Related Experiment Video
Updated: Mar 25, 2026

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
Exploring the Modularity of Triphenylphosphine-Containing Polymers as Diverse Transition Metal Catalysts
Matthew P Bogen1, William M Swofford1, Matthew A Sanders1
1Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.
Abstract:
Polymers provide a versatile platform for tuning the local environment of transition metal catalysts, yet most systems are optimized for a single metal or reaction class. Here, we demonstrate that a single copolymer of triphenylphosphine acrylamide (TPPAm) and N,N-dimethylacrylamide (DMA) can be modularly complexed with transition metals to access multiple unique catalysts, each capable of mediating distinct chemical transformations. Specifically, three metal-polymer catalysts were evaluated in transformations characteristic of each metal center, including Sonogashira cross-coupling (Pd), allylic amination (Pt), and 1,4-conjugate addition (Rh). Phosphine coordination was required for catalysis, as indicated by minimal reactivity of metal-treated, nonfunctional polymer controls. Across all systems, the polymer-supported catalysts exhibited reactivity comparable to or exceeding that of small-molecule analogues with improved operational stability observed for select metal centers under benchtop conditions. Collectively, these results establish TPPAm-containing polymers as a generalizable scaffold for polymer-supported catalysis across multiple metal centers and provide a foundation for systematically probing how metal identity and polymer structure jointly govern catalytic behavior.
Related Concept Videos
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
Ziegler–Natta Chain-Growth Polymerization: Overview
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
Heterogeneous Catalysis
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...

