The Experts below are selected from a list of 2589 Experts worldwide ranked by ideXlab platform

Wei Wang - One of the best experts on this subject based on the ideXlab platform.

  • self assembly of poly ferrocenyldimethylsilane poly benzyl ether linear dendritic Organometallic Polymer
    European Polymer Journal, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang
    Abstract:

    Abstract A kind of linear-dendritic Organometallic Polymer poly(ferrocenyldimethylsilane)–poly(benzyl ether) (PFS–PBE) was synthesized and the self-assembly behaviors of the Polymer was studied, which has illuminated the formation of multiple morphologies and, in particular, adjusting the concentration of Polymers and adding poly(benzyl ether) into self-assembled solution can form different size and morphology. Furthermore, it was found that the aging time of samples could affect self-assembled morphology. The micelle formation mechanisms were also demonstrated.

  • electrochemical behavior on poly ferrocenyldimethylsilane b poly benzyl ether linear dendritic Organometallic Polymer films
    Journal of Electroanalytical Chemistry, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang, Jianfeng Wang, Chang Chen, Haoqi Gao
    Abstract:

    Abstract The linear-dendritic Polymer poly(ferrocenyldimethylsilane)-b-poly(benzyl ether) (PFS-PBE) films were prepared and their electrochemical behavior in LiClO 4 aqueous electrolyte solutions was investigated with cyclic voltammetry (CV). Reversible CV processes were obtained for PFS 27 -PBE 1 film and irreversible CV processes were obtained for PFS 20 -PBE 2 film in aqueous electrolyte solutions. The kinetic parameters such as the surface transfer coefficient, the apparent diffusion coefficient, and the standard rate constant for electron transfer, for the two films in aqueous LiClO 4 solutions were measured, and the electrode process mechanism of the films was also discussed.

Tao Chen - One of the best experts on this subject based on the ideXlab platform.

  • self assembly of poly ferrocenyldimethylsilane poly benzyl ether linear dendritic Organometallic Polymer
    European Polymer Journal, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang
    Abstract:

    Abstract A kind of linear-dendritic Organometallic Polymer poly(ferrocenyldimethylsilane)–poly(benzyl ether) (PFS–PBE) was synthesized and the self-assembly behaviors of the Polymer was studied, which has illuminated the formation of multiple morphologies and, in particular, adjusting the concentration of Polymers and adding poly(benzyl ether) into self-assembled solution can form different size and morphology. Furthermore, it was found that the aging time of samples could affect self-assembled morphology. The micelle formation mechanisms were also demonstrated.

  • electrochemical behavior on poly ferrocenyldimethylsilane b poly benzyl ether linear dendritic Organometallic Polymer films
    Journal of Electroanalytical Chemistry, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang, Jianfeng Wang, Chang Chen, Haoqi Gao
    Abstract:

    Abstract The linear-dendritic Polymer poly(ferrocenyldimethylsilane)-b-poly(benzyl ether) (PFS-PBE) films were prepared and their electrochemical behavior in LiClO 4 aqueous electrolyte solutions was investigated with cyclic voltammetry (CV). Reversible CV processes were obtained for PFS 27 -PBE 1 film and irreversible CV processes were obtained for PFS 20 -PBE 2 film in aqueous electrolyte solutions. The kinetic parameters such as the surface transfer coefficient, the apparent diffusion coefficient, and the standard rate constant for electron transfer, for the two films in aqueous LiClO 4 solutions were measured, and the electrode process mechanism of the films was also discussed.

Ian Manners - One of the best experts on this subject based on the ideXlab platform.

  • metalloPolymer peptide conjugates synthesis and self assembly of polyferrocenylsilane graft and block coPolymers containing a beta sheet forming gly ala gly ala tetrapeptide segment
    Biomacromolecules, 2006
    Co-Authors: Guido W M Vandermeulen, Kyoung Taek Kim, Zhuo Wang, Ian Manners
    Abstract:

