Abstract We have investigated the photostability, photosensitizing ability, and bioimaging applicability of some heteroacene containing amino terephthalonitriles. The fluorophores contain benzopiperazine, benzomorpholine, and quinoxaline heteroacenes. Benzomorpholine derivatives showed excellent photostability and dual‐channel emission, demonstrating potential as cytoplasmic stains for sustained live‐cell imaging, while quinoxaline analogues emerged as promising photosensitizers.
Sinha et al. (2025) studied this question.