Selective synthesis of clamshell-type bis-phthalocyanine bearing tetrachlorocyclotriphosphazene intramolecular bridge

The selective synthesis of clamshell-type bis-phthalocyanine was performed using cyclotriphosphazene as a peripheral spacer. The spectral characteristics of the target dye are similar to those of most H-dimers, and the reaction can be considered conditionally selective with respect to the cis-isomer