Near-Infrared Light-Triggered Enantioselective Photopolymerization of Polydiacetylene Films Assisted by Ag and NaYF4 Nanoparticles
Near-Infrared Light-Triggered Enantioselective Photopolymerization of Polydiacetylene Films Assisted by Ag and NaYF4 Nanoparticles
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Ag 和 NaYF4 纳米粒子辅助的近红外光触发聚二乙炔薄膜的对映选择性光聚合
DOI：
10.1021/acsanm.1c00644
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发表时间：
2021-04
影响因子：
5.9
通讯作者：
Zou Gang
中科院分区：
文献类型：
--
作者：
Xie Yifan;Feng Zeyu;Zhang Chutian;Tang Xi;Lu Fengya;Wang Xiangnan;Zhang Hongli;He Chenlu;Li Jiahe;Huang Yu;Zhang Douguo;Chen Xin;Zou Gang
近年来，近红外（NIR）光引发的光化学反应由于其在太阳能驱动的化学和生物医学应用中的潜力而受到特别关注。然而，用普通近红外光引发的不对称聚合很少有报道。在此，我们提出了一个例子，近红外光触发的对映选择性光聚合反应，其中NaYF4纳米荧光粉被用作天线和手性银纳米粒子（AgNPs）作为对称性破缺的来源。反应产物是具有高光学活性和手性荧光的聚二乙炔（PDA）膜。螺旋PDA链的优选螺旋方向可以通过操纵AgNPs的光学活性来容易地控制。在对映选择性光聚合反应动力学的基础上，提出了基于电磁场增强效应的解释：手性AgNP附近的上转换发射和增强的电磁场之间的共振，对映选择性和光聚合反应的反应性都有好处。这些发现证明了近红外光谱的有效性，与援助的NaYF4和手性AgNPs，引发对映体选择性的光化学反应，通常只响应于紫外线照射。这种系统有可能扩展到生命系统和太阳能驱动的化学。
Recently, near-infrared (NIR) light-triggered photochemical reactions have been of particular interest owing to their potential in solar-driven chemistry and biomedical applications. However, asymmetric polymerization triggered with normal NIR light has rarely been reported. Herein, we present an example of NIR light-triggered enantioselective photopolymerization reactions, in which NaYF4nanophosphors were utilized as the antenna and chiral silver nanoparticles (AgNPs) as the source of symmetry breaking. The reaction product is a polydiacetylene (PDA) film with high optical activity and chiral fluorescence. The preferred screw direction of helical PDA chains can be easily controlled by manipulating the optical activity of AgNPs. On the basis of the kinetics of enantioselective photopolymerization, an explanation based on the electromagnetic field enhancement effect is proposed: both enantioselectivity and reactivity of the photopolymerization reactions should benefit from resonance between the upconverted emission and the enhanced electromagnetic field near chiral AgNPs. These findings demonstrated the effectiveness of NIR, with assistance of NaYF4and chiral AgNPs, to trigger enantioselective photochemical reactions that normally respond to UV irradiation only. Such systems are potentially extendable to living systems and solar-driven chemistry.
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影响因子：
15
作者：
Kawasaki, T;Sato, M;Soai, K
通讯作者：
Soai, K
用于对映选择性光聚合的连续放大圆偏振紫外发光
影响因子：
16.6
作者：
Han D;Yang X;Han J;Zhou J;Jiao T;Duan P
通讯作者：
Duan P
影响因子：
1.8
作者：
Qiong Zhang;Liang Zhao
通讯作者：
Qiong Zhang;Liang Zhao
影响因子：
--
作者：
Zilong Wu;Kenward Jung;C. Boyer
通讯作者：
Zilong Wu;Kenward Jung;C. Boyer
影响因子：
64.8
作者：
Hoelzl-Hobmeier, Alena;Bauer, Andreas;Bach, Thorsten
通讯作者：
Bach, Thorsten