Xie Mingxuan, Xu Fugui, Zhang Luzhi, Yin Jie, Jiang Xuesong
State Key Laboratory for Metal Matrix Composite Materials, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
School of Physical Science and Technology, Shanghai Tech, Shanghai 201210, People's Republic of China.
ACS Macro Lett. 2018 May 15;7(5):540-545. doi: 10.1021/acsmacrolett.8b00211. Epub 2018 Apr 16.
The reversible surface patterns with fluorescence and topography can possibly enable information recording and reading and provide an important alternative to realize the higher information security. We demonstrated a reversible dual-pattern with simultaneously responsive fluorescence and topography using an anthracene (AN) and naphthalene diimide (NDI) containing copolymer (PAN-NDI-BA) as the skin layer, in which the reversible photodimerization of AN can simultaneously control the cross-linking and CT interaction between AN and NDI. Upon irradiation with UV light and thermal treatment, the resulting pattern assumes a reversible change between smooth and wrinkled states, and its fluorescence changes reversibly from red to white to blue-green. The smart surfaces with dynamic hierarchical wrinkles and fluorescence were achieved by selective irradiation with photomasks and can be employed for potential applications in smart displays and anticounterfeiting.
具有荧光和形貌的可逆表面图案可能实现信息记录和读取，并为实现更高的信息安全提供重要的替代方案。我们展示了一种可逆双图案，使用含蒽（AN）和萘二亚胺（NDI）的共聚物（PAN-NDI-BA）作为表层，同时具有响应性荧光和形貌，其中AN的可逆光二聚化可同时控制AN与NDI之间的交联和电荷转移相互作用。经紫外线照射和热处理后，所得图案在光滑和褶皱状态之间呈现可逆变化，其荧光从红色到白色再到蓝绿色可逆变化。通过用光刻掩模进行选择性照射，实现了具有动态分层皱纹和荧光的智能表面，可用于智能显示器和防伪等潜在应用。
