Functional Nanohybrid Materials from Photosynthetic Reaction Center Proteins

Figure 1

The connection between the molecular, energetic, and spectral characteristics of the chlorophyll and bacteriochlorophyll molecules. The molecular orbital (MO) levels of chlorophylls (Chl) and bacteriochlorophylls (BChl) (left). The S₀ → S₁ and S₀ → S_n (Soret) transitions are indicated by solid and dotted lines, respectively. The absorption spectra of chlorophyll-a and bacteriochlorophyll-a corresponding to the S₀ → S₁ and S₀ → S_n transitions as indicated by the characteristic lines (middle). The molecular structures of chlorophyll-a and bacteriochlorophyll-a molecules (right). The conjugated double bond systems are highlighted.