Visible-Light Photoresponsivity of a 4-(Dimethylamino)azobenzene Unit Incorporated into Single-Stranded DNA: Demonstration of a Large Spectral Change Accompanying Isomerization in DMSO and Detection of Rapid (Z)-to-(E) Isomerization in Aqueous Solution
作者:Takashi Kamei、Masabumi Kudo、Haruhisa Akiyama、Momoyo Wada、Jun'ichi Nagasawa、Masahiro Funahashi、Nobuyuki Tamaoki、Taro Q. P. Uyeda
DOI:10.1002/ejoc.200600935
日期:2007.4
wavelength light, which induced (E)-to-(Z) isomerization. In addition, (Z)-to-(E) isomerization was accelerated by irradiation with either visible (λ = 550 nm) or UV (λ = 350 nm) light, demonstrating reversible photoresponsivity of the pseudo-oligonucleotide. In aqueous solutions the (Z)-to-(E) thermal isomerization of the photoresponsive pseudo-oligonucleotide was very rapid and was only detectable by laser
我们在含有内置假核苷酸的合成寡核苷酸中表现出显着的可见光光响应性,该假核苷酸具有 4-(二甲氨基) 偶氮苯 (4-DMAzo) 侧链。在作为溶剂的干燥 DMSO 中,在用 420 nm 波长的光照射之前和之后,用常规分光光度计记录了对应于 (E) 和 (Z) 形式的 4-DMAzo 部分与寡核苷酸相连的两个清晰可辨的光谱,其诱导了( E)-to-(Z) 异构化。此外,通过可见光(λ = 550 nm)或紫外线(λ = 350 nm)光照射加速(Z)到(E)异构化,证明了伪寡核苷酸的可逆光响应性。