【摘要】 本工作研究了化合物１３－ＳＯ＿３Ｎａ－ＤＤＨＡ在不同ｐＨ的缓冲溶液中的电化学氧化还原行为．实验证明：化合物中羰基的还原电位与ｐＨ之间存在线性关系，其直线的斜率为６０ｍＶ／ｐＨ．并证明了此过程为一步两电子、两质子还原过程：Ｑ＋２Ｈ￣＋＋２ｅ＝ＱＨ＿２．ＤＭＦ作为非质子溶剂，具有很好的稳定自由基的作用．向缓冲溶液中加入ＤＭＦ后，化合物１３－ＳＯ＿３Ｎａ－ＤＤＨＡ为两步单电子还原过程，相应溶液中的光诱导电子转移吸收光谱证实了以上电化学的结果．更多还原

【Abstract】 The electrochemical redox behavior of compound 13-SO₃Na-DDHA in buffer solution of different pH values repertively has been studied. There is a linear relationship between the reduction potential of carbonyl group and pH value.The slope of this line is about 60mV/pH. This result corresponds to one step 2-electron,2-proton reduction process:Q+2H￣++2e=QH₂. As a polar but non-proton solvent,DMF is favorable for radicalstabilization. If DMF is added to a buffer solution,this compound may be reduced by twostep one-electron processes.更多还原