Peripheral Substitution of Tetraphenyl Porphyrins: Fine-Tuning Self-Assembly for Enhanced Electroluminescence.

This study reports the synthesis of two novel zinc porphyrin families bearing four or eight alkoxy chains at their peripheral phenyl rings, with the length of the alkoxy chains ranging from 2, to 6, and to 12 carbon atoms. All zinc porphyrin derivatives were fully characterized with respect to their photophysical and electrochemical features. The zinc porphyrins could be processed into thin films which, depending on the length of the alkoxy chains on the aryl substituents, were found to be either of an ordered or a disordered nature, as it is revealed by spectroscopic and microscopic techniques.

Cunning metal core: efficiency/stability dilemma in metallated porphyrin based light-emitting electrochemical cells.

The syntheses, photophysical/electrochemical characterizations of different metallated porphyrins -i.e., Zn(2+), Pt(2+), Pd(2+), and Sn(4+) porphyrins - as well as their first application in light-emitting electrochemical cells are provided.