Stable synthetic bilayer membranes with
Cu2+-coordinated headgroups can be formed by the series
of
single-chain amphiphiles,
C
n
H2
n
+1NHC2H4NH2
(n = 8, 12, 14, 16, 18), in dilute aqueous
Cu(NO3)2. The
novel structural features of the membrane system have been investigated
thoroughly via X-ray diffraction
(XRD), Fourier transform Raman (FT-Raman) and infrared (FT-IR), and
electronic reflectance spectroscopies.
Two bilayer packing fashions were conclusively proposed: the
tail-to-tail model for the n = 8 amphiphiles
and the interdigitation one for the n > 8 amphiphiles.
It was revealed at the molecular level that the
balance and matching between the headgroup coordination and the
hydrophobic assembly of the alkyl
chains endow the complexed bilayer membranes with structural
varieties.
The CuN4 headgroups and the aliphatic tails in Cu*+-complexed bilayer membranes exhibit two-dimensional ordered orientations which can be classified into two types with different structural features.
The organized structure of Cu 2+ -coordinated bilayer membranes formed by monoalkyl derivatives of ethylenediamine can easily be modulated by varying the counter ions, and their physical properties change correspondingly.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.