Enhanced intersystem crossing due to long-range exchange interaction in copper(II) porphyrin-free base porphyrin dimers: HOMO and spacer dependence

- We found a parallel relationship between the two correlation lines of ln Δkisc vs. number of bonds.
- Effects of HOMO of the terminal chromophore appear as the intercept of the correlation lines.
- Difference of HOMO of the terminal porphyrin does not affect the interaction within the bridge part.
- An expression involving both HOMO and spacer dependence for EISC rate was derived.