5-Arylazoimidazo[2, I-b]-1, 3, 4-Thiadiazoles—New Dichroic T-Dyes For LCD

Иващенко, А. В.; Petrova, O. S.; Титов, В. В.

doi:10.1080/00268948708080211

Cited by 12 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the six-membered heterocycles such as 2,6-disubstitued pyridine [5], tetrahydropyran [6] and piperazine [7][8][9] preserve the bending angle around 120 • , the introduction of fivemembered heterocyclic units such as 1,3,4-oxadiazole [10][11][12], 1,2,4-oxadiazole [13], 1,3-oxazole [14], 1,3,4-thiadiazole [2,15] and thiophene [16] increases the bend angle, and both calamitic and banana phases were observed. The incorporation of a fluorescent moiety into the molecule leads to new functional LC materials, which can be tuned by an external stimulus [17][18][19][20]. Changes of the polarised absorption or emission intensity by the applied electric field give the possibility to control the polarisation of emitted or absorbed light by the electric field [21,22].…”

Section: Introductionmentioning

confidence: 99%

[2]Benzothiophene bent-shaped liquid crystals

et al. 2010

View full text Add to dashboard Cite

New liquid crystalline (LC) compounds containing the [2]benzothiophene chromophore unit have been synthesised and their mesomorphic properties studied. Mesomorphic and fluorescent properties have been modified by various chemical moieties. Among others, terminal fluoroalkyl and/or chiral chains were introduced to stabilise mesophases and support the formation of polar phases. In spite of the bent shape due to the central 1,3-diphenylbenzo[c]thiophene unit, all compounds exhibit phases typical for the rod-like LC: nematic, smectic A and smectic C or their chiral analogues using the chiral (S)-C 2 H 5 CH(CH 3 )(CH 2 ) 6 CO or (S)-C 10 H 21 OCH(CH 3 )CO chain. The orientational order in the nematic phase was studied by polarised infrared measurements. The fluorescent properties of the studied compounds have been measured and their parameters established.

show abstract

Section: Introductionmentioning

confidence: 99%

[2]Benzothiophene bent-shaped liquid crystals

et al. 2010

View full text Add to dashboard Cite

show abstract

“…͓doi:10.1063/1.3250163͔ Luminescent materials emitting polarized light attract a lot of attention for their potential use in flat panel displays and other optoelectronic devices. [1][2][3][4] Among such materials liquid crystalline ͑LC͒ dyes with their anisotropic properties are of particular interest. Their appealing advantage is that the polarized emission/absorption intensity can be controlled by application of electric field that changes the direction of molecular axes in respect to the polarizer direction.…”

mentioning

confidence: 99%

Switchable fluorescent liquid crystals

Salamończyk

Kovářová

Svoboda

et al. 2009

Applied Physics Letters

View full text Add to dashboard Cite

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.

show abstract

Synthesis, Structural and Spectroscopic Characterization of Cr^III, Fe^III, Co^III, Ni^II and Cu^II Complexes with an Asymmetric 1,3,4‐Thiadiazole Ligand

et al. 2016

View full text Add to dashboard Cite

The reaction of the new asymmetric 1,3,4-thiadiazole-based ligand 2-[(5-ethylthio-1,3,4-thiadiazol-2-yl)hydrazonomethyl]phenol (H 1 ETHP) with various third-row transition metal salts resulted in the formation of six new mononuclear complexes [Cr(ETHP) 2 ]ClO 4 (1), [Fe(ETHP) 2 ][FeCl 4 ] (2), [Co(ETHP)(ETHP -H )] (3), [Ni(ETHP)(H 1 ETHP)]Cl (4), [Ni(ETHP)(H 1 ETHP)](ClO 4 ) (5), [Ni(ETHP)(H 1 ETHP)]Br (6), and one tetranuclear complex [Cu 2 Cl 3 (ETHP)(H 1 ETHP)] 2 (7). H 1 ETHP and all complexes have been analyzed by single crystal X-ray diffraction. Structural analysis of 1-6 reveals complexes of the [ML 2 ] n+type (n = 0,1), in which the mono anionic ligand ETHP coordinates in a tridentate NNO fashion via its imine, thiadiazole and [a]

show abstract

5-Arylazoimidazo[2, I-b]-1, 3, 4-Thiadiazoles—New Dichroic T-Dyes For LCD

Cited by 12 publications

References 6 publications

[2]Benzothiophene bent-shaped liquid crystals

[2]Benzothiophene bent-shaped liquid crystals

Switchable fluorescent liquid crystals

Synthesis, Structural and Spectroscopic Characterization of Cr^III, Fe^III, Co^III, Ni^II and Cu^II Complexes with an Asymmetric 1,3,4‐Thiadiazole Ligand

Contact Info

Product

Resources

About

5-Arylazoimidazo[2, I-b]-1, 3, 4-Thiadiazoles—New Dichroic T-Dyes For LCD

Cited by 12 publications

References 6 publications

[2]Benzothiophene bent-shaped liquid crystals

[2]Benzothiophene bent-shaped liquid crystals

Switchable fluorescent liquid crystals

Synthesis, Structural and Spectroscopic Characterization of CrIII, FeIII, CoIII, NiII and CuII Complexes with an Asymmetric 1,3,4‐Thiadiazole Ligand

Contact Info

Product

Resources

About

Synthesis, Structural and Spectroscopic Characterization of Cr^III, Fe^III, Co^III, Ni^II and Cu^II Complexes with an Asymmetric 1,3,4‐Thiadiazole Ligand