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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Zinc-cyclen coordination to UTP, TTP or pyrophosphate induces pyrene excimer emission
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Zinc-cyclen coordination to UTP, TTP or pyrophosphate induces pyrene excimer emission

机译:锌环与UTP,TTP或焦磷酸盐的配位诱导pyr准分子的发射

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摘要

Pyrene labelled Zn~(2+)-cyclen 1 and bis-Zn~(2+)-bis-cyclen 2 complexes were synthesized. The reversible coordination at physiological pH of Zn~(2+)-cyclens to phosphate anions and to imide moieties, as present in thymine and uracil nucleotides, is well known. In the presence of analytes bearing a phosphate and an imide or two phosphate groups the formation of a ternary complex consisting of two pyrene-labelled metal complexes and the analyte molecule, is observed. The close proximity of the pyrene labels in the complex induces pyrene excimer emission, which is observable by the unarmed eye. By this, the presence of UMP, UDP, UTP and TTP in buffered aqueous solution is signalled, while other nucleotides are not able to induce excimer emission. In the same way, Zn~(2+)-cyclen-pyrene acts as luminescent chemosensor for PP_i and fructose-1,6-bisphosphate in aqueous buffer.
机译:合成了labeled标记的Zn〜(2 +)-cycln 1和双-Zn〜(2 +)-bis-cycln 2配合物。众所周知,在胸腺嘧啶和尿嘧啶核苷酸中,Zn〜(2 +)-细胞周期蛋白在生理pH值下可逆配位为磷酸根阴离子和酰亚胺部分。在存在带有磷酸根和酰亚胺基团或两个磷酸根基团的分析物的存在下,观察到形成了由两个pyr标记的金属配合物和分析物分子组成的三元配合物。 complex标记物在配合物中的紧密接近引起pyr准分子发射,这可以由无武装的眼睛观察到。通过这种方式,表明缓冲水溶液中存在UMP,UDP,UTP和TTP,而其他核苷酸则不能诱导准分子发射。以同样的方式,Zn〜(2 +)-环己基as在水性缓冲液中充当PP_1和果糖1,,6-二磷酸的发光化学传感器。

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