Poly-halogenated aza-bodipy dyes with improved solubility as a versatile synthetic platform for the design of photonic materials

Abstract

The optimization of the solubility in organic solvents of halogenated aza-dipyrromethenes was achieved by substitution of the upper phenyl moieties by branched long alkoxy chains (1f) or by using an OMe–OHex–OMe pattern (1h). These results allowed us to prepare original tetra-halogenated aza-dipyrromethenes that were used as a synthetic platform to access highly functionalized aza-bodipy dyes for various potential applications including PDT, imaging, or nonlinear optics.