Covalent post-assembly modification of π-conjugated supramolecular polymers delivers structurally robust light-harvesting nanoscale objects

Abstract

A two-component stapling strategy is used to covalently tether a new class of water-soluble supramolecular polymers built from bay-functionalized perylene bisimide (PBI) units. By leveraging a novel combined strategy where...

Functionalization of Electrode Surfaces with Reactive Supramolecular Oligomers Enables the Control of Monolayer Properties to Restore Electrochemical Reversibility

“…These spectroscopic features indicate the formation of NDI-derived assemblies. − Using the change of absorptivity at 635, 640, 645, and 650 nm as fingerprints for the formation of noncovalent assembly, we plotted the degree of aggregation (α) as a function of CH 3 CN volume fraction in water (Figure B). This relationship allows us to glean additional insights into the thermodynamic parameters that regulate the formation of the noncovalent assemblies using the supramolecular depolymerization approach introduced by Korevaar and Meijer and exploited by us and others to investigate the properties of water-soluble rylene dyes. − Refer to the Supporting Information for more details. Figure B shows that the best fit suggests a supramolecular (de)­polymerization mechanism that is isodesmic and associated with an elongation equilibrium constant K e = 5.0 × 10 4 mol –1 in pure water.…”

Design and synthesis of covalently tethered “isoG-star” as a recyclable host for selective cesium separation

“…The first approach offers greater synthetic accessibility, allowing for easy functional group modification. [51][52][53][54] However, it requires precise template design to ensure the establishment of self-assembly with optimal non-covalent binding, which can be challenging. On the other hand, the post-assembly modification approach ensures the formation of a supramolecular assembly with strong non-covalent interactions, similar to the self-assembly process.…”