Photophysical, Photochemical, and BQ Quenching Properties of Zinc Phthalocyanines with Fused or Interrupted Extended Conjugation

Scheme 1

Synthesis of zinc complexes. 1a–1d and 2a–2d ((i) Pd/C, hydrazine hydrate, dioxane, and reflux; (ii) 4-(dimethylamino) cinnamaldehyde, THF, and reflux; (iii) CH₃I, CHCl₃, and reflux) [22, 23].