Porphyrin chromophores zinc-containing

The molecular box 14 contains two types of chromophores, zinc-porphyrin and free-base porphyrin. The behaviors of the monomeric models of these units, Zn and Fb, have been summarized in Sect. 4.1. As expected for supramolecular species, the absorption spectrum of the box is a good superposition of those of the molecular components (Fig. 22). The energy level diagram for the molecular box, obtained as a combination of those of the Fb and Zn models (Fig. 23), shows a significant driving force for energy transfer from the Zn-porphyrin to the free base units. 

Another new photorefractive polyimide (Figure 30) with a main-chain zinc porphyrin (/ = 0.005) and a NLO-chromophore side chain (n = 0.995) was reported by Peng et This porphyrin-containing fluorinated polyimide displayed a Tg of 228 °C and maintained thermal stability to... 

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