1244040-65-0Relevant academic research and scientific papers
Synthesis and study of binuclear calix[4]arene Schiff base Mn(II) complexes as catalyst in the presence of PhIO for the catalytic oxidation of olefin
Patel, Ravindra V.,Panchal, Jayesh G.,Mistry, Bhoomika R.,Menon, Shobhana K.
, p. 473 - 480 (2012)
The binuclear Mn(II) complexes of calix[4]arene substituted 2-vanillin and 2-hydroxy naphthaldimine, Schiff bases (Mn2L1 and Mn 2L2) have been synthesized, characterized and employed as models to mimic monooxyge
Synthesis and study of binuclear calix[4]arene Schiff base Co(II) complexes as catalyst in the presence of PhIO for the catalytic oxidation of olefin
Patel, Ravindra V.,Panchal, Jayesh G.,Menon, Shobhana K.
, p. 63 - 71 (2010)
The binuclear Co(II) complexes of calix[4]arene substituted 2-vanillin (R1) and 2-hydroxy naphthaldimine (R2), Schiff bases (Co2L1 and Co2L2) have been synthesized, characterized and employ
Liquid crystals based on calix[4]arene Schiff bases
Patel, Ravindra V.,Panchal, Jayesh G.,Rana,Menon, Shobhana K.
, p. 285 - 295 (2011/12/16)
New liquid crystals based on calix[4]arene Schiff base were prepared by the reaction of tetraamino-calix[4]arene with aldehydes (4-hydroxy benzaldehyde, 2-vanillin, 4-vanillin and 2-hydroxy naphthaldehyde). Dielectric investigations on a magnetically oriented sample forming N, SmA, and SmC phases were carried out. The dielectric constant (ε' and ε) and dielectric loss (tan δ) have been determined as a function of frequency (20 Hz-2 MHz). The synthesized derivatives were purified and characterized by FT-IR, 1H-NMR, 13C-NMR and MALDI-TOF MS. All the synthesized compounds were investigated for liquid crystalline properties using DSC (Differential Scanning Calorimetry), DTA (Differential Thermal Analysis) and POM (Polarizing Optical Microscopy) attached with a hot stage. They generally exhibited nematic and typical fanlike or mosaic texture, which suggest the ordered smectic mesophases. Compounds were found to adopt a specific molecular structure due to the rigid bowl like calix[4]arene core, i.e., a cone-like structure with mesogenic units aligned within the molecule.
