New para-substituted non-symmetric isoflavones for their fast photo-switching ability: synthesis and their liquid crystal characterization.
نویسندگان
چکیده
The first example of non-symmetric isoflavone-based fast photo-switchable liquid crystals with different functional groups at the terminal position were synthesized and characterized. Polarizing optical microscopy study revealed that the compounds showed least ordered nematic phase. Optical photo switching study exhibited very fast photoisomerization effect in solution. The E-Z and Z-E conversion occurred around 3-5s and 40-700 s respectively. This is also the first example of para-substituted non-symmetric isoflavone liquid crystals exhibiting very fast photo switching property in solution. Argument based on non-symmetrical behaviour might be the reason for the observed behaviour.
منابع مشابه
Synthesis and Characterization of A New Series of “Mesogen-Jacketed Liquid Crystal Polymers” Based on the Newly Synthesized Vinylterephthalic Acid
The synthesis and characterization of a new series of mesogen-jacketed liquid crystal polymers, poly{2,5-bis[(para-substituted phenyl)oxycarbonyl]styrene}s, based on 2-vinylterephthalic acid are reported. These polymers formed very stable liquid crystal phases above the glass transition temperatures. A brief comparison of the properties of the new polymers with those of some previously reported...
متن کاملGreen synthesis, characterization, and photo catalytic degradation efficiency of Trimanganese Tetroxide nanoparticle
Mn3O4 nanoparticles has been synthesised from Manganese (II) acetate and Simarouba Glauca leaf extract using microwave heating. This novel method of synthesis of Mn3O4 is fast, low-cost, non-toxic and environment friendly. The synthesised product was characterised by powder X-ray diffraction(XRD),Fourier transform infrared spectroscopy( FT-IR), Ultraviolet-Visible spectroscopy( UV-Visible), X-r...
متن کاملSynthesis and Spectroscopic Characterization of a Series of New Anthralin Derivatives and Their Corresponding Spiro-Hetherocycles
Several 10-substituted anthralins were readily prepared. Their oxidation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone gave the corresponding novel heteroatomic systems. All derivatives were fully characterized by IR, Mass and 1HNMR spectroscopy.
متن کاملSynthesis and characterization of fluorescent acenequinones as dyes for guest-host liquid crystal displays.
Syntheses and spectroscopic properties of alkoxy-substituted para-acenequinones are reported. These compounds showed excellent alignment in nematic liquid crystals as evidenced by polarized UV-vis absorption and fluorescence measurements. [structure: see text]
متن کاملSynthesis,Characterization, Biological Evaluation and anti corrosion activity of some new bis-piperidone Derivatives
Aseries of piperidine derivatives was synthesis by the reaction between substituted benzaldhyde ,pentanone-3,and ammonium acetate by refluxining for 1-2 hr in ethanol and the derivatives refluxed with (4,4'-Diaminodiphenyl sulphone) yielded bispiperidine ,the structures of the synthesized compounds were confirmed by spectroscopy analysis , The reported compounds were screened for their antibact...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
دوره 135 شماره
صفحات -
تاریخ انتشار 2015