Silver atom and strand numbers in fluorescent and dark Ag:DNAs
Silver atom and strand numbers in fluorescent and dark Ag:DNAs
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DOI：
10.1039/c2cc17675k
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发表时间：
2012-01-01
影响因子：
4.9
通讯作者：
Gwinn, Elisabeth G.
中科院分区：
文献类型：
--
作者：
Schultz, Danielle;Gwinn, Elisabeth G.
我们使用串联高效液相色谱-质谱联用光谱法鉴定了由寡核苷酸单体和二聚体稳定的可见到红外发射银：DNA络合物中银原子序数N-Ag为10至21。从性质上不同的吸收光谱从裸露的，相同的n银银簇指向银基相互作用作为银dna颜色的起源。
We use tandem HPLC-mass spectrometry with in-line spectroscopy to identify silver atom numbers, N-Ag, of 10 to 21 in visible- to infrared-emitting Ag:DNA complexes stabilized by oligonucleotide monomers and dimers. Qualitatively different absorbance spectra from bare, same-N-Ag silver clusters point to silver-base interactions as the origin for the color of Ag:DNAs.