Pseudo-enantiomeric chiral components and formation of the helical micro- and nanostructures in charge-transfer complexes

Abstract

Helical organic micro- and nanostructures are formed by a charge-transfer complex, cinchonidine-TCNQ. These unusual forms result from the chirality, the steric structure and specific interactions of cinchonidine molecules. These materials are semiconductors (10−4 S cm−1), with the typical absorption spectra in IR and UV-vis, but also have a characteristic of CD spectrum. Surprisingly, conductive micro and nano helices are not formed in pseudo-enantiomeric cinchonine, i.e. the complex of cinchonine and TCNQ.

Keywords

• conductive ct complexes
• helical micro- and nanostructures
• tcnq