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Updated: Jun 12, 2026

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
An unexpected solvent effect on the self-assembly of a 1,7-bis-pyridinoyl perylene diimide amphiphile
Shuangping Xu1, Jin Sun, Damei Ke
1Institute of Polymer Materials, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, People's Republic of China.
Abstract:
In this paper, we report that a 1,7-bis-pyridinoyl perylene diimide amphiphile undergoes distinctly different self-assembly in methanol compared to ethanol. This amphiphile forms hollow nanospheres in methanol, whereas in ethanol, it self-assembles into microrose flowers which consist of several soft nanoplates packing like rose petals. Studies of the concentration-dependent absorption spectra confirmed this solvent effect. The most distinct spectral features were the A(0-0)/A(0-1) and A(0-0)/A(S)(0-)(S)(2) values. These spectral changes were explained in terms of the Franck-Condon factors.
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