Synthesis and Characterization of Gd@C₈₂-PVK and C₆₀-PVK–A Kind of Fullerene-Grafted Polymer

Abstract

Different fullerene-grafted poly(N-vinylcarbazole) was synthesized by free radical polymerization and the influence of the amount of initiator, the reaction time and the reaction temperature on the polymerization was studied. Metallofullerene-grafted polymer (Gd@C82-PVK) was firstly synthesized and characterized by GPC, UV-vis, FTIR, DSC, XPS. The results demonstrated that the fullerenes had chemically combined with PVK. Fluorescence spectra suggested that the grafted fullerenes had certain influence on the fluorescence properties of the polymer. This is due to the better electron-attractive ability of fullerenes, which contributed a lot to form the electron donor-acceptor systems in fullerene-grafted poly(N-vinylcarbazole). Potential applications of this kind of materials in optical and memory devices were expected.

Recent progress in the chemistry of endohedral metallofullerenes

“…Recently, free-radical polymerization of poly-N-vinylcarbazone (7) with either C 60 or Gd@C 82 was performed to synthesize the corresponding polymer-grafted fullerene derivatives. 31 Spectroscopic studies confirmed the covalent attachment of the fullerene species. Fluorescence spectra suggested that the covalently grafted fullerenes had certain influences on the fluorescence properties of the polymer.…”

Redox Modulation of the Reactivity and Regioselectivity in Diels–Alder Reaction of Metallofullerene La@C82 with Cyclopentadiene

“…M@C 2v (9)‐C 82 (M=rare‐earth metals) is one of the most abundant metallofullerene species that have been studied extensively [1a,d] . Typical exhohedral reactions of M@C 82 , such as radical addition reactions, [4] Diels‐Alder reactions, [5] Bingel‐Hirsch reactions [6] and 1,3‐dipolar cycloaddition reactions, [7] have been utilized to produce covalent derivatives of M@C 82 . Diels‐Alder reactions of La@C 82 with cyclopentadiene (Cp) and 1,2,3,4,5‐pentamethylcyclopentadiene (Cp*) have been studied previously [5] .…”

Synthesis of Iron-Fullerene Complexes by Scattering of C₆₀ Ions on Ferrocenyl-Undecanethiol SAM Surfaces

“…In the last decade, synthesis of many endohedral metallofullerenes (EMFs) [1] that encapsulate Li [2], La [3][4][5], Sc [6,7], Gd [8,9], Yb [10,11], Ba [12], and Sm [13] have been reported. It is expected that EMFs encapsulating Gd atom(s) or Gd@C 82 [8,9] can be used as contrast agents in magnetic resonance imaging (MRI) owing to the increased stability of the Gd (III) ion, minimal toxic effects, high solubility in water, and high proton relaxivity [14]. Metal-fullerene complexes, which include Os [15,16], Zn [17], and Co [18] are also important in fullerene chemistry because of their potential applications in biological, magnetic, electronic, catalytic, and optical devices.…”