Figure 1
From: Prebiotic-chemistry inspired polymer coatings for biomedical and material science applications
Polymers inspired by prebiotic chemistry and surface characterization. (a) Aminomalononitrile (AMN)-based coatings can be formed in a simple one-step procedure. (b) These coatings are formed by neutralization of the AMN toluene sulfonic acid salt in aqueous solutions. (c) Thickness of AMN-based coatings as a function of deposition time determined by atomic force microscopy (AFM) section analysis on mica substrates (n=9, error bars represent s.d.; lines are drawn to guide the eye). (d, e) These coatings can be deposited on a broad range of materials, reflected for example by the average water contact angles and the average N/C elemental ratios obtained from XPS spectra before and after coating for 24 h. (f) AMN coatings display a distinctive brown color (example deposited for 24 h in individual wells of a 96-well plate). N/C, nitrogen-to-carbon ratio; XPS, X-ray photoelectron spectroscopy.
