An OFF-OFF-ON fluorescence sensor for metal ions in stepwise complex formation of 2,3,5,6-tetrakis(2-pyridyl)pyrazine with metal ions.
An OFF-OFF-ON fluorescence sensor for metal ions in stepwise complex formation of 2,3,5,6-tetrakis(2-pyridyl)pyrazine with metal ions.
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DOI：
10.1021/ja066381j
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发表时间：
2006-11
影响因子：
15
通讯作者：
J. Yuasa;S. Fukuzumi
中科院分区：
文献类型：
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作者：
J. Yuasa;S. Fukuzumi
当金属离子 (Mn+) 浓度高于金属离子浓度与 TPPZ 初始浓度之比 1:2 ([Mn+]/[TPPZ]0 > 0.5) 时，2,3,5,6-四(2-吡啶基)吡嗪 (TPPZ) 的荧光强度开始增加，当 TPPZ 与 Mn+ 的 2:1 络合物 [(TPPZ)2-Mn+] 转化为 1:1 时TPPZ 与 Mn+ 的配合物（TPPZ-Mn+），表现出强荧光。
The fluorescence intensity of 2,3,5,6-tetrakis(2-pyridyl)pyrazine (TPPZ) begins to increase at concentrations of metal ions (Mn+) above the 1:2 ratio of metal ion concentration to the initial concentration of TPPZ ([Mn+]/[TPPZ]0 > 0.5), when a 2:1 complex of TPPZ with Mn+ [(TPPZ)2-Mn+] is converted to a 1:1 complex of TPPZ with Mn+ (TPPZ-Mn+), which exhibits strong fluorescence.