Solvent Effect on the Self-Assembled Structure of an Amphiphilic Perylene Diimide Derivative
- 22 May 2008
- journal article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 112 (24), 7196-7202
- https://doi.org/10.1021/jp801413k
Abstract
An amphiphilic electron-deficient (n-type) perylene diimide has been synthesized and characterized. The diimide contains a hydrophobic long chain on one end and a hydrophilic ethoxy chain on the other. The self-assembly of this molecule in polar and nonpolar solvents has been demonstrated by concentration- and temperature-dependent absorption and fluorescence spectroscopies. Analysis of the spectral change for the aggregates shows typical J-aggregates for structures precipitated from polar solvents and H-aggregates for structures precipitated from nonpolar solvents. SEM and TEM micrographs and a suggested packing scheme, compatible with the formation of nanostrips in nonpolar solvents and nanofibers in polar solvents, are presented.Keywords
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