Functionalization of bolalipid nanofibers by silicification and subsequent one-dimensional fixation of gold nanoparticles.
In the present work, we describe the successful stabilization of bolalipid nanofibers by sol-gel condensation (silicification) of tetraethoxysilane (TEOS) or 3-mercaptopropyltriethoxysilane (MP-TEOS), respectively, onto the nanofibers. 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, (13)C, and (31)P NMR spectroscopy. Finally, the novel silicified bolalipid nanofibers were used as templates for the fixation of 5 and 2 nm AuNPs, respectively, resulting in one of the rare examples of one-dimensional AuNP arrangements in aqueous suspension.
Institute of Chemistry, Physical Chemistry, Martin-Luther-University Halle-Wittenberg, Halle Saale, Germany. simon.drescher@pharmazie.uni-halle.de
Simon
S
Drescher
Günter
G
Hempel
Wolfgang H
WH
Binder
Bodo
B
Dobner
Alfred
A
Blume
Annette
A
Meister
D002152:Calorimetry, Differential Scanning; D006046:Gold / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D057139:Nanofibers / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry*; D044367:Phase Transition; D012821:Silanes / Q000737:chemistry*; D013499:Surface Properties; D014867:Water / Q000737:chemistry
D008055:Lipids; D009943:Organophosphorus Compounds; D012821:Silanes; D014867:Water; C040733:tetraethoxysilane; D006046:Gold