A series of free base meso-tetraarylporphyrins functionalized with substituents containing one, two, and four cyclooctatetraene (COT) moieties have been obtained characterized by spectral photophysical studies. Three COT-free porphyrins served as reference compounds. COT is a triplet quencher, well-known to enhance the photostability several, but not all, fluorophores. In case porphyrins, subst...

Fluorescence-based imaging techniques critically rely on bright and photostable probes for precise detection of biological molecules. Recently, a new class of multichromophoric probes based on fluorescent dendrimer nanoconjugates (FDNs) was developed for single molecule fluorescence microscopy (SMFM). FDNs are generated by covalent conjugation of multiple fluorescent dyes onto macromolecular po...