Tailoring supramolecular nanotubes by bile salt based surfactant mixtures.
An approach for tailoring self-assembled tubular structures is described. By controlling the relative composition of a two-component surfactant mixture comprising the natural bile salt lithocholate and its bolamphiphilic derivative, it was possible to finely tune the nanotube cross-section of the mixed tubular aggregates that self-associated spontaneously in aqueous solution at pH 12. The diameter was found to vary up to 50% when the stoichiometric ratio of the two bile salts was changed. The tuning of supramolecular nanochannels with such remarkable precision is of significant interest for technological applications of these materials.
Dipartimento di Chimica, Sapienza Università di Roma, P.le Aldo Moro 5, 00185 Rome (Italy) luciano.
Marta
M
Gubitosi
Dipartimento di Chimica, Sapienza Università di Roma, P.le Aldo Moro 5, 00185 Rome (Italy) luciano.
Leana
L
Travaglini
Dipartimento di Chimica, Sapienza Università di Roma, P.le Aldo Moro 5, 00185 Rome (Italy) luciano.
Maria Chiara
MC
di Gregorio
Dipartimento di Chimica, Sapienza Università di Roma, P.le Aldo Moro 5, 00185 Rome (Italy) luciano.
Nicolae V
NV
Pavel
Facultad de Ciencias, Universidad de Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo (Spain).
José
J
Vázquez Tato
Istitute of Complex Systems (ISC)-CNR, UOS Sapienza, P.le Aldo Moro 2, 00185 Rome (Italy).
Simona
S
Sennato
Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, 22100 Lund (Sweden).
Ulf
U
Olsson
Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, 22100 Lund (Sweden).
Karin
K
Schillén
Dipartimento di Chimica, Sapienza Università di Roma, P.le Aldo Moro 5, 00185 Rome (Italy) luciano.. galantini@uniroma1.it.
Luciano
L
Galantini
D001647:Bile Acids and Salts / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D018625:Microscopy, Atomic Force; D043942:Nanotubes / Q000737:chemistry*; D053838:Scattering, Small Angle; D013501:Surface-Active Agents / Q000737:chemistry*; D014961:X-Ray Diffraction
D001647:Bile Acids and Salts; D013501:Surface-Active Agents
bile acids; nanochannels; nanotubes; self-assembly; tailoring