This work describes the synthesis and characterisation by electronic absorption
spectroscopy, cyclic voltammetry and by a solvatochromic investigation of meso‐
tetraphenylporphyrins and their ZnII complexes substituted at the β pyrrolic position by a
pseudo‐linear, π‐delocalised organic linker carrying either an electron‐withdrawing (pull) or
electron‐donating (push) group. The second‐order NLO response of these push‐pull
porphyrinic chromophores has been investigated by the EFISH technique working with a …

“The preparation of the phosphonium salt 16 was carried out, starting from the aldehyde 13,
according to the synthetic scheme reported in a preliminary communication by Bonfantini
and Officer in 1993.[24] However the detailed experimental procedure was never published,
hence a careful description of the synthesis and characterisation of intermediate porphyrins
14, 15 and 16 is given in the Experimental Section.” Recently, Prof. DL Officer informed us
that the detailed experimental procedure for the synthesis of compound 16 was published in …