Karakterisasi Morfologi Permukaan Lapisan Tipis Porphyrin Alam Hasil Deposisi Spin Coating dengan Atomic Force Mircroscopy Elvira Freditia Fonita, Elly Fatmawati, Defi Sulistiyana, Utari Utari, Budi Purnama

Abstract

Synthesis and fabrication of nanoparticle-based thin layer of natural porphyrin is reported in this paper. Porphyrin solution was synthesized by using a process of natural purification with column chromatography techniques. It was then grown into a thin film an a Cu substrate by spin coating method. Observations with atomic force microscopy confirmed that the thin layer structure is with the composition of islands with dimensions of the order of nano-meters. The lateral dimensions of the thin layer with N = 3 showed the structure of the island of 800 nm which is smaller than the sample of N = 5 is 1200 nm. Moreover, an observation of smaller-scale scan confirmed that the islands which are larger dimension are composed of small islands with a certain bond. Finally, if the one unit of island is a molecule, the islands may interact to form a supra-molecular.