Redox and optically active carbohelicene layers prepared by potentiodynamic polymerization.

0522978 - ÚCHP 2021 RIV NL eng J - Journal Article
Hrbáč, J. - Pavelka, V. - Crassous, J. - Žádný, Jaroslav - Fekete, Ladislav - Pokorný, Jan - Vanýsek, P. - Storch, Jan - Vacek, J.
Redox and optically active carbohelicene layers prepared by potentiodynamic polymerization.
Electrochemistry Communications. Roč. 113, April 20 (2020), č. článku 106689. ISSN 1388-2481. E-ISSN 1873-1902
R&D Projects: GA MŠMT(CZ) LO1409; GA MŠMT(CZ) LM2015088; GA ČR GA16-12757S
Institutional support: RVO:67985858 ; RVO:68378271
Keywords : carbohelicene * hexahelicene * voltammetry
OECD category: Materials engineering; Physical chemistry (FZU-D)
Impact factor: 4.724, year: 2020
Method of publishing: Open access
https://www.sciencedirect.com/science/article/pii/S1388248120300400?via%3Dihub

This short paper describes the preparation of thin layers based on carbohelicenes, which are inherently chiralpolyaromatics existing in the enantiomeric forms P and M. Specifically, [5]-, [6]- and [7]helicene were subjected to redox cycling between −1.5 and 1.5 V vs. ferrocene/ferrocenium at a scan rate of 10 V/s. This way, enantiopure layers exhibiting redox activity were formed on the surfaces of the glassy carbon and ITO electrodes under anoxic and non-aqueous conditions. The properties of the prepared polymer layers were investigated using electrochemistry with Fe/Ru redox probes, circular dischroism, AFM, impedance measurement and Raman spectroscopy. With [6]helicene, the suggested electropolymerization procedure thus represents a proof-of-concept for the preparation of chiral carbonaceous surfaces.
Permanent Link: http://hdl.handle.net/11104/0307387