Discrete multiporphyrin pseudorotaxane assemblies from di- and tetravalent porphyrin building blocks

Mirko Lohse,
Larissa K. S. von Krbek,
Sebastian Radunz,
Suresh Moorthy,
Christoph A. Schalley and
Stefan Hecht

Full Research Paper
Published 12 May 2015

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1. Graphical Abstract
2. Figure 1: Mono-, di-, and tetravalent axles A1, A2 and A4 and mono-, di-, and tetravalent hosts C1, C2 and C4...
  
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3. Scheme 1: Overview of the synthesis of the guests A2 and A4. a) Pyrrole (4), BF₃·Et₂O, DDQ, CHCl₃, rt; b) Zn(...
  
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4. Scheme 2: Synthesis of crown ether hosts C4 and C2: a) K₂CO₃, LiBr, 17, 2-[2-(2-chloroethoxy)ethoxy]ethanol, ...
  
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5. Figure 2: Schematic representation of the host–guests complexes. Top: complexes A2@C1₂, A4@C1₄, A1₂@C2 and A1₄...
  
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6. Figure 3: ¹H NMR (500 MHz, 298 K, CD₂Cl₂, 3 mM) of a) C1 (top), A2@C1₂ (middle) and A2 (bottom); b) C1 (top), ...
  
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7. Figure 4: ¹H NMR (500 MHz, 298 K, CD₂Cl₂, 3 mM) of a) C2 (top), A1₂@C2 (middle) and A1 (bottom) and b) C4 (to...
  
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8. Figure 5: Normalized UV–vis absorption spectra (CH₂Cl₂, 3 μM) of A2, A4, C2 and C4 and their complexes formed...
  
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9. Figure 6: ESI-Q-TOF-MS spectra (CH₂Cl₂, 0.2 µM; left hand side) and respective experimental and calculated is...
  
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10. Figure 7: ¹H NMR (500 MHz, 298 K, CD₂Cl₂, 1 mM) of a) C4 (top), A2₂@C4 (middle) and A2 (bottom); b) C2 (top), ...
  
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11. Figure 8: ¹H NMR (500 MHz, 298 K, CD₂Cl₂, 1 mM) of a) C4 (top), A4@C4 (middle) and A4 (bottom) and b) C2 (top...
  
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12. Figure 9: Normalized UV–vis absorption spectra (CH₂Cl₂, 2 μM) of the guests A2 and A4 (black), the hosts C2 a...
  
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13. Figure 10: ESI-Q-TOF-MS spectra (CH₂Cl₂, 0.2 µM; left hand side) and respective experimental and calculated is...
  
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