Light scattering of aqueous solutions of fullerene-containing polymers

Self-Assembly Behavior of a Stimuli-Responsive Water-Soluble [60]Fullerene-Containing Polymer

“…Another method of improving the solubility and processability of fullerene is to graft different types of polymers to a fullerene molecule to produce fullerene-containing polymers. Fullerene-containing polystyrene (PS) and poly(methyl methacrylate) (PMMA) have been synthesized by several research groups. − Different types of fullerene-containing poly(ethylene oxide)s (PEOs) were developed, and their applications in polymer blends have been examined. − The water-soluble fullerene-containing polymers have been synthesized using cyclodextrin as the supermolecular shielding micro-containers. , In addition, various types of water-soluble fullerene systems were produced by grafting hydrophilic polymers to fullerene. − However, most of these studies focused mainly on the synthesis and chemical characterization of the fullerene-containing polymers, and few studies examined their solution behaviors. ,,,− Many of the solution properties of fullerene-containing polymer systems were conducted in organic solvents, such as tetrahydrofuran (THF). For C 60 -containing PMMA and PS, the C 60 retains its strong donor−acceptor property after modification.…”

Effect of Centrifugal Field upon Hydrodynamic Characteristics of Fullerene C60and Poly(N-vinylpyrrolidone) Complex in Aqueous Solutions

“…In particular, molar masses M SD obtained by sedimentation and diffusion analysis were close to M SD of the matrix polymer. [6,10,11] Intrinsic viscosity values [g] for the complex and the matrix polymer coincided, and sometimes the same dependencies of the specific viscosity on concentration were obtained. [5,6] In addition, the isothermal translational diffusion coefficient values for polymer-fullerene complexes were close to those for the matrix polymer.…”

“…[6,10,11] Intrinsic viscosity values [g] for the complex and the matrix polymer coincided, and sometimes the same dependencies of the specific viscosity on concentration were obtained. [5,6] In addition, the isothermal translational diffusion coefficient values for polymer-fullerene complexes were close to those for the matrix polymer. [5,12] DLS as well as LS methods normally imply that during experiments the solution maintains static state, i.e., it is not subjected to external forces.…”

“…[3][4][5] Investigation of fullerene C 60 and C 70 complexes with poly(Nvinylpyrrolidone) (PVP) by static (LS) and dynamic (DLS) lightscattering methods revealed that large, relatively stable intermolecular structures, which are referred to as clusters or domains, are formed in their dilute solutions, which can be detected even at very small dilutions. [5][6][7][8][9][10][11] Molar masses M w of clusters obtained by the light-scattering method are one to two orders of magnitude greater than those of matrix polymers used for complex preparation. Cluster molar mass (MM) and size depend on the polymer and solvent nature, fullerene content, fullerene type, and the MM of the polymer.…”

Characterization of novel fullerene containing polymers

“…In addition, various types of water-soluble fullerene system were produced by grafting hydrophilic polymer chains to fullerenes [Sun et al, 1999;Okamura et al, 1999;Okamura et al, 2000]. However, most of these studies focused mainly on the synthesis and chemical characterization of the fullerene containing polymers, and very few studies examined their solution behavior [Okamura et al, 1998;Zhou et al, 2001;Sushko et al, 2001;; Yang et al, 2003]. Most of the physical studies on fullerene containing polymer solutions were conducted in organic solvents, such as THF.…”