ORGN 714 |
| Supramolecular electronics have attracted a significant attention in a broad range of applications since the self-assembly of π-conjugated organic materials can form well-defined and highly ordered nanostructures with the controlled charge/energy transfer property as well as unique fluorescence modulation. Previously, we reported a highly fluorescent organogel from trifluoromethyl-based cyanostilbene derivative (CN-TFMBE), which originated from supplementary intermolecular interaction induced by peripheral four CF3 units and strong π-π interaction by rigid aromatics. (JACS, 2004, 126, 10232) In this work, we report a novel class of CN-TFMBE analogues with pyridine moiety as good binding site for metal coordination. Its binding with silver triggered a prompt formation of gel from initial sol state, accompanied by a remarkably enhanced and red-shifted fluorescence. This is probably due to the cooperative molecular interaction of the two bound ligands to induce planar conformation and J-type aggregation. Consequently, turn-on fluorescent organogel assisted by self-assembly of silver-complex was demonstrated successfully. |
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Asymmetric Reactions, Combinatorial Chemistry, Molecular Recognition and Self-Assembly, Proteins, Peptides, Amino Acids and Enzyme Inhibitors
8:00 PM-10:00 PM, Wednesday, March 28, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Organic Chemistry |