TY - JOUR
T1 - Highly ordered side-chain liquid-crystalline polymers from maleic anhydride and swallow-tailed 1-alkenes having two mesogens
AU - Nieuwhof, R.P.
AU - Marcelis, A.T.M.
AU - Sudhölter, E.J.R.
AU - Picken, S.J.
AU - van Puijenbroek, R.R.
PY - 2000
Y1 - 2000
N2 - Side-chain liquid-crystalline polymers (SCLCPs) were synthesized from the alternating copolymerization of maleic anhydride with swallow-tailed 1-alkenes having two mesogens. In contrast to similar polymers from 1-alkenes with one mesogen per repeating unit, these novel polymers exhibited lower isotropization temperatures and higher glass transition temperatures. The degree of order in the mesophase strongly increased: these SCLCPs exhibited a highly ordered smectic H phase. The polymers with a hexyl spacer between the malonate junction and the mesogen exhibited a uniaxially limited-correlation-length smectic E mesophase (SEu) which has, according to our knowledge, not been observed before. The highest transition temperatures and entropy changes were observed for polymers with completely interdigitated side chains.
AB - Side-chain liquid-crystalline polymers (SCLCPs) were synthesized from the alternating copolymerization of maleic anhydride with swallow-tailed 1-alkenes having two mesogens. In contrast to similar polymers from 1-alkenes with one mesogen per repeating unit, these novel polymers exhibited lower isotropization temperatures and higher glass transition temperatures. The degree of order in the mesophase strongly increased: these SCLCPs exhibited a highly ordered smectic H phase. The polymers with a hexyl spacer between the malonate junction and the mesogen exhibited a uniaxially limited-correlation-length smectic E mesophase (SEu) which has, according to our knowledge, not been observed before. The highest transition temperatures and entropy changes were observed for polymers with completely interdigitated side chains.
U2 - 10.1002/1521-3935(20001101)201:17<2394::AID-MACP2394>3.0.CO;2-0
DO - 10.1002/1521-3935(20001101)201:17<2394::AID-MACP2394>3.0.CO;2-0
M3 - Article
SN - 1022-1352
VL - 201
SP - 2394
EP - 2400
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
IS - 17
ER -