S. Drescher, G. Hempel, W. Binder, B. Dobner, A. Blume, A. Meister.
Functionalization of Bolalipid Nanofibers by Silicification and Subsequent One-Dimensional Fixation of Gold Nanoparticles
Langmuir , 28, 11615-11624 (2012).
In the present work we describe the successful stabilization of bolalipid nanofibers by sol-gel
condensation (silicification) of tetraethyl orthosilicate (TEOS) or 3-mercaptopropyl triethyl
orthosilicate (MP-TEOS), respectively. The conditions for an effective and reproducible silicification reaction were determined and the silicification process was pursued by transmission electron microscopy (TEM). The resulting bolalipid-silica composite nanofibers were characterized by means of differential scanning calorimetry (DSC), TEM, 13C, and 31P NMR spectroscopy. Finally, the novel silicified bolalipid nanofibers were used as templates for the fixation of 5-nm and 2-nm AuNPs, respectively, resulting in one of the rare examples of onedimensional AuNP arrangement in aqueous suspension.