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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
A core-substituted naphthalene diimide-based supramolecular triangle and its self-assembly into nanostructures
Samantha T Aragon1, Edgar U Lopez-Torres2, Franchesca C Tinacba1
1Department of Chemistry and Biochemistry, St. Mary's University, San Antonio, TX, USA. emanandhar1@stmarytx.edu.
None:
A core-substituted naphthalene diimide (1) was self-assembled with (Et3P)2Pt·2TfO into a triangular structure (2) whereas an equilibrium mixture of triangular and dimer or tetramer was obtained with Pd(dppp)·2TfO and Pt(dppp)·2TfO. The triangular structure for 2 was supported theoretically by PM6 calculations and fully characterized by NMR spectroscopy and mass spectrometry. Complex 2, as compared to 1, shows a variable UV-Vis absorption and fluorescence as a function of solvent and is easily reducible during cyclic voltammetry. TEM and AFM imaging showed that 2 further self-assembles into nanostructures.
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