Directed self-assembly of dipeptides to form ultrathin hydrogel membranes

Reference:

Johnson, E. K., Adams, D. J. and Cameron, P. J., 2010. Directed self-assembly of dipeptides to form ultrathin hydrogel membranes. Journal of the American Chemical Society, 132 (14), pp. 5130-5136.

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Official URL:

http://dx.doi.org/10.1021/ja909579p

Abstract

The dipeptide amphiphile Fmoc-Leu-Gly-OH has been induced to self-assemble into thin surface-supported hydrogel gel films and gap-spanning hydrogel membranes. The thickness can be closely controlled, giving films/membranes from tens of nanometers to millimeters thick. SEM and TEM have confirmed that the dipeptides self-assemble to form fibers, with the membranes resembling a dense "mat" of entangled fibers. The films and membranes were stable once formed. The films could be reversibly dried and collapsed, then reswollen to regain the gel structure.

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