Related Experiment Video
Updated: Jul 17, 2026
![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)
Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Unsymmetrical calix[4]arene bisporphyrin Pacman
Grégory Pognon1, Jennifer A Wytko, Jean Weiss
1CLAC, Institut de Chimie, UMR 7177 CNRS-ULP, BP 1032, 4 rue Blaise Pascal, 67070 Strasbourg, France.
Abstract:
[structure: see text] The synthesis of a Pacman heterobisporphyrin associating an octaethyl porphyrinatozinc (ZnOEP) energy donor and a triaryl porphyrinatozinc (ZntPP) energy acceptor around a calix[4]arene spacer is described. Contrary to previous symmetrical architectures, correlations between the chromophores in the unsymmetrical calixarene bisporphyrin Pacman scaffold can now be observed in ROESY experiments. Independent of the excitation wavelength, only the luminescence of the ZntPP moiety was observed corresponding to quenching of the OEP moiety's emission.
More Related Videos
Related Concept Videos
Frost Circles for Different Conjugated Systems
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group with both...
Hybridization of Atomic Orbitals I
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement
VSEPR Theory and the Effect of Lone Pairs