    We describe the synthesis and self-assembly of two β-sheet forming metalloPolymer-peptide conjugates. The ability of the oligotetrapeptide sequence Gly-Ala-Gly-Ala (GAGA) to form antiparallel β-sheets was retained in PFS-b-AGAG (PFS = polyferrocenylsilane) and PFS-g-AGAG conjugates with block and graft architectures, respectively. In the solid state, DSC experiments suggest a phase separation between the peptide and PFS domains. In toluene, PFS-b-AGAG interestingly forms a fibrous network which consists of a core containing the self-assembled antiparallel β-sheet peptide and a corona of Organometallic PFS. The self-assembly of the peptide into antiparallel β-sheets is the driving force for the fiber formation, whereas PFS prevents uncontrolled lateral aggregation of the fibers. The use of an oligopeptide to self-assemble an otherwise random coiled Organometallic Polymer may be a useful strategy to enhance nanostructure formation. In the cases described here, the conjugates may be used to create nanopatter...

  • replicating the structure of a crosslinked polyferrocenylsilane inverse opal in the form of a magnetic ceramic
    Advanced Functional Materials, 2002
    Co-Authors: Josie Galloro, Madlen Ginzburg, Hernan Miguez, San Ming Yang, Neil Coombs, Athena Safasefat, J E Greedan, Ian Manners, G A Ozin
    Abstract:

    Crosslinked polyferrocenylsilane inverse opals have been prepared by the thermal ring-opening Polymerization of spirocyclic [1]silaferrocenophanes confined within the interstitial void spaces of silica crystal colloidal templates. These Organometallic Polymer inverse opals were converted to magnetic ceramic replicas through pyrolysis at 900 °C in high yields.

  • supramolecular Organometallic Polymer chemistry multiple morphologies and superstructures from the solution self assembly of polyferrocene block polysiloxane block polyferrocene triblock coPolymers
    Chemistry: A European Journal, 2001
    Co-Authors: Rui Resendes, Jason A Massey, Mitchell A Winnik, Karen Temple, Lan Cao, Nicole K Powerbillard, Ian Manners
    Abstract:

    The solution self-assembly of an Organometallic-inorganic triblock coPolymer, poly(ferrocenyldimethylsilane)-block-poly(dimethylsiloxane)-block-poly-(ferrocenyldimethylsilane) (PFDMS-b-PDMS-b-PFDMS, 3b; block ratio 1:13:1; Mn = 2.88 x 10(4) gmol(-1), polydispersity (PDI) 1.43 (gel permeation chromatography, GPC)) was studied in n-hexane, a PDMS block selective solvent. Transmission electron microscopy (TEM), atomic force microscopy (AFM), and TEM with negative staining analysis of these micellar solutions after solvent evaporation revealed the presence of multiple micellar morphologies including spheres, cylinders, and novel flower-like supramolecular aggregates. TEM analysis of samples fractionated by ultracentrifugation and preparative size-exclusion chromatography suggest that the formation of multiple morphologies is a consequence of compositional variations. When micellar solutions were prepared at 50 degrees C (above the glass transition of the PFDMS core-forming block) flower-like micellar aggregates similar to those present in micellar solutions prepared at room temperature also formed. However, after solvent evaporation, TEM analysis of micellar solutions prepared in decane at about 150 degrees C, above the melt temperature of the PFDMS core (ca. 120-145 degrees C), revealed the presence of spherical micelles (when decane solutions at 150 degrees C were rapidly cooled to room temperature) and rod-like cylindrical micelles (when decane solutions at 150 degrees C were slowly cooled to room temperature). In contrast, poly(ferrocenylmethylethylsilane)block-poly(dimethylsiloxane)-block-poly(ferrocenylmethylethylsilane) (PFMES-b-PDMS-b-PFMES, 4; block ratio 1:16:1; Mn=2.90x10(4)g mol(-1), PDI= 1.42 (GPC)) and poly(ferrocenylmethylphenylsilane)-block-poly(dimethylsiloxane)-block-poly(ferrocenylmethylphenylsilane) (PFMPS-b-PDMS-b-PFMPS, 5; block ratio 1:15:1; Mn=3.00 x 10(4) gmol(-1), PDI = 1.38 (GPC)), which possess completely amorphous Organometallic core-forming blocks, formed only spherical micelles in hexane at room temperature. These observations indicate that crystallinity of the insoluble polyferrocenylsilane block is a critical factor in the formation of the nonspherical micelle morphologies.

