Oscillatory Light‐Emitting Biopolymer Based Janus Microswimmers,Advanced Materials Interfaces

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Oscillatory Light‐Emitting Biopolymer Based Janus Microswimmers
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-03-11 , DOI: 10.1002/admi.201902094
Roberto María‐Hormigos ₁ , Alberto Escarpa ₁ , Bertrand Goudeau ₂ , Valérie Ravaine ₂ , Adeline Perro ₂ , Alexander Kuhn ₂

Affiliation

Janus particles with a double functionality are synthesized by asymmetric loading of alginate hydrogel beads with Prussian Blue, leading to microswimmers with an original dynamic oscillatory behavior coupled to chemical light emission. This phenomenon results from the combination of two features: 1) Prussian Blue in the gel acts as a catalyst and enables concomitant light emission and oxygen production in the presence of luminol and hydrogen peroxide; 2) the hydrogel particle has a differential porosity distribution, leading to an asymmetric release of oxygen bubbles propelling the particle. The synthesis of these functional materials is achieved using an electric field based symmetry breaking approach with ionically cross‐linked alginate beads and can be applied to a wide range of particle sizes. Such light‐emitting swimmers open up interesting perspectives for the elaboration of autonomous dynamic chemical systems.

中文翻译：

基于振荡发光的生物聚合物的Janus微游泳器

通过普鲁士蓝对藻酸盐水凝胶珠的不对称负载来合成具有双重功能的Janus颗粒，从而产生具有原始动态振荡行为并耦合化学发光的微游泳器。这种现象是由以下两个特征共同导致的：1）凝胶中的普鲁士蓝充当催化剂，并在存在鲁米诺和过氧化氢的情况下能够伴随发光和氧气产生；2）水凝胶颗粒具有不同的孔隙率分布，导致推动颗粒的氧气气泡不对称释放。这些功能材料的合成是通过使用基于电场的对称破坏方法和离子交联的藻酸盐微珠实现的，可应用于各种粒径。

更新日期：2020-03-11

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