BIS(CHLOROPHYLL)CYCLOPHANES. NEW MODELS OF SPECIAL PAIR CHLOROPHYLL

The synthesis of a series of bis(chlorophyll) cyclophanes was undertaken to study the photochemical and redox properties of chlorophyll special pairs. This paper reports on the first member of this series, bis(chlorophyll) cyclophane 8. Results support the earlier proposal that special pair geometries exist which account for the redox and spin delocalization properties of chlorophyll special pairs in vivo, yet do not give rise to unusually red-shifted optical spectra. (DLC)