Chemical Communication between Organometallic Single‐Chain Polymer Nanoparticles. Issue 68 (28th October 2020)

• Record Type: Journal Article
• Authors: Kobernik, Victoria; Berkovich, Inbal; Levy, Avishai; Lemcoff, N. Gabriel; Diesendruck, Charles E.
• Is Part Of: Chemistry. Volume 26:Issue 68(2020)
• Page Start: 15835
• Page End: 15838
• Publication Date: 2020-10-28
• Subjects: chemical communication -- intramolecular collapse -- metallopolymers -- polybutadiene -- single-chain polymer nanoparticles; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202003330
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Chemical communication between macromolecules was studied by observing the controlled single chain collapse that ensues the exchange of a metal cross‐linker between two polymer chains. The rhodium (I) organometallic cross‐linker transfer from a low molecular weight collapsed polybutadiene to a larger polymer was followed using size exclusion chromatography. The increased effective molarity in the larger polymer seems to be the driving force for the metal migration. Thus, we demonstrate here a strategy for transferring a molecular signal that induces chain collapse of a polymer chain based on non‐covalent interactions, mimicking biological behaviors reminiscent of signal transductions in proteins. Abstract : Macromolecular chemical communication: A rhodium complex is used for chemical communication between two polymer chains, causing the unfolding of one and the folding of the other. The chemical communication is mainly controlled by effective molarity, circumventing thermodynamic preference. The chemical communication causes dramatic changes in chain properties, such as hydrodynamic volume and intrinsic viscosity.