【J. Phys. Chem. B】Hyperbranched Ferrocenyl Polymer Film with High Charge Transport Efficiency
放假回了,发现文章刚刚正式发表,虽然一般,也是俺最好的啦!哈哈Authors:
[b]Jia Huo,[/b] [b]Li Wang[/b][b],et al.[/b]
Web Release Date:
August 22, 2008
DOI:
10.1021/jp7121888
Abstract:
The electrochemical behaviors of hyperbranched poly(ferrocenyl-methylsilane) (HPFMS) and linear oligo(ferrocenyldimethylsilane) (LOFS) films were studied systematically by cyclic voltammetry and chronocoulometry under different polymer coverage and solvents. Both poly(ferrocenylsilanes) show stable cyclic voltammographs in LiClO4 solutions. Compared with LOFS films, HPFMS films exhibit higher charge transport efficiency because of their hyperbranched structure: peak current ([i]i[/i]p) and apparent diffusion coefficient ([i]D[/i]app) for HPFMS films are larger than those for LOFS films, especially at high polymer coverage (3.8 × 10−11 vs 3.9 × 10−12 cm2/s for HPFMS and LOFS film at the coverage of 2.1 × 10−6 mol Fc/cm2). The conceptual models of electrode processes for HPFMS and LOFS films were proposed to account for higher charge transport efficiency of HPFMS films. It is also found that a solvent with the appropriate solubility parameter and polarity, lower viscosity, and higher dielectric constant is in favor of charge transport through polymer films, which is consistent with the proposed model of electrode process for HPFMS films. These results imply that hyperbranched ferrocenyl polymers have the potential to be excellent chemical sensor materials with convenient synthesis and high sensitivity.
Link:
[url=http://pubs.acs.org/cgi-bin/abstract.cgi/jpcbfk/asap/abs/jp7121888.html]http://pubs.acs.org/cgi-bin/abstract.cgi/jpcbfk/asap/abs/jp7121888.html[/url]
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