630765-09-2Relevant academic research and scientific papers
Photoresponsive supramolecular systems: Self-assembly of azodibenzoic acid linear tapes and cyclic tetramers
Rakotondradany, Felaniaina,Whitehead,Lebuis, Anne-Marie,Sleiman, Hanadi F.
, p. 4771 - 4780 (2007/10/03)
A new strategy to effect photoinduced control over molecular self-assembly is reported. This strategy uses the reversible trans-cis photoisomerization of a novel azobenzene system, where the trans- and cis-forms self-assemble into dramatically different higher-order structures. The trans-azobenzene form of this molecule associates into infinite hydrogen-bonded linear tapes, while the cis-azobenzene form undergoes hydrogen-bonded self-assembly into cyclic tetramers. This results in a second level of association, where the cis-hydrogen-bonded supramolecular cycles ultimately form long, rod-like aggregates through stacking interactions.
