Synthesis, characterization, and redox reactivity of novel quinone-containing polymer
Synthesis, characterization, and redox reactivity of novel quinone-containing polymer
复制标题
新型含醌聚合物的合成、表征和氧化还原反应活性
DOI：
10.1021/cm010159q
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发表时间：
2001
影响因子：
8.6
通讯作者：
H. Abruña
中科院分区：
文献类型：
--
作者：
K. Takada;P. Gopalan;C. Ober;H. Abruña
通过稳定的自由基聚合（SFRP）的聚（乙烯基羟基喹酮）的合成，以使胶片上的材料沉积在玻璃碳电极上的材料的电化学特性。循环伏安法在水溶液溶液中发现，随着表面上沉积的材料量（γTheo）增加了比率γobs/γtheo（其中γTheo分别代表了所测量的表面覆盖率和理论表面覆盖率，这大幅下降，表明奎因酮位点的显着比例在薄膜厚度时具有电化学性不足。转移与质子转移耦合，因此聚合物骨架的疏水性可能会对质子的可及性产生不利影响。电子转移速率常数和传输系数为d ...
The synthesis of poly(vinyl hydroquinone), PVHQ, via stable free radical polymerization (SFRP) to give a low-dispersity (1.5) material is described. The electrochemical properties of the resulting material deposited as films onto glassy carbon electrodes have been investigated by cyclic voltammetry. In aqueous acetic acid solution, it was found that as the amount of material ostensibly deposited (Γtheo) increased the ratio Γobs/Γtheo (where Γobs and Γtheo represent the measured and the theoretical surface coverage values, respectively) drastically decreased, indicating that a significant fraction of the quinone sites are electrochemically inactive as the film thickness increases. This was attributed to a small electron transfer rate constant and to the fact that the electron transfer is coupled to proton transfer, so the hydrophobicity of the polymer backbone might adversely affect the accessibility of protons. Using Laviron's theory, the electron-transfer rate constant and the transfer coefficient were d...