522647-62-7Relevant academic research and scientific papers
Self-assembly of semifluorinated minidendrons attached to electron-acceptor groups into pyramidal columns
Percec, Virgil,Aqad, Emad,Peterca, Mihai,Imam, Mohammad R.,Glodde, Martin,Bera, Tusha K.,Miura, Yoshiko,Balagurusamy, Venkatachalapathy S. K.,Ewbank, Paul C.,Wuerthner, Frank,Heiney, Paul A.
, p. 3330 - 3345 (2007)
The synthesis and self-assembly of twelve semifluorinated first-generation dendrons or minidendrons attached to electron-acceptor (n-type) groups generated from various combinations of eight acceptors and three dendrons arc reported. Dendrons attached to small electron-acceptor molecules mediate their self-assembly into π-stacks located in the center of a supramolecular helical pyramidal column with the long axis of the acceptor perpendicular to the long axis of the column. Dendrons attached to large electron-acceptor molecules, such as perylene bisimide, mediate the assembly of their acceptors in an unprecedented arrangement of π-stacks that have the long axis of the acceptors parallel to the long axis of the supramolecular pyramidal column. All supra_molecular columns self-organize into various periodic columnar arrays that exhibit liquid-crystalline phases, crystalline phases, or a liquid-crystalline phase with enhanced intracolumnar order. The present study demonstrates the simplicity and the versatility of the concept of assembly of π-type electroactive groups mediated by semifluorinated dendrons and assesses the scope and limitations of this supramolecular strategy.
