Interplanar interactions were analysed for metal bridged phthalocyanine dimers, [NBu4][M(III)Pc2](M = Y, Yb and Lu), by using zero field splitting (ZFS) parameters in the Tj states. The observed ZFS D and a triplet lifetime decreased remarkably due to dimerization. From a comparison of D between the monomer and the dimer the interplanar interactions are divided into two types: Exciton and charge resonance. It is found that nearly 50% of the charge resonance contribution (b2) is involved in the T1 state of LuPc‒2. The correlations between b2, the triplet lifetime and the ionic radius of the central metal are discussed in terms of the charge resonance interaction.
ASJC Scopus subject areas
- Molecular Biology
- Condensed Matter Physics
- Physical and Theoretical Chemistry