A graft-to strategy of poly(vinylphosphonates) on dopazide-coated gold nanoparticles using <i>in situ</i> catalyst activation

Weingarten, Philipp; Thomas, Sophie R.; Luiza de Andrade Querino, Ana; Halama, Kerstin; Kränzlein, Moritz; Casini, Angela; Rieger, Bernhard

doi:10.1039/d4ra01116c

RSC Adv.

2024

DOI: 10.1039/d4ra01116c

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A graft-to strategy of poly(vinylphosphonates) on dopazide-coated gold nanoparticles using in situ catalyst activation

Philipp Weingarten,

Sophie R. Thomas,

Ana Luiza de Andrade Querino

et al.

Abstract: A graft-to-strategy to tether alkyne-terminated polyesters to the surface of dopazide stabilised AuNPs via click chemistry in aqueous conditions in situ.

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Cited by 2 publications

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Merging σ‐Bond Metathesis with Polymerization Catalysis: Insights into Rare‐Earth Metal Complexes, End‐Group Functionalization, and Application Prospects

Adams

2024

Macromol. Rapid Commun.

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Polymers with well‐defined structures, synthesized through metal‐catalyzed processes, and having end groups exhibiting different polarity and reactivity than the backbone, are gaining considerable attention in both scientific and industrial communities. These polymers show potential applications as fundamental building blocks and additives in the creation of innovative functional materials. Investigations are directed toward identifying the most optimal and uncomplicated synthetic approach by employing a combination of living coordination polymerization mediated by rare‐earth metal complexes and C–H bond activation reaction by σ‐bond metathesis. This combination directly yields catalysts with diverse functional groups from a single precursor, enabling the production of terminal‐functionalized polymers without the need for sequential reactions, such as termination reactions. The utilization of this innovative methodology allows for precise control over end‐group functionalities, providing a versatile approach to tailor the properties and applications of the resulting polymers. This perspective discusses the principles, challenges, and potential advancements associated with this synthetic strategy, highlighting its significance in advancing the interface of metalorganic chemistry, polymer chemistry, and materials science.

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Merging σ‐Bond Metathesis with Polymerization Catalysis: Insights into Rare‐Earth Metal Complexes, End‐Group Functionalization, and Application Prospects

Adams

2024

Macromol. Rapid Commun.

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Thermo- and Photoresponsive Smart Nanomaterial Based on Poly(diethyl vinyl phosphonate)-Capped Gold Nanoparticles

Buonerba,

Lapenta,

Della Monica

et al. 2024

Nanomaterials

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A new nanodevice based on gold nanoparticles (AuNPs) capped with poly(diethylvinylphosphonate) (PDEVP) has been synthesized, showing interesting photophysical and thermoresponsive properties. The synthesis involves a properly designed Yttriocene catalyst coordinating the vinyl-lutidine (VL) initiator active in diethyl vinyl phosphonate polymerization. The unsaturated PDEVP chain ending was thioacetylated, deacetylated, and reacted with tetrachloroauric acid and sodium borohydride to form PDEVP-VL-capped AuNPs. The NMR, UV–Vis, and ESI-MS characterization of the metal nanoparticles confirmed the formation of the synthetic intermediates and the expected colloidal systems. AuNPs of subnanometric size were determined by WAXD and UV–Vis analysis. UV–Vis and fluorescence analysis confirmed the effective anchoring of the thiolated PDEVP to AuNPs. The formation of 50–200 nm globular structures was assessed by SEM and AFM microscopy in solid state and confirmed by DLS in aqueous dispersion. Hydrodynamic radius studies showed colloidal contraction with temperature, demonstrating thermoresponsive behavior. These properties suggest potential biomedical applications for the photoablation of malignant cells or controlled drug delivery induced by light or heat for the novel PDEVP-capped AuNP systems.

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A graft-to strategy of poly(vinylphosphonates) on dopazide-coated gold nanoparticles using in situ catalyst activation

Abstract: A graft-to-strategy to tether alkyne-terminated polyesters to the surface of dopazide stabilised AuNPs via click chemistry in aqueous conditions in situ.

Cited by 2 publications

References 53 publications

Merging σ‐Bond Metathesis with Polymerization Catalysis: Insights into Rare‐Earth Metal Complexes, End‐Group Functionalization, and Application Prospects

Merging σ‐Bond Metathesis with Polymerization Catalysis: Insights into Rare‐Earth Metal Complexes, End‐Group Functionalization, and Application Prospects

Thermo- and Photoresponsive Smart Nanomaterial Based on Poly(diethyl vinyl phosphonate)-Capped Gold Nanoparticles

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