Nanofibers of 1,3-Diphenyl-2-pyrazoline Induced by Cetyltrimethylammonium Bromide Micelles

A self‐inducing template‐growth approach to the production of nanofibers of 1,3‐diphenyl‐2‐pyrazoline (DP) in the presence of cetyltrimethylammonium bromide (CTAB) in an aqueous phase is discussed (see picture). Not only the surfactant CTAB molecules assume the role of surface‐active colloidal stabilizers; but also the rodlike CTAB micelles, which are induced by DP molecules dissolved in spherical CTAB micelles, further direct the growth of cylindrical DP nanofibers like templates. It is found that the crystal‐packing forces drive the DP molecules to self‐assemble as J‐type aggregates in nanofibers.