Calix[4]semitube diquinone: a potassium selective redox-active ionophore

Calix[4]semitube diquinone: a potassium selective redox-active ionophore
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Calix[4]半管二醌:钾选择性氧化还原活性离子载体

DOI:
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发表时间:
2003
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影响因子:
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通讯作者:
P. Beer
P. Beer
中科院分区:
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文献类型:
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作者:
P. R. Webber;A. Cowley;P. Beer

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在TFA(三氟乙酸)中,用Tl(OCOCF3)3氧化杯状[4]半管,得到了具有氧化活性的新型离子载体杯状[4]半管二醌。该受体对钾离子表现出显著的选择性偏好,优于所有其他1族金属阳离子,这一特性反映了母体杯状[4]半管,然而其络合动力学相对较慢。该受体对钠离子和钾离子表现出明显的电化学识别作用。
Oxidation of calix[4]semitube with Tl(OCOCF3)3 in TFA (trifluoroacetic acid) affords the novel redox-active ionophore calix[4]semitube diquinone. This receptor displays a remarkable selectivity preference for potassium cations over all other Group 1 metal cations, a property mirroring that of the parent calix[4]semitube, however its kinetics of complexation are relatively slow. The receptor exhibits substantial electrochemical recognition effects towards sodium and potassium cations.