Abstract
N
-(3-Dihydrocholesteryloxycarbonylmethyl)-(
1
) and
N
-(3-cholesteryloxycarbonylmethyl)-1-aza-4,7,10,13-tetraoxa-cyclopentadecane (
2
) aggregate in water to from the first examples of niosomes based on amphiphiles having an uncomplexed crown ether residue as the head group.