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    • 7. 发明申请
    • CHEMICAL ENHANCEMENT BY NANOMATERIALS UNDER X-RAY IRRADIATION
    • 通过X射线辐射下的纳米材料的化学增强
    • US20140371471A1
    • 2014-12-18
    • US14370733
    • 2013-01-11
    • The Regents of the University California
    • Ting Guo
    • C07D311/12
    • C07D311/12
    • A method for dynamic enhancement of chemical reactions by nanomaterials under hard X-ray irradiation. The nanomaterials were gold and platinum nanoparticles, and the chemical reaction employed was the hydroxylation of coumarin carboxylic acid. The reaction yield was enhanced 2000 times over that predicted on the basis of the absorption of X-rays only by the nanoparticles, and the enhancement was found for the first time to depend on the X-ray dose rate. The maximum turnover frequency was measured at 116×10-4 s-1 Gy-1. We call this process chemical enhancement, which is defined as the increased yield of a chemical reaction due to the chemical properties of the added materials. The chemical enhancement described here is believed to be ubiquitous and may significantly alter the outcome of chemical reactions under X-ray irradiation with the assistance of nanomaterials.
    • 一种在硬X射线照射下由纳米材料动态增强化学反应的方法。 纳米材料是金和铂纳米颗粒,所用的化学反应是香豆素羧酸的羟基化。 基于仅通过纳米颗粒吸收X射线而预测的反应产率增加了2000倍,并且首次发现增强取决于X射线剂量率。 最大周转频率为116×10-4 s-1 Gy-1。 我们称这种过程化学增强,其定义为由于所添加的材料的化学性质引起的化学反应的增加的产率。 这里描述的化学增强被认为是普遍存在的,并且可以在纳米材料的帮助下在X射线照射下显着改变化学反应的结果。