Emissive Metallacycle‐Crosslinked Supramolecular Networks with Tunable Crosslinking Densities for Bacterial Imaging and Killing

Abstract

The chemical structures and topologies of the crosslinks in supramolecular networks play a crucial role in their properties and functions. Herein, the preparation of a type of poly(N‐isopropylacrylamide) (PNIPAAM)‐based supramolecular networks crosslinked by emissive hexagonal metallacycles is presented. The topological connections in these networks greatly affect their properties, as evidenced by their differences in absorption, emission, lower critical solution temperature, and modulus along with the variation of crosslinking densities. The integration of PNIPAAM and metallacycles in the networks benefits them improved bioavailability, making them serve as reagents for bacterial imaging and killing. This study provides a strategy to prepare cavity‐crosslinked polymer networks for antibacterial applications.

Emissive Metallacage‐Cored Polyurethanes with Self‐Healing and Shape Memory Properties

“…Moreover, the facile functionalization on the peripheries of SCCs makes them ideal candidates as the crosslinks to prepare metallacycle or metallacage‐cored supramolecular networks [10] . For example, our group has reported a series of fluorescent metallacycle‐cored supramolecular networks for sensing and light‐emitting applications [10c, e] . Taking advantage of the well‐defined cavities of metallacages, metallacage‐cored supramolecular networks have been constructed and used for separation and controlled release [10a, d] .…”