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. 2018 Aug 23;51(9):2115–2128. doi: 10.1021/acs.accounts.8b00345

Figure 4.

Figure 4

Capsule building block variations: Porpholactone 4 binds more strongly to ligand template molecules. Zn(II)porphyrins 5 can be substituted on the phenyl rings, leading to different electronic properties. To retain the cooperative binding, meta substituents should be used. Ruthenium porphyrin 6 binds much more strongly to ligand templates. Phthallocyanin 7 generates a larger capsule around ligand templates. Zn(II)salphens (8)24,25 and Zn(II)bisthiosemicarbazonates (9)26 generally bind more strongly to ligand template molecules and are highly modular but much smaller than the Zn(II)TPP.