Synthesis and multilayer assembly of multiporphyrin arrays at the water-chloroform interface

Publisher Website
Google Scholar
Abstract
A water-chloroform interface was developed for the synthesis and assembly of the cadmium-mediated multiporphyrin arrays. With the use of a vertical dipping method, multilayers of the multiporphyrin can be deposited onto hydrophobic substrate surfaces. An in situ absorbance measurement at the water-porphyrin chloroform interface revealed a blue shift for the porphyrin Soret band after the addition of CdCl 2 into the water phase. The transferred multilayers showed a broad Soret band from 430 to 442 nm, which is ascribed to monomer-like porphyrin arrangement in the planar layer and aggregates in the interlayer. The orientation angle of porphyrin macrocycles is about 30°. The porphyrin emission properties in the present multilayers are compared to those in the monomer and aggregate prepared from the air-water/ CdCl 2 subphase surfaces.