We found an ultraviolet （UV）-light induced formation of biphenyl and sodium benzoate from benzene and sodium carbonate. The reaction happens in the interface of benzene and aqueous solution at the room temperature. ...
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We found an ultraviolet （UV）-light induced formation of biphenyl and sodium benzoate from benzene and sodium carbonate. The reaction happens in the interface of benzene and aqueous solution at the room temperature. After 5 h of UV-light exposure, 11.4% of initial amount of 4.4 g （5.0 mL） benzene are converted to biphenyl and sodium benzoate, which are distributed in benzene and aqueous solution, respectively. Using density function theory （DFT） and time dependent DFT, we have investigated the mechanism of this light-induced reaction, and found that the sodium carbonate is not only a reactant for the formation of sodium benzoate, but also a catalyst for the formation of biphenyl.
蛋白质和核酸是构成生命体最为重要的两类生物大分子,它们之间的相互作用是分子生物学研究的中心问题之一,也是许多生命活动的重要组成部分。本文基于一种全新的超低场生物力谱技术,以凝血酶蛋白为研究对象,考察了凝血酶与其对应的核酸适配体之间的相互作用。结果表明,凝血酶蛋白与核酸适配体之间的结合力大小约为80 p N。同时,在分子水平上获得了凝血酶蛋白与核酸适配体之间的解离动力学信息。
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