Figure 4. Absorption spectra of K29 monolayer on the water surface (1) and Hg(ClO4)2 aqueous solution (10-5 M) (2) at the 10mN/m surface pressure.

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