The effect on E-stilbazoles second order NLO response by axial interaction with M(II) 5,10,15,20-tetraphenyl porphyrinates (MÂ =Â Zn, Ru, Os); a new crystalline packing with very large holes

The second order NLO properties of a series of Zn(II), Ru(II) and Os(II) tetraphenylphorphyrins substituted in the axial position with push-pull E-stilbazoles have been studied using the EFISH technique, working at non resonant 1.907 μm wavelength, and by the solvatochromic method, not affected by fluorescence or resonance interferences.