Light Controlled 3D Crystal Morphology for Droplet Evaporative Crystallization on Photosensitive Hydrophobic Substrate,The Journal of Physical Chemistry Letters

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Light Controlled 3D Crystal Morphology for Droplet Evaporative Crystallization on Photosensitive Hydrophobic Substrate
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2022-06-22 , DOI: 10.1021/acs.jpclett.2c01698
Haonan Li _{1,

2} , Rong Chen _{1,

2} , Xun Zhu _{1,

2} , Dingding Ye _{1,

2} , Yang Yang _{1,

2} , Wei Li _{1,

2} , Dongliang Li _{1,

2} , Qiang Liao _{1,

2}

Affiliation

Controlling crystal morphology is crucial in analytical chemistry and smart materials synthesis, etc. However, flexible manipulation of 3D crystal morphology still remains challenging. Herein, we present a novel and facile light strategy for droplet evaporative crystallization to manipulate macroscopic crystal morphology on photosensitive hydrophobic substrate possessing photothermal conversion property. We demonstrate that the spherical coronal shell and alms bowl-like crystal skeletons can be achieved on smooth photosensitive hydrophobic substrate, depending on the salt concentration. Rough photosensitive hydrophobic substrate further creates a bubble-assisted light strategy, by which a cylindrical shell-like crystal skeleton with a directionally controllable cavity is achieved. Amazingly, the proper additive endows droplet evaporative crystallization to form a closed crystal skeleton with the solution wrapped inside. The present study provides new ideas for designing a novel optical droplet microfluidic platform for controlling crystal morphology.

中文翻译：

用于光敏疏水基板上液滴蒸发结晶的光控 3D 晶体形态

控制晶体形态在分析化学和智能材料合成等方面至关重要。然而，灵活操纵 3D 晶体形态仍然具有挑战性。在此，我们提出了一种新颖且简便的光策略，用于液滴蒸发结晶，以控制具有光热转换特性的光敏疏水基板上的宏观晶体形态。我们证明了球形冠状壳和alms碗状晶体骨架可以在光滑的光敏疏水基板上实现，具体取决于盐浓度。粗糙的光敏疏水基板进一步创造了气泡辅助光策略，从而实现了具有方向可控腔的圆柱形壳状晶体骨架。令人惊讶的是，适当的添加剂使液滴蒸发结晶形成封闭的晶体骨架，溶液包裹在里面。本研究为设计用于控制晶体形态的新型光学液滴微流控平台提供了新思路。

更新日期：2022-06-22

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