A molecular-clip-based approach to cofacial zinc–porphyrin complexes

N‐Substituted Acridinium as a Multi‐Responsive Recognition Unit in Supramolecular Chemistry

“… a–c) Examples of some bis‐porphyrin receptors interacting with protonated acridines ( AcH + ) through π‐donor/π‐acceptor interactions [38c–e] . Reproduced from reference [38c–e] with permission from American Chemical Society, Wiley‐VCH and Elsevier.…”

“…Noteworthy, bis-porphyrin receptors interacting through πdonor/π-acceptor interactions with protonated acridine derivatives have been prepared. [38] As an example, large binding constants were determined on account of the extended πsystems of the receptors 28-30 (Scheme 9). [38c-e]…”

Porphyrin tweezer receptors: Binding studies, conformational properties and applications

“…The binding studies were performed using a combination of UV-vis and 1 H NMR spectroscopy titration experiments [60]. The reported association constant value for the 1:1 complex formed between tweezers T16 and the acridinium cation is K ass (26T16) = …”

“…Some years later, Ko et al synthesized porphyrin tweezer T16 with a slightly different rigid spacer. This bisporphyrin was also tested in the coordination of guest 17 and a few electron deficient aromatic compounds(Figure 31b)[60]. Interestingly, the association constant value determined for the 1:1 complex of T16 and 17, in chloroform solution at 298 K, was K ass (17T16) = 1.1 × 10 8 M -1 .…”

Preparation and Enantioselectivity Binding Studies of a New Chiral Cobalt(II)porphyrin‐Tröger's Base Conjugate

“…As a different family of efficient bidentate receptors are regularly reported, bis(metalloporphyrin) derivatives, which utilize metalloporphyrins for their high binding abilities and high absorbance in the visible region. [5][6][7][8][9][10][11][12][13][14][15][16] Thus, it is expected that metalloporphyrin-Tröger's base conjugates would be effective enantioselective receptors, since they join the best properties from both structural motives.…”