In this project, we plan to develop new oligopyrrole chromophores by means of the recently introduced modular strategy based on donor-acceptor pyrrole building blocks (lead papers: J. Am. Chem. It’s a SOC. 2016, 138, 11390; I'm Angew. I'm Chem. INT, Ed. 2016, 55, 14658-14662). The synthesis of new building blocks will be pursued, notably low-bandgap systems with extended pi conjugation. By combining different building blocks and substitution patterns, we want to create new systems based on porphyrin, hexapyrrolohexaazacoronene, hexapyrrolylbenzene, and other oligopyrrole motifs. The new systems will be explored for their optical and electronic properties, such as (a) excited-state symmetry breaking, (b) energy and electron transfer in multichromophore assemblies, (c) formation of Electroactive ladder polymers, and (d) triplet generation for use in antimicrobial photodynamic therapy.