Metastable oxidation states of tetrathiafulvalenes on the surface of liposomesElectronic supplementary information (ESI) available: Analytical data for 1 including NMR, MS, UV-vis spectra and CV as well as additional DLS and UV-vis data. See DOI: 10.1039/c4tb01627k

• Main Authors: Kauscher, U, Bartels, K, Schrader, I, Azov, V. A, Ravoo, B. J
• Format: Journal Article
• Language: English
• Published: 17.12.2014
• ISSN: 2050-750X; 2050-7518
• DOI: 10.1039/c4tb01627k

Redox-active liposomes are prepared by the incorporation of tetrathiafulvalene-cholesterol conjugate 1 in phospholipid vesicles. The oxidation of tetrathiafulvalene (TTF) on the surface of the liposomes in aqueous solution is monitored by UV-vis spectroscopy. It is shown that metastable (TTF + &z.rad;) 2 π-dimers of the mono-oxidized cation radical are formed due to the high local concentration of TTF groups in the lipid membrane. These dimers can be further stabilized by the addition of cucurbit[8]uril or by reduction of the lateral mobility in the membrane by variation of the lipid composition. Redox-active liposomes are prepared by the incorporation of tetrathiafulvalene-cholesterol conjugate 1 in phospholipid vesicles.