108679-71-6Relevant articles and documents
Development of nematic and orthogonal smectic phases in short-core fluorinated hockey-stick shaped liquid crystal compounds
Upadhyaya, Kalpana,Ghosh, Sharmistha,Khan, Raj Kumar,Pratibha,Rao, Nandiraju V.S.
, (2020)
Here we report synthesis and investigations on novel short-core hockey-stick shaped molecules bearing a 4-n-alkyloxy-2-hydroxybenzylidene moiety at one end and polar fluoro-biphenyl moiety at the other end. The polar chloro and fluoro substituent at the lateral position of the core confers nematic and orthogonal smectic mesomorphism. The mesophase morphology is characterized by polarizing optical microscopy (POM), differential scanning calorimetry (DSC), X-ray diffraction (XRD), electro-optical study and dielectric spectroscopy. The fluorinated compounds 1b (n = 16) and 1c (n = 18) have long terminal hydrocarbon tail and show orthogonal smectic phases with antiferroelectric switching behaviour. The chlorinated compound 2e (n = 8) with relatively short terminal chain length exhibits only a monotropic nematic phase on cooling. The nematic phase is comprised of cybotactic clusters as confirmed by XRD and exhibits electro-optic switching. The compound 2i (n = 12) manifests a short range enantiotropic nematic and additional orthogonal smectic phase. Dielectric spectroscopy reveals polar correlations in the nematic and smectic phases.
SUBSTITUTED QUINOLINES AND METHODS FOR TREATING CANCER
-
Paragraph 0378, (2018/05/24)
Substituted quinoline compounds, methods of making such compounds, pharmaceutical compositions and medicaments comprising such compounds, and methods of using such compounds to treat, prevent or ameliorate cancer are provided.
A new family of four-ring bent-core nematic liquid crystals with highly polar transverse and end groups
Upadhyaya, Kalpana,Gude, Venkatesh,Mohiuddin, Golam,Nandiraju, Rao V.S.
, p. 26 - 35 (2013/03/14)
Non-symmetrically substituted four-ring achiral bent-core compounds with polar substituents, i.e.., chloro in the bent or transverse direction in the central core and cyano in the lateral direction at one terminal end of the molecule, are designed and syn