Collapse and Self-Reconstruction of Mesoscopic Architectures of Supramolecular J Aggregates in Solution: From Strings to Tubular Rods

Author(s): Hiroshi Yao, Chris A. Michaels, Stephan J. Stranick, Takeshi Isohashi, Keisaku Kimura

Journal Name: Letters in Organic Chemistry

Volume 1 , Issue 3 , 2004

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This Letter reports the collapse and subsequent self-reassembly of mesoscopic architectures of supramolecular J aggregates in solution. Ultrasonication of the string-like 5,5-dichloro-3,3-disulfopropyl thiacyanine (TC) J aggregates caused fragmentation (collapse) of the initial morphology, followed by a prompt self-reconstruction into mesoscopic rod-like architectures. Fluorescence microscopy, polarized light microscopy, atomic force microscopy and near-field scanning optical microscopy revealed that the apparent rod-like morphology was a tubular architecture with a monomolecular wall (single-wall) and open ends.

Keywords: j aggregates, tubular rod, self-reconstruction, mesoscopic structure, atomic force microscopy (afm), near-field scanning optical microscopy (nsom)

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Article Details

Year: 2004
Page: [280 - 287]
Pages: 8
DOI: 10.2174/1570178043401180
Price: $65

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