Caking‐Inspired Cold Sintering of Plastic Supramolecular Films as Multifunctional Platforms,Advanced Functional Materials

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Caking‐Inspired Cold Sintering of Plastic Supramolecular Films as Multifunctional Platforms
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-07-12 , DOI: 10.1002/adfm.201803370
Mengqi Xie ₁ , Yuxuan Che ₁ , Kaerdun Liu ₁ , Lingxiang Jiang ₂ , Limin Xu ₁ , Rongrong Xue ₁ , Markus Drechsler ₃ , Jianbin Huang ₁ , Ben Zhong Tang ₄ , Yun Yan ₁

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Caking of powder materials is undesired in various industries, and for thousands of years people are fighting against caking. Herein, the principle of caking is employed to create macroscopic plastic supramolecular films through a cold sintering process. A nanometer‐sized, irregular coordinating cluster is first generated with a bulky head surfactant and multifunctional ligand, and the addition of metal ions immediately leads to amorphous white precipitates. Upon adsorbing moisture, a rearrangement of the molecules in the precipitates results in cold sintering, so that the particles in the precipitates grow into a transparent macroscopic film. The mechanical strength of the film is comparable to plastics, but allows welding and molding with finger at ambient temperature in moist environment. Mechanical tests suggest the supramolecular plastic does not fatigue even after several tens circles' remolding, indicating their superior material engineering capability. This strategy can be extended to different chemistries to fabricate films with different mechanical strength. Various functional components can be doped into the resultant films, rendering them a platform toward multifunctional materials, such as luminescent devices or sensors for pollution gases. The current strategy opens up a new vista in material science is expected.

中文翻译：

粘结的塑料超分子薄膜作为多功能平台的冷烧结

粉末材料的结块在各个行业中都是不期望的，并且数千年来人们一直在与结块作斗争。本文中，结块的原理用于通过冷烧结过程产生宏观的塑料超分子膜。首先使用庞大的头部表面活性剂和多功能配体生成纳米级的不规则配位簇，添加金属离子会立即导致无定形白色沉淀。吸附水分后，沉淀物中分子的重排导致冷烧结，从而沉淀物中的颗粒长成透明的宏观膜。薄膜的机械强度可与塑料媲美，但可以在潮湿环境中在室温下用手指进行焊接和成型。力学测试表明，即使经过数十次重塑，超分子塑料也不会疲劳，这表明它们具有出色的材料工程能力。该策略可以扩展到不同的化学方法，以制造具有不同机械强度的薄膜。可以将各种功能组件掺杂到最终的薄膜中，使它们成为多功能材料的平台，例如发光器件或污染气体传感器。当前的战略为材料科学开辟了新的前景。使它们成为多功能材料的平台，例如发光器件或污染气体传感器。当前的战略为材料科学开辟了新的前景。使它们成为多功能材料的平台，例如发光器件或污染气体传感器。当前的战略为材料科学开辟了新的前景。

更新日期：2018-07-12

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