1. [Hg3(m-C6F4)3]. Naphthalene p-acid/p-base adduct
3.3 Å
p-base
p-acid
p-acid/p-base adduct

2. Average vibronic spacing: 1434 ± 80 cm-1
Luminescence spectra of naphtahlene.[Hg3(m-C6F4)3] at ambient temperature, resulting in 100% phosphorescence!
CONTROL: Emission spectrum of solid napthalene without the mercury trimer. Emission is due to monomer fluorescence.
Average vibronic spacing:
1434 ± 80 cm-1

3. [Hg3(m-C6F4)3].Pyrene adduct
p-base
p-acid
p-acid/p-base adduct

4. Emission spectra of pyrene.[Hg3(m-C6F4)3]
CONTROL: Emission spectrum of solid pyrene
Science here has two important technological implications on the EL device industry:
Phosphorescence enhancement (100%)
Unlike naphthalene, solid pyrene gives excimer not monomer emission. Excimer emissions are not desired for organic fluorophores in EL applications. Solid-state interaction of pyrene with Hg3 units (see X-ray data) prevents pyrene from association.

5. Luminescence spectra of p-acid/p-base adducts