Nanostructured Stable Floating М-Mono- and Bilayers and Langmuir-Schaefer Films of 5,10,15-Triphenylcorrole

Abstract

5,10,15-Triphenylcorrole is a tetrapyrrolic macrocyclic compound similar to B12 vitamin, with pyrrole-pyrrole direct coupling and a carbon skeleton. Stable floating nanostructured mono-, bi-, and tetralayers of the compound were prepared. The main characteristics of the structure, properties, and formation conditions of the layers were determined. A model of monolayers consisting of nanoaggregates was built. The triphenylcorrole produces nanostructured face-on and edge-on monolayers. Stable bilayers and tetralayers form at high values of the initial surface coverage, featuring a constant degree of surface coverage by 3D nanoaggregates at the initial point of the stable state (75%). The layers with bilayered 3D nanostructures demonstrate very high stability. Their size (8 nm) and the number of molecules in them (109) are independent of the initial degree of surface coverage. For the first time, a model of floating bilayers of a macroheterocyclic compound was constructed. Langmuir-Schaeffer films of the corrole were prepared from nanostructured floating polylayers produced on the water surface and then were studied spectrally.