  • supramolecular Organometallic Polymer chemistry self assembly of a novel poly ferrocene b polysiloxane b poly ferrocene triblock coPolymer in solution
    Angewandte Chemie, 1999
    Co-Authors: Rui Resendes, Jason A Massey, Hendrik Dorn, Nicole K Power, Mitchell A Winnik, Ian Manners
    Abstract:

    Micelles with unprecedented flowerlike arrangements of the poly(ferrocene) cores (shown in the TEM image) are among the supramolecular architectures generated in the self-assembly of a novel Organometallic triblock coPolymer from silicon-bridged [1]ferrocenophane monomers and [Me(2)SiO](3) in hexane, a solvent selective for the central polysiloxane block.

Xuejie Wang - One of the best experts on this subject based on the ideXlab platform.

  • self assembly of poly ferrocenyldimethylsilane poly benzyl ether linear dendritic Organometallic Polymer
    European Polymer Journal, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang
    Abstract:

    Abstract A kind of linear-dendritic Organometallic Polymer poly(ferrocenyldimethylsilane)–poly(benzyl ether) (PFS–PBE) was synthesized and the self-assembly behaviors of the Polymer was studied, which has illuminated the formation of multiple morphologies and, in particular, adjusting the concentration of Polymers and adding poly(benzyl ether) into self-assembled solution can form different size and morphology. Furthermore, it was found that the aging time of samples could affect self-assembled morphology. The micelle formation mechanisms were also demonstrated.

  • electrochemical behavior on poly ferrocenyldimethylsilane b poly benzyl ether linear dendritic Organometallic Polymer films
    Journal of Electroanalytical Chemistry, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang, Jianfeng Wang, Chang Chen, Haoqi Gao
    Abstract:

    Abstract The linear-dendritic Polymer poly(ferrocenyldimethylsilane)-b-poly(benzyl ether) (PFS-PBE) films were prepared and their electrochemical behavior in LiClO 4 aqueous electrolyte solutions was investigated with cyclic voltammetry (CV). Reversible CV processes were obtained for PFS 27 -PBE 1 film and irreversible CV processes were obtained for PFS 20 -PBE 2 film in aqueous electrolyte solutions. The kinetic parameters such as the surface transfer coefficient, the apparent diffusion coefficient, and the standard rate constant for electron transfer, for the two films in aqueous LiClO 4 solutions were measured, and the electrode process mechanism of the films was also discussed.

Jianjun Wang - One of the best experts on this subject based on the ideXlab platform.

  • self assembly of poly ferrocenyldimethylsilane poly benzyl ether linear dendritic Organometallic Polymer
    European Polymer Journal, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang
    Abstract:

    Abstract A kind of linear-dendritic Organometallic Polymer poly(ferrocenyldimethylsilane)–poly(benzyl ether) (PFS–PBE) was synthesized and the self-assembly behaviors of the Polymer was studied, which has illuminated the formation of multiple morphologies and, in particular, adjusting the concentration of Polymers and adding poly(benzyl ether) into self-assembled solution can form different size and morphology. Furthermore, it was found that the aging time of samples could affect self-assembled morphology. The micelle formation mechanisms were also demonstrated.

  • electrochemical behavior on poly ferrocenyldimethylsilane b poly benzyl ether linear dendritic Organometallic Polymer films
    Journal of Electroanalytical Chemistry, 2006
    Co-Authors: Tao Chen, Li Wang, Guohua Jiang, Jianjun Wang, Xuejie Wang, Junfeng Zhou, Wei Wang, Jianfeng Wang, Chang Chen, Haoqi Gao
    Abstract:

    Abstract The linear-dendritic Polymer poly(ferrocenyldimethylsilane)-b-poly(benzyl ether) (PFS-PBE) films were prepared and their electrochemical behavior in LiClO 4 aqueous electrolyte solutions was investigated with cyclic voltammetry (CV). Reversible CV processes were obtained for PFS 27 -PBE 1 film and irreversible CV processes were obtained for PFS 20 -PBE 2 film in aqueous electrolyte solutions. The kinetic parameters such as the surface transfer coefficient, the apparent diffusion coefficient, and the standard rate constant for electron transfer, for the two films in aqueous LiClO 4 solutions were measured, and the electrode process mechanism of the films was also discussed.