeneous system that contains hydrogen-bonded polymer-azo-dye complexes at a low concentration. The suspension shows a unique self-orienting property and a spontaneous anchoring transition from planar to homeotropic alignment on a rubbed polyimide surface. We suggest a simple polymer adsorption model to explain the universal homeotropic orienting property. The complex-doped LC suspension can be used as a new liquid crystalline material that does not require any additional alignment processing or treatment.

© 2011 OSA

OCIS Codes
(160.0160) Materials : Materials
(160.3710) Materials : Liquid crystals
(160.5470) Materials : Polymers
(160.5335) Materials : Photosensitive materials

ToC Category:
Liquid Crystals

Original Manuscript: August 18, 2011
Revised Manuscript: October 13, 2011
Manuscript Accepted: October 13, 2011
Published: November 3, 2011

Virtual Issues
Liquid Crystal Materials for Photonic Applications (2011) Optical Materials Express

Elena Ouskova, Jaana Vapaavuori, and Matti Kaivola, "Self-orienting liquid crystal doped with polymer-azo-dye complex," Opt. Mater. Express 1, 1463-1470 (2011)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. E. Ouskova, Yu. Reznikov, S. V. Shiyanovskii, L. Su, J. L. West, O. V. Kuksenok, O. Francescangeli, and F. Simoni, “Photo-orientation of liquid crystals due to light-induced desorption and adsorption of dye molecules on an aligning surface,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.64(5), 051709 (2001). [CrossRef] [PubMed]
  2. E. Ouskova, O. Buchnev, V. Reshetnyak, Yu. Reznikov, and H. Kresse, “Dielectric relaxation spectroscopy of a nematic liquid crystal doped with ferroelectric Sn2P2S6 nanoparticles,” Liq. Cryst.30(10), 1235–1239 (2003). [CrossRef]
  3. E. Ouskova, O. Buluy, C. Blanc, H. Dietsch, and A. Mertelj, “Enhanced magneto-optical properties of suspensions of spindle type mono-dispersed hematite nano-particles in liquid crystal,” Mol. Cryst. Liq. Cryst. (Phila. Pa.)525(1), 104–111 (2010). [CrossRef]
  4. E. Ouskova, D. Lysenko, S. Ksondzyk, L. Cseh, G. H. Mehl, V. Reshetnyak, and Yu. Reznikov, “Strong cubic optical nonlinearity of gold nanoparticles suspension in nematic liquid crystal,” Mol. Cryst. Liq. Cryst. (Phila. Pa.)545(1), 123/[1347]–132/[1356] (2011). [CrossRef]
  5. O. Buluy, S. Nepijko, V. Reshetnyak, E. Ouskova, V. Zadorozhnii, A. Leonhardt, M. Ritschel, G. Schönhense, and Yu. Reznikov, “Magnetic sensitivity of dispersion of aggregated ferromagnetic carbon nanotubes in liquid crystal,” Soft Matter7(2), 644–649 (2011). [CrossRef]
  6. S.-C. Jeng, C.-W. Kuo, H.-L. Wang, and C.-C. Liao, “Nanoparticles-induced vertical alignment in liquid crystal cell,” Appl. Phys. Lett.91(6), 061112 (2007). [CrossRef]
  7. G. P. Crawford and S. Zumer, eds., Liquid Crystals in Complex Geometries (Taylor and Francis, 1996).
  8. L.-C. Chien, M. N. Boyden, A. J. Walz, and C. M. Citano, “Recent advances in materials for polymer stabilized liquid crystals,” in ACS Symposium Series 632: Recent Advances in Liquid Crystalline Polymers, A. I. Isayev, ed. (1996), Chap. 11, p. 182.
  9. D. Fedorenko, E. Ouskova, V. Reshetnyak, and Yu. Reznikov, “Evolution of light-induced anchoring in dye-doped nematics: experiment and model,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.73(3), 031701 (2006). [CrossRef] [PubMed]
  10. D. Fedorenko, K. Slyusarenko, E. Ouskova, V. Reshetnyak, K.-R. Ha, R. Karapinar, and Yu. Reznikov, “Light-induced gliding of the easy orientation axis of a dye-doped nematic liquid crystal,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.77(6), 061705 (2008). [CrossRef] [PubMed]
  11. E. Ouskova, D. Fedorenko, Yu. Reznikov, S. V. Shiyanovskii, L. Su, J. L. West, O. V. Kuksenok, O. Francescangeli, and F. Simoni, “Hidden photoalignment of liquid crystals in the isotropic phase,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.63(2), 021701 (2001). [CrossRef] [PubMed]
  12. D. Luo, X. W. Sun, H. T. Dai, and H. V. Demir, “Polarization-dependent circular Dammann grating made of azo-dye-doped liquid crystals,” Appl. Opt.50(15), 2316–2321 (2011). [CrossRef] [PubMed]
