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Showing 1 to 5 of 5 for “"Tolane"”.
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Low Absorption Liquid Crystal Materials for Midwave Infrared
… window. Long phenyl ring compounds, fluorinated tolane materials, and chlorinated terphenyl mixtures are explored; as well as a look as the potential bromine might introduce for future development. In this thesis, we first review the current materials and their performance in the mid-wave …
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Substitution and photolytic rearrangements in three-member ring compounds
… 2,3- diphenylindenone, tolane, benzoic acid, 1,2,3-triphenylpropen-1-one and a polymer. Samples of 1,2,3-triphenylcyclopropene, 3-methyl-, 3-phenyl-, and 3-benzyl-1,2,3-triphenylcyclopropene were prepared and subjected to photolytic rearrangement. Each product yielded the …
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Liquid Crystal Materials And Tunable Devices For Optical Communications
… infrared photonic devices. The isothiocyanato tolane liquid crystals exhibit a high birefringence and low viscosity. The high birefringence LC dramatically improves the PSLC contrast ratio while keeping a low drive voltage and fast response time. A free-space optical device by PNLC is …
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High Birefringence And Low Viscosity Liquid Crystals
… developed some high birefringence isothiocyanato tolane LC compounds with birefringence ~0.4, and super high birefringence isothiocyanato biphenyl-bistolane LC compounds with birefringence as high as ~0.7. Moreover, we have studied the photostability of several high birefringence LC compounds, …
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Synthesis of Crowded Tolanes: Models for Molecular Recognition
… synthesized octasubstituted diarylacetylenes (tolanes) as potential model systems to measure intramolecular noncovalent interactions. The Stille cross-coupling reaction allowed synthesis of both arylacetylenes and tolanes from aryl iodides. The Stille reaction is usually slow for electron rich …