Analysis of liquid crystal mixtures

Martin, Trevor I.; Haas, W.

doi:10.1021/ac00227a002

Cited by 12 publications

(2 citation statements)

References 5 publications

(2 reference statements)

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“…Physical-chemical methods used to purify liquid crystals can be applied multiple times to reach a certain level of the chemical purity. The chemical purity of synthesized liquid crystal materials can be checked with the help of high performance liquid chromatography (HPLC), nuclear magnetic resonance (NMR) and electronic paramagnetic resonance (EPR), and differential scanning calorimetry (DSC), to name a few [82,[89][90][91]. However, if not specifically tailored, these methods do not provide information on the ionic content of liquid crystals [82].…”

Section: Classical Methods Of Liquid Crystal Purificationmentioning

confidence: 99%

Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena

2015

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Abstract:The presence of ions in liquid crystals is one of the grand challenges that hinder the application of liquid crystals in various devices, which include advanced 3-D and flexible displays, tunable lenses, etc. Not only do they compromise the overall performance of liquid crystal devices, ions are also responsible for slow response, image sticking, and image flickering, as well as many other negative effects. Even highly purified liquid crystal materials can get contaminated during the manufacturing process. Moreover, liquid crystals can degrade over time and generate ions. All of these factors raise the bar for their quality control, and increase the manufacturing cost of liquid crystal products. A decade of dedicated research has paved the way to the solution of the issues mentioned above through merging liquid crystals and nanotechnology. Nano-objects (guests) that are embedded in the liquid crystals (hosts) can trap ions, which decreases the ion concentration and electrical conductivity, and improves the electro-optical response of the host. In this paper, we (i) review recently published works reporting the effects of nanoscale dopants on the electrical properties of liquid crystals; and (ii) identify the most promising inorganic and organic nanomaterials suitable to capture ions in liquid crystals.

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Section: Classical Methods Of Liquid Crystal Purificationmentioning

confidence: 99%

Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena

2015

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“…There are a lot of requirements for a liquid crystal to be used in practice and usually pure mesogenic compounds do not fulfil these requirements (1,2,3). To obtain the desirable properties, the usual procedure is to prepare, at random, more or less complicated mixtures of these compounds and to select the most suitable empirically.…”

Section: Introductionmentioning

confidence: 99%

Study of the mesomorphic behaviour of ternary mixtures of alkoxybenzalazines by means of the Scheffé design

Marcos

Meléndez

Serrano

et al. 1983

Bulletin des Soc Chimique

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The Scheffe design was applied to a ternary mixture of 4,4'-diethoxy-2,2'-dihydroxy-a,a'-dimethylbenzalazine, 4,4'-dipropoxy-2,2'-dihydroxy-a,cc'-dimethylbenzalazine and 4,4'-dibutoxy-2,2'-dihydroxy-a,a'-dimethylbenzalazine in order to improvetlae physical properties of each individual component. Twentytwo different mixtures were selected and their thermodynamical properties measured. A third order model was chosen to account for the experimental measurements. Thus, it was possible to determine the best region in the ternary diagram.

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Mass spectra of liquid crystals I. Cyclohexylphenyl and bicyclohexylphenyl derivatives

Leclercq¹,

Bogaert²

1990

Org. Mass Spectrom.

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Analysis of liquid crystal mixtures

Cited by 12 publications

References 5 publications

Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena

Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena

Study of the mesomorphic behaviour of ternary mixtures of alkoxybenzalazines by means of the Scheffé design

Mass spectra of liquid crystals I. Cyclohexylphenyl and bicyclohexylphenyl derivatives

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