Dynamic grating recording in lyotropic ionic smectics of metal alkanoates doped with electrochromic impurities

Bordyuh, H.; Garbovskiy, Yuriy; Bugaychuk, S.; Klimusheva, G. V.; Mirnaya, T. A.; Yaremchuk, G. G.; Polishchuk, A. P.

doi:10.1016/j.optmat.2008.11.021

Cited by 16 publications

(12 citation statements)

References 14 publications

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“…Recently, a variety of metal alkanoates and their various phase states have been used to fabricate optical and nonlinear optical materials, for instance double-layer cells such as "photosensitive film -ionic lyotropic liquid crystal" [5], ionic lyotropic liquid crystals doped with electrochromic impurities [5,6], and mesomorphic glasses containing dissolved dye molecules [7]. It may be noted that all the composite materials mentioned can also be considered to be homogeneous or inhomogeneous "guest-host" systems, the guest being photosensitive dopants or films with strong and rapid nonlinear optical response, and the host being soft or rigid mesomorphic ionic matrices which can be used as orienting, holding, viscoelastic, transport or heatconducting anisotropic media [5][6][7][8][9]. Such novel guesthost composite materials exhibit rapid (∼ ns-ps) and sufficiently strong (χ (3) ∼10-8 esu) cubic nonlinear optical response, and are promising for a variety of applications.…”

Section: Introductionmentioning

confidence: 99%

Tunable optical and nonlinear optical response of smectic glasses based on cobalt alkanoates

Garbovskiy¹,

Gridyakina²,

Klimusheva³

et al. 2010

Liquid Crystals

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The nonlinear optical response of anisotropic smectic glasses based on cobalt alkanoates has been studied using dynamic holography. Laser-dynamic gratings induced by the action of nanosecond laser pulses were observed and analysed for such materials. It was found that the cubic optical nonlinearity of all the anisotropic glasses studied had an electronic origin in the nanosecond range, caused by nonlinear polarisation of the cobalt alkanoate complexes. Fundamental optical (refractive index and absorption coefficient) and nonlinear optical (nonlinear susceptibility and polarisability) parameters of mesomorphic glasses based on cobalt alkanoates could be tuned by varying the length of the alkanoate anion chain, thereby determining the interlayer smectic distance.

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Section: Introductionmentioning

confidence: 99%

Tunable optical and nonlinear optical response of smectic glasses based on cobalt alkanoates

Garbovskiy¹,

Gridyakina²,

Klimusheva³

et al. 2010

Liquid Crystals

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“…The V 1+• state is quenched by reverse reactions or certain chemicals (a representative material is oxygen), turning back into the initial state (V 2+ ). Since the reduction and oxidation reaction can be induced repeatedly by each stimulus, viologen is known as a stable redox-active group and used as a building block for various functional materials, such as electrochromic [ 1 , 2 , 3 , 4 , 5 ] and photoelectric conversion materials [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Design of Viologen-Based Liquid Crystals Exhibiting Bicontinuous Cubic Phases and Their Redox-Active Behavior

Kobayashi

Ichikawa

2017

Materials

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We have succeeded in developing viologen-based liquid-crystalline materials forming bicontinuous cubic phases. They are composed of amphiphilic zwitterions with a viologen ionic-head-group and sulfonyl-imide-type acids. In the bicontinuous cubic liquid-crystalline assemblies, the ionic-head groups of the amphiphiles align along a gyroid minimal surface, forming a 3D continuous viologen layer. The ionic state of the viologen-moieties can be tuned from a dication state (V2+) to a radical mono cation state (V1+•) by UV irradiation and/or electric field. This redox reaction proceeds in bulk, accompanying the change of their color from colorless to purple. Interestingly, they preserve the 3D molecular assembled structures beyond the redox reaction, which has been confirmed by polarizing optical microscopy and X-ray diffraction measurements.

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“…The latter are characterized by the presence of intrinsic ionic conductivity [5][6][7]. The unconventional properties of these materials open up new possibilities for various practical uses [8][9][10]. Ionic liquid crystals (ILC) of metal alcanoates form an insufficiently explored group of liquid crystals [11,12], which have a number of advantages comparing to traditional molecular liquid crystals.…”

Section: Introductionmentioning

confidence: 99%

“…These compounds are promising for the development of systems for the recording of information due to their intrinsic ionic conductivity, high solubility, good thermal stability, and ability to c ○ A.V. GRIDYAKINA, 2016 form mesomorphic smectic glasses [8,9,14]. Despite this, there are negligible amount of data [3,5,[15][16] on the electrical properties of oriented samples of ITLC, charge mobility, and charge concentration in such compounds.…”

Section: Introductionmentioning

confidence: 99%

Electric Properties of Ionic Thermotropic Liquid Crystals

Gridyakina¹

2016

Ukr. J. Phys.

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This work presents the results of studies of the electric properties of samples of oriented ionic thermotropic liquid crystals (ITLC) of cobalt decanoate, lead decanoate, and their binary mixture. It is found that all studied samples in the temperature range, where a liquid crystal exists, are weak electrolytes. All investigated compounds are characterized by an anisotropy of bulk conductivity caused by the ordering of molecules. The values of electric conductivity, activation energy, charge mobility, and concentration are estimated. K e y w o r d s: ionic thermotropic liquid crystals, cobalt alkanoate, lead alcanoate, binary mixture, conductivity, anisotropy of conductivity.

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Dynamic grating recording in lyotropic ionic smectics of metal alkanoates doped with electrochromic impurities

Cited by 16 publications

References 14 publications

Tunable optical and nonlinear optical response of smectic glasses based on cobalt alkanoates

Tunable optical and nonlinear optical response of smectic glasses based on cobalt alkanoates

Design of Viologen-Based Liquid Crystals Exhibiting Bicontinuous Cubic Phases and Their Redox-Active Behavior

Electric Properties of Ionic Thermotropic Liquid Crystals

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