Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 12, Issue 24, Pages 6298-6314Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200501195
Keywords
dendrimers; electron-donor groups; liquid crystals; self-assembly
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Semifluorinated first-generation self-assembling dendrons attached via a flexible spacer to electron-donor molecules induce pi-stacking of the donors in the center of a supramolecular helical pyramidal column. helical pyramidal columns self-organize in various columnar liquid crystal phases that mediate self-processing of large single crystal liquid crystal domains of columns and self-repair their intracolumnar structural defects. In addition, all supramolecular columns exhibit a columnar phase at lower temperatures that maintains the helical pyramidal columnar supramolecular structure and displays higher intracolumnar order than that in the liquid crystals phases. The results described here demonstrate the universality of this concept, the power of the fluorous phase or the fluorophobic effect in selfassembly and the unexpected generality of pyramidal liquid crystals.
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