TITLE

Switchable fluorescent liquid crystals

AUTHOR(S)
Salamonczyk, M.; Kovarova, A.; Svoboda, J.; Pociecha, D.; Gorecka, E.
PUB. DATE
October 2009
SOURCE
Applied Physics Letters;10/26/2009, Vol. 95 Issue 17, p171901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Properties of new fluorescent, mesogenic compounds bearing [2]benzothiophene moiety are presented. Materials show strong fluorescence of green or red light with quantum yield up to 30%, in liquid crystalline phases the emitted light is strongly polarized. For material forming ferroelectric liquid crystal or doped into polar smectic matrix, the possibility of controlling fluorescence light intensity through the application of electric field is shown.
ACCESSION #
44909878

 

Related Articles

  • Anomalous orientation of ferroelectric liquid crystal films in an electric field. Andreeva, P. O.; Dolganov, V. K.; Meletov, K. P. // JETP Letters;9/25/97, Vol. 66 Issue 6, p442 

    An anomalous orientation of ferroelectric liquid crystals in an electric field is observed. The tilt planes of the molecules are oriented in a direction parallel to the electric field. The anomalous orientation is observed in freely suspended films above the smectic-C[sup *]�smectic-A bulk...

  • Conversion of Acoustic Bending Vibration Frequency in a Freely Suspended Ferroelectric Liquid-Crystal Film. Yablonskii, S. V.; Nakano, K.; Ozaki, M.; Yoshino, K. // JETP Letters;2/10/2003, Vol. 77 Issue 3, p140 

    A nonlinear acoustic effect was observed experimentally in a freely suspended ferroelectric liquid-crystal film. The effect consisted of a change in the frequency of the film bending vibrations under the action of a varying electric field. The up- and down-conversion efficiencies were found to...

  • Experimental indication of macroscopic polarization parallel to the tilt plane in free-standing films of ferroelectric liquid crystals 8SI* and DOBAMBC. Andreeva, P. O.; Dolganov, V. K.; Gors, C.; Fouret, R. // Journal of Experimental & Theoretical Physics;Oct99, Vol. 89 Issue 4, p713 

    Optical reflectivity and x-ray studies have been conducted on free-standing films and bulk samples of ferroelectric liquid crystals near the smectic-A-smectic-C[sup *] transition. A tilt plane rotation with respect to the direction of an applied electric field is found in the ferroelectric films...

  • Temperature- and Field-Induced Transitions in Free-Standing Films of an Antiferroelectric Liquid Crystal. Dolganov, P. V.; Demikhov, E. I.; Suzuki, Y.; Fukuda, A. // Journal of Experimental & Theoretical Physics;Oct2002, Vol. 95 Issue 4, p728 

    Thin free-standing films of a compound with the smectic-C*[SUBA] and smectic-C*α phases were investigated by means of depolarized microscopy and optical reflectivity. In thin films, the smectic phase sequence C*[SUBA]- C*α-A is replaced by a series of temperature- and field-induced...

  • Dynamic response of electro-optic effect in free-standing ferroelectric liquid crystal film. Uto, Sadahito; Ohtsuki, Hideyo; Ozaki, Masanori; Yoshino, Katsumi // Applied Physics Letters;9/9/1996, Vol. 69 Issue 11, p1503 

    A study of an electro-optic response in a free-standing ferroelectric liquid crystal film has been carried out. The response time becomes shorter with increasing electric field and, especially at a certain threshold of electric field, it changes in stepwise by three orders of magnitude. The...

  • Nanometer-scale resolution and depth discrimination in near-field optical microscopy studies of electric-field-induced molecular reorientation dynamics. Mei, Erwen; Higgins, Daniel A. // Journal of Chemical Physics;5/8/2000, Vol. 112 Issue 18 

    Electric-field-induced molecular reorientation dynamics in polymer-dispersed liquid crystal (PDLC) films are characterized in detail using near-field scanning optical microscopy (NSOM) methods developed previously [Mei and Higgins, J. Phys. Chem. A 102, 7558 (1998)]. In these experiments, a...

  • Linear Electromechanical Effect in Free-Standing Ferroelectric Liquid-Crystalline Films. Yablonskii, S. V.; Mikhailov, A. S.; Nakano, K.; Ozaki, M.; Yoshino, K. // Journal of Experimental & Theoretical Physics;Jul2001, Vol. 93 Issue 1, p94 

    Mechanical oscillations of free-standing films based on ferroelectric liquid crystals were studied by optical methods. The intrinsic oscillation modes in the samples were excited by applying an alternating electric field parallel to the film surface. The surface viscosity of the films determined...

  • Heat-driven and electric-field-driven bistable devices using dye-doped nematic liquid crystals. Jin Ki Kim; Van Le, Khoa; Dhara, Surajit; Araoka, Fumito; Ishikawa, Ken; Takezoe, Hideo // Journal of Applied Physics;Jul2010, Vol. 107 Issue 12, p123108 

    We have demonstrated memory and rewritable bistable devices based on an anchoring transition of a nematic liquid crystal on a perfluoropolymer surface. Spontaneous orientation changes between planar and homeotropic occur on cooling and heating with a large temperature hysteresis. Photo (heat)...

  • Echo response in ferroelectric liquid crystals. Popov, V. A.; Kessel’, A. R. // Physics of the Solid State;Jul98, Vol. 40 Issue 7, p1246 

    It is proposed that the kinetics and dynamics of ferroelectric liquid crystals may be studied by using the echo responses to the pulsed action of a microwave electric field. For ferroelectric liquid crystals, with homogeneously oriented molecules, calculations are made of the echo signals for...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics