Functional macromolecules are emerging as a desirable class of materials for the advancement of science,technology,and medicine.We focus on the design of these macromolecules by using an organoiron building block that allows the facile and cut-price synthesis of diverse functional,organic and organometallic macromolecules as will be shown in this presentation.Specifically,our presentation focuses on the synthesis and characterization of photoactive,redox active and/or thermally stables polyaromatic ether,thioethers,and amine that have linear,branched,star or dendritic macrostructures.We impart photoactivity on these macromolecules by using chromophores or luminophores such as azo dyes,and porphyrins.We will also present synthetic approaches to access novel macrocycles using the organoiron motif.The incorporation of cavitands,such as calixarenes,and bioactive molecules,such as piperazine and chromene derivatives,into macromolecules by means of the organoiron motif will also be discussed.