Rhodium-complexed hyperbranched poly(ethyleneimine) and polyamidoamine and their non-covalent immobilization on magnetic nanoparticles

Omar, Suheir; Dutta, Bishnu; Natour, Suzana; Abu‐Reziq, Raed

doi:10.1016/j.jorganchem.2016.05.021

Cited by 6 publications

(1 citation statement)

References 66 publications

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“…Functionalization reactions can be conducted in metals [46], ceramics [47], and synthetic or natural polymers [48,49]. The aim of functionalization is to modify, tune, or add surface properties to a material once they play a key role in the overall performance of materials [42], especially those with nanometric sizes.…”

Section: Functionalization Studies In Ldh and Lhsmentioning

confidence: 99%

Functionalization of Surfaces in Layered Double Hydroxides and Hydroxide Salt Nanoparticles

Arízaga¹,

Jiménez²,

Viruete³

et al. 2016

Functionalized Nanomaterials

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Layered double hydroxides (LDH) and layered hydroxide salts (LHS) are widely studied as matrices to design new materials with applications in several areas of science and technology. Both LDH and LHS are composed of molecular layered units with surfaces fully covered by hydroxyl groups and positive-charge residues within the layers; therefore, anions in the interlayer space are needed. Even though these anions are described as interlayer species without a covalent interaction with the molecular layered units, the substitution of hydroxyl groups is also possible; in other words, the functionalization of the surface could occur. This chapter reviews results previously published related to the functionalization phenomenon in LDH and LHS, which is not considered in most of the scientific reports of new materials derived from these compounds. In this text, the use of copper probes to study electron paramagnetic resonance spectra, reinforced with infrared spectroscopy to confirm functionalization, is described. The occurrence of functionalization instead of a simple anion exchange provides a change of properties in the final nanosized material.

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Section: Functionalization Studies In Ldh and Lhsmentioning

confidence: 99%

Functionalization of Surfaces in Layered Double Hydroxides and Hydroxide Salt Nanoparticles

Arízaga¹,

Jiménez²,

Viruete³

et al. 2016

Functionalized Nanomaterials

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Cross‐Linked Polyamine from Imidazolium‐Based Materials: A Simple Route to Useful Catalytic Materials

et al. 2018

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Cross‐linked polyamine‐based materials were easily prepared by reduction of the corresponding cross‐linked imidazolium‐based materials with sodium borohydride in hot ethanol. Overall, the synthetic procedure is based on the polymerization of a suitable bis‐vinylimidazolium salt with or without a suitable support, such as silica or silica‐coated magnetic nanoparticles (γ‐Fe2O3@SiO2), followed by reduction. This simple approach allows the synthesis of materials based on a network of secondary and tertiary amines. Materials were characterized by 13C cross‐polarization magic angle spinning NMR (13C CPMAS NMR), proton spin‐lattice relaxation times in the rotating frame (T1ρH) and thermogravimetric analysis (TGA). Cross‐linked polyamine‐based materials were used as recoverable catalyst for Knoevenagel reaction. High yields of the condensation products were obtained and up to 11 cycles were carried out.

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Three-component coupling of boronic acids, amines, and carbon disulfide by a heterogeneous catalyst of copper (II) embedded in a highly porous and magnetic Schiff base network of melamine

et al. 2023

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Rhodium-complexed hyperbranched poly(ethyleneimine) and polyamidoamine and their non-covalent immobilization on magnetic nanoparticles

Cited by 6 publications

References 66 publications

Functionalization of Surfaces in Layered Double Hydroxides and Hydroxide Salt Nanoparticles

Functionalization of Surfaces in Layered Double Hydroxides and Hydroxide Salt Nanoparticles

Cross‐Linked Polyamine from Imidazolium‐Based Materials: A Simple Route to Useful Catalytic Materials

Three-component coupling of boronic acids, amines, and carbon disulfide by a heterogeneous catalyst of copper (II) embedded in a highly porous and magnetic Schiff base network of melamine

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