Figure 1. Surface pressure (a) and surface potential (b) isotherms vs. area per molecule in the monolayer of the dithia-crown-ether derivative (K29) on the bidistilled water surface at the different spreading volume: 5μl (1), 25μl (2), 40μl (3).

From

Monolayers of Benzodithia-Crown-Ether Derivative: Surface Active and Photosensitive Properties

S. Zaitsev, D. Solovyeva, I. Zaitsev, M. Tsarkova

Nanoscience and Nanotechnology Research. 2013, 1(1), 9-12 doi:10.12691/nnr-1-1-3