Optically detected zero field magnetic resonance characterization of a bromine atom-containing polynucleotide, poly(dA-br5dU).
Optically detected zero field magnetic resonance characterization of a bromine atom-containing polynucleotide, poly(dA-br5dU).
复制标题
含溴原子多核苷酸聚（dA-br5dU）的光学检测零场磁共振表征。
DOI：
10.1016/0304-4165(84)90292-7
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Maki,AH
中科院分区：
文献类型：
--
作者：
Cha,TA;Maki,AH
Phosphorescence and optically detected zero field magnetic resonance (ODMR) spectra are reported for a bromine atom-containing polynucleotide, poly(dA-br5dU). The triplet state luminescence of poly(dA-br5dU) is dominated by the phosphorescence of the bromouracil base which possesses sub-millisecond triplet lifetimes. Characteristic multiple slow passage ODMR transitions, which are observed in both br5dUrd and poly(dA-br5dU), are assigned to the triplet state of bromouracil. In addition, an abnormally-perturbed adenine triplet state, which is not apparent in the phosphorescence spectrum of poly(dA-br5dU), is detected and identified by its slow passage ODMR and amplitude-modulated phosphorescence microwave double resonance spectra. It is proposed that the perturbed adenine is a minor component of the polynucleotide structure which is present in regions of altered stacking induced by the high polarizability of the Br atom.
