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首页> 外文期刊>RSC Advances >Voltammetric studies on the inter-relationship between the redox chemistry of TTF, TTF+center dot, TTF2+ and HTTF+ in acidic media
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Voltammetric studies on the inter-relationship between the redox chemistry of TTF, TTF+center dot, TTF2+ and HTTF+ in acidic media

机译：关于TTF，TTF +中心点，TTF2 +和HTTF +在酸性介质中的相互关系研究的volammetric研究

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摘要

The electrochemistry of TTF, TTF+center dot, TTF2+ and HTTF+ (TTF = tetrathiafulvalene) has been studied in acetonitrile (0.1 M Bu4NPF6) solutions containing ethereal HBF4 or trifluoroacetic acid (TFA) using transient and steady-state voltammetric techniques. In the absence of acid, the oxidation of TTF occurs via two, diffusion controlled, chemically and electrochemically reversible, one-electron processes with reversible formal potentials of -74 and 311 mV vs. Fc(0/+) (Fc = ferrocene). The voltammetry in the presence of acid is far more complex. Voltammetric and UV-vis data reveal that the parent TTF undergoes facile protonation to yield the structurally modified HTTF+ cation in the presence of acid. In contrast, detailed analysis of the data show that electrochemically generated TTF+center dot and TTF2+ do not react with acid. The voltammetry in the presence of acid has been simulated to provide a thermodynamic and kinetic description of the acid-base chemistry coupled to electron transfer.
机译：使用瞬态和稳态伏安技术，在含有醚型HBF4或三氟乙酸（TFA）的乙腈（0.1MBu4NPF6）溶液中研究了TTF，TTF +中心点，TTF2 +和HTTF +（TTF = TETRATHIAFULENEVALENE）的电化学。在没有酸的情况下，TTF的氧化通过两种，扩散控制，化学和电化学可逆的单电子过程，具有可逆正式电位-74和311mV与Fc（0 / +）（Fc =二茂）的可逆正式电位。酸存在下的伏安比较复杂。伏安和UV-Vis数据揭示了亲本TTF经历体质，以在酸存在下产生结构改性的HTTF +阳离子。相反，数据的详细分析显示电化学产生的TTF +中心点和TTF2 +不会与酸反应。已经模拟了酸存在的伏安法以提供与电子转移耦合的酸碱化学的热力学和动力学描述。

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