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Spectral Study of the Interaction of DNA with Benzothiazolyl-benz-alpha-chromene

机译:DNA与苯并噻唑-苯并-α-色烯相互作用的光谱研究

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摘要

Absorption and luminescence excitation and emission spectra of newly synthesized 2-(4-methylphenylimino)-3-(2'-benzothiazolyl)benz-alpha-chromene(BCBT)have been studied in the presence of various DNA concentrations.BCBT is characterized by the existence of two different fluorescent systems,exhibiting radiationless fluorescence resonance energy transfer between them.In the range of molar ratios of polynucleotide/dye concentrations from 0 to 50,BCBT preferentially intercalates into DNA due to its benz-alpha-chromene fragment,whereas the 2-benzothiazolyl fragment is responsible for fluorescence.
机译:在各种DNA浓度下,研究了新合成的2-(4-甲基苯基亚氨基)-3-(2'-苯并噻唑基)苯-α-色烯(BCBT)的吸收和发光激发和发射光谱。存在两个不同的荧光系统,在它们之间表现出无辐射的荧光共振能量转移。在多核苷酸/染料浓度的摩尔比范围从0到50的范围内,BCBT由于其苯-α-色烯片段而优先插入DNA,而2 -苯并噻唑基片段负责荧光。

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