Related Experiment Video
Updated: May 10, 2026

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers
Published on: September 19, 2017
Quadruple π stack of two perylene bisimide tweezers: a bimolecular complex with kinetic stability
Changzhun Shao1, Matthias Stolte, Frank Würthner
1Universität Würzburg, Institut für Organische Chemie and Center for Nanosystems Chemistry, Am Hubland, 97074 Würzburg, Germany.
Abstract:
Self-assembly: A tweezer-type perylene bisimide (PBI) dyad self-assembles into a defined bimolecular complex composed of a quadruple PBI π stack with remarkable kinetic stability, which is unprecedented for π-stacked dye aggregates (see picture). These persistent supramolecular species are of considerable interest for the elucidation of functional properties of dye aggregates.
Related Concept Videos
Hybridization of Atomic Orbitals II
Radical Reactivity: Steric Effects
Along with electronic factors, steric factors also account...
¹H NMR: Complex Splitting
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.

