Facile and Rapid Visualization of Colorless Endocrine Disruptor Bisphenol A by Interfacial Charge-Transfer Transitions with TiO2 Nanoparticles
Facile and Rapid Visualization of Colorless Endocrine Disruptor Bisphenol A by Interfacial Charge-Transfer Transitions with TiO2 Nanoparticles
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DOI：
10.1002/slct.201700590
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发表时间：
2017-07-21
期刊：
影响因子：
2.1
通讯作者：
Hanaya, Minoru
中科院分区：
文献类型：
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作者：
Fujisawa, Jun-ichi;Matsumura, Shingo;Hanaya, Minoru
双酚A（BPA）是一种具有雌激素样作用的内分泌干扰物，广泛应用于聚碳酸酯和环氧树脂的生产。由于BPA是无色的材料，由于约100 μ m的宽HOMO-LUMO间隙。4.3 eV，我们不能用眼睛辨别溶解在溶液中的有毒BPA。在这里，我们报告了一种简便，快速的方法，用于可见光传感双酚A与二氧化钛纳米粒子。双酚A通过两个苯酚基团在纳米TiO 2上的化学吸附诱导了可见光区双酚A到TiO 2的界面电荷转移（ICT）跃迁。ICT转换引起可见光吸收高达约。600 nm，允许BPA的可见光传感。该方法也适用于其他含酚类内分泌干扰物。更一般地说，据我们所知，这是第一次演示基于ICT转换的无色有毒有机化合物的可见光传感。
Bisphenol A (BPA) is an estrogen-mimicking endocrine disruptor, which has been widely used in the production of polycarbonates and epoxy resins. Because BPA is a colorless material owing to the wide HOMO-LUMO gap of ca. 4.3 eV, we cannot discern toxic BPA dissolved in solution with eyes. Here, we report a facile and rapid method for visible-light sensing of BPA with TiO2 nanoparticles. The chemical adsorption of BPA on anatase TiO2 nanoparticles via the two phenol groups induces interfacial charge-transfer (ICT) transitions from BPA to TiO2 in the visible region. The ICT transitions give rise to visible-light absorption up to ca. 600 nm, allowing visible-light sensing of BPA. This method is also applicable to other phenol-containing endocrine disruptors. More generally, to our best knowledge, this is the first demonstration for visible-light sensing of colorless toxic organic compounds based on ICT transitions.