Liquid-Crystalline Crown Ether: Forming Columnar Mesophases by Molecular Recognition

Angewandte Chemie (International Edition in English)

Volumn 36, Issue 10, 1997, Pages 1119-1121

  Schröter, Jörg Andreas ^a   Tschierske, Carsten ^a   Wittenberg, Michael ^b   Wendorff, Joachim Heinz ^b  

^a Inst for Analyt and Environ Chem   (Germany)

^b PHILIPPS UNIVERSITY MARBURG   (Germany)

Author keywords

Crown compounds; Liquid crystals; Mesophases; Molecular recognition; Supramolecular chemistry

Indexed keywords

EID: 0344176929     PISSN: 05700833     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.199711191     Document Type: Article

References (28)

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21. +]), 586(13), 569(8), 442(5), 429(13).
22. These penetration experiments cannot give precise data concerning the water concentration. Related open-chain compounds can take up to 10 molequiv of water: J. A. Schröter, C. Tschierske, M. Wittenberg, J. H. Wendorff, unpublished results.
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25. -.
26. -.
27. A phase of related 4,4″-didecyloxy-p-terphenyl derivatives is 3.3 nm [11].
28. The layered organization of the terphenyl cores can tolerate rather large polar lateral substituents [11]. Therefore the crossing of the lateral substituents over the terphenyl units in the periphery should be possible. Furthermore, we have recently found columnar mesophases for facial amphiphiles in which lateral diol groups are connected through polyether chains to the rigid cores. However, columnar mesophases can only be found if the lateral hydrophilic group exceeds a certain length [12]. This means that a certain polarity and also a certain length of the lateral groups are important prerequisites for the formation of these ribbon phases.