Multi-Responsive Wrinkling Patterns by the Photoswitchable Supramolecular Network,ACS Macro Letters

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Multi-Responsive Wrinkling Patterns by the Photoswitchable Supramolecular Network
ACS Macro Letters ( IF 5.1 ) Pub Date : 2017-07-25 00:00:00 , DOI: 10.1021/acsmacrolett.7b00424
Fudong Li ₁ , Honghao Hou ₁ , Jie Yin ₁ , Xuesong Jiang ₁

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Multiresponsive reversible wrinkling patterns provide an effective approach to dynamically tuning the properties of surface on-demand to realize a smart surface; however, their fabrication remains challenging. In this study, we report a simple yet robust method to fabricate multiresponsive wrinkles based on a supramolecular polymer network composed of copolymer (P4VP-PS-PnBA) and carboxyl containing anthracene (AN-COOH), which can be cross-linked dynamically through reversible photodimerization of anthracene (AN) and the hydrogen bond between carboxyl and pyridine groups. The wrinkle pattern can be generated and erased selectively by UV radiation of different wavelengths due to reversible dimerization of AN. The resulting wrinkles have an extremely sensitive response to hydrogen chloride (HCl) gas and can be erased by HCl with a concentration of 5 ppm in the atmosphere. The generation/elimination process responsive to light and HCl could be cycled many times without damaging characteristic wrinkles, which enables this dynamic wrinkle pattern to be employed for such potential applications as smart displays and nonink printing.

中文翻译：

光开关超分子网络的多响应起皱模式

多响应可逆起皱纹提供了一种有效的方法，可以按需动态调整表面的特性，以实现智能表面；然而，它们的制造仍然具有挑战性。在这项研究中，我们报告了一种简单而稳健的方法，该方法基于由共聚物（P4VP-PS-PnBA）和含羧基蒽（AN-COOH）组成的超分子聚合物网络制造，该网络可以通过可逆性动态交联蒽（AN）的光二聚化以及羧基和吡啶基团之间的氢键。由于AN的可逆二聚化，可以通过不同波长的紫外线辐射选择性地产生和消除皱纹。产生的皱纹对氯化氢（HCl）气体具有极其敏感的响应，并且可以通过浓度为5 ppm的HCl在大气中消除。响应光和HCl的生成/消除过程可以循环多次，而不会损坏特征性的褶皱，这使得该动态褶皱图案可用于诸如智能显示器和非墨水印刷等潜在应用。

更新日期：2017-07-25

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