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首页> 外文期刊>Chinese science bulletin >Thymine and adenine derivatives with pyrene, tetrathia-fulvalene and nitronyl nitroxide units: Synthesis and formation of ensembles sensing thymine and adenine molecules
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Thymine and adenine derivatives with pyrene, tetrathia-fulvalene and nitronyl nitroxide units: Synthesis and formation of ensembles sensing thymine and adenine molecules

机译：带有pyr，四硫富瓦烯和硝酰基硝基氧单元的胸腺嘧啶和腺嘌呤衍生物：感应胸腺嘧啶和腺嘌呤分子的集合体的合成与形成

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摘要

Four thymine (T) and adenine (A) derivatives with pyrene, tetrathiafulvalene and nitronyl nitroxide units (1, 2, 3 and 4) were synthesized and characterized. Fluorescent spectral studies indicate that the corresponding T and A derivatives can form ensembles with the association constant of ca. 10~4 L/mol. The ensemble of 1 and 2 shows pyrene exci-mer emission, while that of 1/3 and 2/4 displays rather weak fluorescence due to the "intramolecular" photoinduced electron transfer reactions. Addition of compounds 5 or 6, which is T and A derivatives, respectively, to the ensembles of 1/2, 1/3 and 2/4 results in reduction of excimer emission and enhancement of pyrene fluorescence. These results show that these ensembles are able to sense T and A molecules.
机译：合成并表征了具有pyr，四硫富瓦烯和亚硝酰基硝基氧单元（1、2、3和4）的四种胸腺嘧啶（T）和腺嘌呤（A）衍生物。荧光光谱研究表明，相应的T和A衍生物可以与ca的缔合常数形成整体。 10〜4升/摩尔1和2的集合显示出transfer准分子发射，而1/3和2/4的集合由于“分子内”光致电子转移反应而显示出相当弱的荧光。将分别为T和A衍生物的化合物5或6加到1 / 2、1 / 3和2/4的集合中，导致准分子发射的减少和emission荧光的增强。这些结果表明，这些集合体能够感知T和A分子。

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