Columnar Liquid Crystals from Shape-Persistent Dendritic Molecules

Angewandte Chemie (International Edition in English)

Volumn 36, Issue 15, 1997, Pages 1636-1639

  Pesak, Douglas J ^a   Moore, Jeffrey S ^a  

^a UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

Author keywords

Dendrimers; Liquid crystals; Mesophases; Self organization

Indexed keywords

EID: 0030807341     PISSN: 05700833     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.199716361     Document Type: Article

References (39)

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32. A detailed description of the synthesis is in preparation.
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36. Preliminary microscopy studies under crossed polarizers of the fourth generation (46mer) show an initial birefringent texture. When heated, the sample shows a clearing point; however, upon cooling, no birefringent texture reforms down to room temperature. The original birefringence could be caused by mechanical stress within the sample. Differential scanning calorimetry (DSC) shows no observable phase transitions. X-ray diffraction shows only amorphous characteristics. This behavior should be viewed as preliminary since the MALDI mass spectrum reveals the presence of appreciable amounts of defective dendritic species which may affect possible mesophase behavior.
37. 1 phase.
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39. 2 software packages.