Nevertheless, this sequence does not represent a case of thermodynamic equilibrium. The K O and K T (s) phases in PEFBP(n = 9 and 11)s and the S A phase in PEBFP(n = 8 and 10)s are characteristics of the evenodd effect observed in this series of combined LC polyesters. The number of methylene units
โฆ LIBER โฆ
Rigid rod polymers with regularly spaced silicon-centered phthalocyanine units in the backbone
โ Scribed by Ulrich Lauter; Margit Schulze; Gerhard Wegner
- Book ID
- 102490772
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 332 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
โฆ Synopsis
We describe the synthesis of new rigid rod polymers possessing a backbone of silicon phthalocyanine units and stiff 4,4'-dioxybiphenyl or 2,6-dioxynaphthalene spacers. These modified phthalocyaninato-polysiloxane derivatives are characterised by mass, absorption and ' k -C P -MAS spectroscopies, differential scanning calorimetry and X-ray powder diffractometry. UV/VIS spectra show only slight differences to the corresponding phthalocyanine monomers, which indicates the absence of excited state interactions between the chromophores within the polymer backbone.
๐ SIMILAR VOLUMES
Phase structures, transition behavior an
โ
Jason J. Ge; Paul S. Honigfort; Rong-Ming Ho; Shy-Yeu Wang; Frank W. Harris; Ste
๐
Article
๐
1999
๐
John Wiley and Sons
๐
English
โ 217 KB
๐ 2 views