Accession Number : ADA291911

Title :   The Synthesis of Liquid Crystalline Phophazenes Containing Chiral Mesogens

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY

Personal Author(s) : Allcock, Harry R. ; Klingenberg, Eric H.

PDF Url : ADA291911

Report Date : 06 MAR 1995

Pagination or Media Count : 41

Abstract : Phosphazene cyclic trimers and high polymers containing biphenyl side groups with (S)-2-methyl-l-butoxy as a terminal unit were synthesized. The chiral biphenyl units were linked to the skeletal phosphorus atoms of the small molecule phosphazene cyclic trimers and high polymers through spacer linkages. Single substituent high polymeric poly(organophosphazenes) were synthesized that contained the chiral biphenyl unit linked to the backbone through spacer units. Cosubstituent polymers were also synthesized which contained both the chiral biphenyl derivative linked to the backbone through varying spacer lengths and through non-mesogenic cosubstituents. All the polymers synthesized showed enantiotropic liquid crystallinity. jg

Descriptors :   *POLYMERS, *LIQUID CRYSTALS, *PHOSPHAZENE, SYNTHESIS, MOLECULES, ATOMS, ORGANIC COMPOUNDS, LINKAGES, PHOSPHORUS, SPACERS, BIPHENYL.

Subject Categories : Polymer Chemistry
      Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE