Surface enhanced Raman evidence for Ag+ complexes of adenine, deoxyadenosine and 5'-dAMP formed in silver colloids.
Surface enhanced Raman evidence for Ag+ complexes of adenine, deoxyadenosine and 5'-dAMP formed in silver colloids.
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DOI：
10.1039/c0an00612b
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发表时间：
2010-11
期刊：
影响因子：
--
通讯作者：
Evanthia Papadopoulou;S. Bell
中科院分区：
文献类型：
--
作者：
Evanthia Papadopoulou;S. Bell
本文报道了在碱性pH条件下，在用于表面增强拉曼光谱的胶体银溶液中，腺嘌呤、脱氧腺苷和5‘-DAMP形成高散射的银络合物。这些络合物，以及其他与pH有关的现象，有助于解释以前报道的腺嘌呤SERS光谱的多样性。利用促进络合物形成的条件，即使在盐浓度较高的溶液中，也能在1ppm的范围内检测到核苷酸。
We report the formation of highly scattering silver complexes of adenine, deoxyadenosine and 5'-dAMP under alkaline pH conditions in the colloidal silver solutions which are used for surface-enhanced Raman spectroscopy. These complexes, and other pH-dependent phenomena, help to explain the diversity of previously reported adenine SERS spectra. Using conditions which promote complex formation allows nucleotides to be detected at <1 ppm, even in solutions with high salt concentrations.