The development and possible applications of near-infrared emitting chromophores have garnered considerable interest in the last ten years. These chromophores have a wide variety of applications in solar cells, agriculture, medicine, and industrial settings. We have synthesized a series of symmetrical and asymmetrical tetraarylazadipyrrin chromophores, including some with multi-responsive emission properties accessed via selective excitation wavelengths. These molecules rely on three factors to provide multifunctional emission properties, including pre-orientation, rigidification, and electronic decoupling of chromophore units. In this presentation, we will discuss the synthesis of these molecules proceed through well-established chemistry, including aldol condensations, Michael additions, and heterocyclic ring closures. An essential step for the synthesis of asymmetrical intermediates involves synthesizing 2,4 di-aryl pyrroles. Finally, we will explore the steady-state and time-resolved photophysical properties of these chromophores. The goal of this research is to expand the functionality of tetraarylazadipyrrins and to understand the role large aromatic substituents play in the multi-emissive properties within these chromophores.

Creating multi-responsive symmetric and asymmetric tetraarylazadipyrrin chromophores: Synthesis and characterization

ACS Fall 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.