15638-19-4

Upstream product

• 76289-21-9 1-Benzyl-3-[1,2-bis-(4-methoxy-phenyl)-butyl]-thiourea 
• 76289-20-8 1-[1,2-Bis-(4-methoxy-phenyl)-butyl]-3-(4-chloro-phenyl)-thiourea 
• 76289-19-5 1-[1,2-Bis-(4-methoxy-phenyl)-butyl]-3-(4-bromo-phenyl)-thiourea 
• 76289-18-4 1-[1,2-Bis-(4-methoxy-phenyl)-butyl]-3-m-tolyl-thiourea 
• 76289-23-1 1,2-bis(p-methoxyphenyl)butylamine 
• 120-44-5 1,4-di(4-methoxyphenyl)ethanone 
• 76289-17-3 N-phenyl-N'-<1,2-bis(p-methoxyphenyl)butyl>thiourea 
• 76289-24-2 N-Benzoyl-1,2-bis(p-methoxyphenyl)butylamine 
• 855237-01-3 1,2-bis(4-methoxyphenyl)butan-2-ol 

Downstream Products

• 76289-22-0 1,2,3,4-tetrakis(p-methoxyphenyl)-1,3-diethylcyclobutane 
• 3691-71-2 4,4'-Dihydroxy α-ethyl stilbene 

Relevant academic research and scientific papers

Synthesis of New Stilbene-Based Polycarbonates

A series of polycarbonates with stilbene mesogenes has been prepared and characterized, expanding upon past work with stilbene-based polyesters and polyethers.It has been found that the stilbene mesogen, mono- or di-substituted with methyl or ethyl groups, significantly affects polymer morphology.Polycarbonates containing stilbene mesogens have been studied by differential calorimetry, polarized microscopy and X-ray diffraction.Methyl substituted stilbenes are semicrystalline and appear to be liquid crystalline, whereas ethyl substituted stilbenes are amorphous.Disubstitution lowers the transition temperatures from those values observed for monosubstituted stilbenes. - Keywords: stilbene, liquid crystal, polymer, thermotropic, amorphous, diethyl stilbestrol, x-ray diffraction, DSC, substituents