Liquid crystalline model compounds based on 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA)

Autor:	Hans-Werner Schmidt, Petra Eiselt, Steffen Denzinger
Rok vydání:	1995
Předmět:	Materials science Liquid crystalline Mesogen General Chemistry Condensed Matter Physics BPDA Crystallography Homologous series chemistry.chemical_compound chemistry Liquid crystal Phase (matter) Organic chemistry Molecule General Materials Science
Zdroj:	Liquid Crystals. 18:257-262
ISSN:	1366-5855 0267-8292
DOI:	10.1080/02678299508036621
Popis:	3,3′,4,4′-Biphenyltetracarboxylic dianhydride (BPDA) was investigated as the central core unit in mesogenic molecules. Of particular interest was whether the BPDA unit could be self-constrained into a trans-conformation, and thus organize into a liquid crystalline phase. Two homologous series of symmetrical substituted model compounds, 3,3′,4,4′-biphenyltetracarboxy-N-N'-bis-(4-n- alkylphenyl) diimides and 3,3′,4,4′-biphenyltetracarboxy-N-N'-bis-(4-n- alkoxyphenyl)diimides were synthesized. For both series high temperature smectic A phases were observed. To our knowledge these are the first examples of liquid crystalline behaviour observed with BPDA as the mesogenic core.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3241f403ed09a79e65fe3952bf193648 https://doi.org/10.1080/02678299508036621 Zobrazit plný text záznamu