Synthesis of liquid-crystalline polyesters with (η4-cyclobutadiene)cobalt moieties in the main chain

Macromolecules

Volumn 30, Issue 4, 1997, Pages 1222-1224

  Rozhanskii, Igor L ^a,b   Tomita, Ikuyoshi ^a   Endo, Takeshi ^a  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

^b Japan Synthetic Rubber Co Ltd   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

COBALT COMPOUNDS; GEL PERMEATION CHROMATOGRAPHY; INTERFACES (MATERIALS); LIQUID CRYSTAL POLYMERS; METALLORGANIC POLYMERS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; POLYCONDENSATION; POLYMERIZATION; SOLUBILITY; SYNTHESIS (CHEMICAL); THERMOTROPIC LIQUID CRYSTALS; THIN FILMS;

AROMATIC DIACYL DICHLORIDES; ORGANOCOBALT DIOLS; PHENYLETHYNYLPHENOLS; RIGID ROD AROMATIC POLYESTERS;

POLYESTERS;

EID: 0031076698     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma9609893     Document Type: Article

References (21)

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17. 1H NMR: Figure 1. See Supporting Information for more details.
18. -1): 1736 (COO), 1605, 1508 (C=C), 1260 (=0-0-)), which was virtually identical to the spectrum of the soluble isomeric Co-Biph-cis, obtained from 5-cis.
19. g's, not surviving in the fluid state.
20. Co10-Phen is an exception, since it did not exhibit the distinct second melting endotherm. However, its isotropization proceeded more smoothly and in the broader temperature range (150-175 °C), compared with Co14-Phen.
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