  13. A. Y.-G. Fuh, J.-C. Chen, S.-Y. Huang, and K.-T. Cheng, “Binary liquid crystal alignments based on photoalignment in azo dye-doped liquid crystals and their application,” Appl. Phys. Lett.96(5), 051103 (2010). [CrossRef]
  14. E. Ouskova, N. Aryasova, V. Boichuk, D. Fedorenko, K. Slyusarenko, and Yu. Reznikov, “Asymmetry peculiarities of surface-mediated liquid crystals gratings recorded due to light-induced anchoring,” Mol. Cryst. Liq. Cryst. (Phila. Pa.)527(1), 43/[199]–52/[208] (2010). [CrossRef]
  15. A. Natansohn and P. Rochon, “Photoinduced motions in azo-containing polymers,” Chem. Rev.102(11), 4139–4176 (2002). [CrossRef] [PubMed]
  16. N. Viswanathan, D. Kim, S. Bian, J. Williams, W. Liu, L. Li, L. Samuelson, J. Kumar, and S. Tripathy, “Surface relief structures on azo polymer films,” J. Mater. Chem.9(9), 1941–1955 (1999). [CrossRef]
  17. A. Priimagi, J. Vapaavuori, F. J. Rodriguez, C. F. J. Faul, M. T. Heino, O. Ikkala, M. Kauranen, and M. Kaivola, “Hydrogen-bonded polymer–azobenzene complexes: enhanced photoinduced birefringence with high temporal stability through interplay of intermolecular interactions,” Chem. Mater.20(20), 6358–6363 (2008). [CrossRef]
  18. A. Priimagi, K. Lindfors, M. Kaivola, and P. Rochon, “Efficient surface-relief gratings in hydrogen-bonded polymer-azobenzene complexes,” ACS Appl. Mater. Interfaces1(6), 1183–1189 (2009). [CrossRef] [PubMed]
  19. C. F. J. Faul and M. Antonietti, “Ionic self-assembly: facile synthesis of supramolecular materials,” Adv. Mater. (Deerfield Beach Fla.)15(9), 673–683 (2003). [CrossRef]
  20. C. McArdle, ed., Side Chain Liquid Crystal Polymers (Blackie, 1989).
  21. J. Vapaavuori, V. Valtavirta, A. Priimagi, T. Alasaarela, J. Mamiya, A. Shishido, and M. Kaivola, “Efficient surface structuring and photoalignment of supramolecular polymer-azobenzene complexes through rational chromophore design,” J. Mater. Chem. (to be published).
  22. V. Shibaev, A. Bobrovsky, and N. Boiko, “Photoactive liquid crystalline polymer systems with light-controllable structure and optical properties,” Prog. Polym. Sci.28(5), 729–836 (2003). [CrossRef]
  23. polyimide poly(4,4'-oxydiphenylene-pyromellitimide was synthesized by I. Gerus (Institute of Bioorganic Chemistry and Petrochemistry, Ukraine), analogue to Kapton® from DuPont.
  24. S. Faetti and P. Marianelli, “Strong azimuthal anchoring energy at a nematic-polyimide interface,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.72(5), 051708 (2005). [CrossRef] [PubMed]
  25. B. S. Ban and Y. B. Kim, “Materials and rubbing dependence on azimuthal anchoring energy of rubbed polyimide surfaces,” J. Phys. Chem. B103(19), 3869–3871 (1999). [CrossRef]
  26. L. M. Blinov, Electro-Optical and Magneto-Optical Properties of Liquid Crystals (Wiley, 1983).
  27. S.-T. Wu, “Absorption measurements of liquid crystals in the ultraviolet, visible, and infrared,” J. Appl. Phys.84(8), 4462–4465 (1998). [CrossRef]
  28. Y. Lu, Y. J. Choi, H. S. Lim, D. Kwak, C. Shim, S. G. Lee, and K. Cho, “pH-Induced antireflection coatings derived from hydrogen-bonding-directed multilayer films,” Langmuir26(22), 17749–17755 (2010). [CrossRef] [PubMed]
  29. L. M. Blinov and V. G. Chigrinov, Electrooptic Effects in Liquid Crystal Materials (Springer, 1994).
  30. N. V. Madhusudana and R. Pratibha, “Elasticity and orientational order in some cyanobiphenyls: Part IV. Reanalysis of the data,” Mol. Cryst. Liq. Cryst. (Phila. Pa.)89(1-4), 249–257 (1982). [CrossRef]
  31. W.-Z. Chen, Y.-T. Tsai, and T.-H. Lin, “Photoalignment effect in a liquid-crystal film doped with nanoparticles and azo-dye,” Appl. Phys. Lett.94(20), 201114 (2009). [CrossRef]
  32. S.-C. Hong, M. Oh-e, X. Zhuang, Y. R. Shen, J. J. Ge, F. W. Harris, and S. Z. D. Cheng, “Orientations of side chains and adsorbed liquid crystal molecules on a rubbed polyimide surface studied by optical second harmonic generation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.63(5), 051706 (2001). [CrossRef] [PubMed]
  33. R. Guo, Yu. Reznikov, K. Slyusarenko, and S. Kumar, “Dynamics of molecular exchange between aligning adsorbed film of liquid crystal and the bulk,” Appl. Phys. Lett.92(12), 121911 (2008). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited