Spectroscopic Probing of the Dynamic Self-Assembly of an Amphiphilic Naphthalene Diimide Exhibiting Reversible Vapochromism

Authors

  • Mohit Kumar,

    1. Supramolecular Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064 (India), Fax: (+91) 80-2208-2760
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  • Dr. Subi J. George

    Corresponding author
    1. Supramolecular Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064 (India), Fax: (+91) 80-2208-2760
    • Supramolecular Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064 (India), Fax: (+91) 80-2208-2760
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Abstract

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Fluorescent nose: The reversible “turn-on” vapochromism of a self-assembled amphiphilic naphthalene diimide derivative in solution and film states is presented. This property was found to be due to solvent–vapor-responsive, dynamic reorganization in molecular packing in going from J-type aggregates (blue fluorescent; see left-hand side of scheme) to preassociated H-type excimer states, with enhanced green fluorescence.

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