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love36183618木蟲 (初入文壇)
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[求助]
部分論文翻譯,大家?guī)鸵幌旅,謝謝
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BCDO與DNA相互作用的紫外/可見吸收光譜見圖3.33所示。若熒光分子以嵌入方式結(jié)合于DNA雙螺旋的堿基對(duì)時(shí),其紫外吸收光譜會(huì)表現(xiàn)出峰位的紅移以及減色效應(yīng)。 由圖3.33可以看出,DNA與BCDO作用后,BCDO的吸收光譜在260nm處的特征吸收峰產(chǎn)生明顯的減色效應(yīng),這可認(rèn)為是BCDO與DNA發(fā)生了嵌插作用。這是由于插入配體的BCDO小分子與DNA的配體的π空軌道與堿基的π*軌道發(fā)生偶合,偶合以后的π*軌道因?yàn)椴糠痔畛潆娮,使得π~?躍遷幾率減小,從而產(chǎn)生減色效應(yīng)。 |
木蟲 (初入文壇)
至尊木蟲 (職業(yè)作家)
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The UV-Vis spector of the interaction between BCDO and DNA is seen in the figure 3.33 .When fluorescent molecule binded with double helix DNA in a imbedded way ,it UV-Vis spector will display a red shift and hypochromic effect on the peak . From the picture of 3.33 ,we can see that BCDO’s absorb spector has a special absorption peak after the action between DNA and BCDO ,from which we think there has a intercalation .we conclude that the π space orbit of the ligand of BCDO and DNA has a coupling with the π* orbit ,then the electron in the π* orbital increased to reduce transition probability on π~π* and we can see a hypochromic effect . |

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