摘要:

The polarization reversal currents of a ferroelectric liquid crystalline polymer were measured. The shape of the current signal was similar to that of low molecular weight ferroelectric liquid crystals. It was found from our calculations that the shape of the current signal was independent of the polydispersity of the polymer. In ferroelectric liquid crystalline polymers, components having different molecular weights respond cooperatively with each other to the applied voltage. From the results of our simultaneous measurements of transmittance and polarization reversal current, the dipole unit and the core moiety in the side chains appear to move in a body.

ISSN:0267-8292    

DOI:10.1080/02678299308026344

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Several long chain esters of meso-tetrakis(para-carboxyphenyl)porphyrin, and two of their metal complexes (Cu, Zn) have been prepared and characterized. Each of them exhibits at least one thermotropic phase transition below the clearing point to the isotropic liquid, but no definitive evidence of liquid crystallinity has been found by differential scanning calorimetry, optical microscopy, or X-ray diffraction.

ISSN:0267-8292    

DOI:10.1080/02678299308026345

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0267-8292    

DOI:10.1080/02678299308026333

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor