TY - JOUR
T1 - Thermotropic behavior of sodium cholesteryl carbonate
AU - Chuealee, Rabkwan
AU - Wiedmann, Timothy S.
AU - Srichana, Teerapol
PY - 2009/1/1
Y1 - 2009/1/1
N2 - Sodium cholesteryl carbonate ester (SCC) was synthesized, and its phase behavior was studied. The chemical structure was assessed by solid-state infrared spectroscopy based on vibration analysis. The wave number at 1705 and 1276 cm-1 corresponds to a carbonyl carbonate and O-C-O stretching of SCC, respectively. Molecular structure of SCC was further investigated with 1H and 13 C NMR spectroscopy. The chemical shift, for the carbonyl carbonate resonance appeared at 155.5 ppm. A molecular mass of SCC was at m/z of 452. Differential scanning calorimetry (DSC), video-enhanced microscopy (VEM) together with polarized light microscopy, and small-angle x-ray scattering (SAXS) were used to characterize the phase behavior as a function of temperature of SCC. Liquid crystalline phase was formed with SCC. Based on the thermal properties and x-ray diffraction, it appears that SCC forms a structure analogous to the type II monolayer structure observed with cholesterol esters.
AB - Sodium cholesteryl carbonate ester (SCC) was synthesized, and its phase behavior was studied. The chemical structure was assessed by solid-state infrared spectroscopy based on vibration analysis. The wave number at 1705 and 1276 cm-1 corresponds to a carbonyl carbonate and O-C-O stretching of SCC, respectively. Molecular structure of SCC was further investigated with 1H and 13 C NMR spectroscopy. The chemical shift, for the carbonyl carbonate resonance appeared at 155.5 ppm. A molecular mass of SCC was at m/z of 452. Differential scanning calorimetry (DSC), video-enhanced microscopy (VEM) together with polarized light microscopy, and small-angle x-ray scattering (SAXS) were used to characterize the phase behavior as a function of temperature of SCC. Liquid crystalline phase was formed with SCC. Based on the thermal properties and x-ray diffraction, it appears that SCC forms a structure analogous to the type II monolayer structure observed with cholesterol esters.
UR - https://www.scopus.com/pages/publications/61749103061
UR - https://www.scopus.com/pages/publications/61749103061#tab=citedBy
U2 - 10.1557/jmr.2009.0027
DO - 10.1557/jmr.2009.0027
M3 - Article
AN - SCOPUS:61749103061
SN - 0884-2914
VL - 24
SP - 156
EP - 163
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 1
ER -