A New Class of Luminescent Polypyridine Complexes of Rhenium(I) Containing <i>cis</i>-Carbonyl Ligands
作者:Erick Schutte、Jeffrey B. Helms、Stephen M. Woessner、John Bowen、B. Patrick Sullivan
DOI:10.1021/ic971199s
日期:1998.6.1
A new class of long-lived luminescent complexes of the type cis-Re-I(CO)(2)(N-N)(P-P)(+) (where N-N is a chelate polypyridine ligand and P-P is a chelate phosphine) has been prepared. The new Re excited states are of extraordinary stability and exhibit redshifted spectral responses relative to the well-studied fac-Re(bpy)(CO)(3)L(+70) series (L is a variety of neutral and anionic ligands). Of primary interest are their extremely long lifetimes in CH2Cl2 solution, which could be a consequence of an energy gap law different from that of the tricarbonyl complexes.