Es Sayed Julien, Lorthioir Cédric, Banet Philippe, Perrin Patrick, Sanson Nicolas
Soft Matter Sciences and Engineering, ESPCI, PSL University, Sorbonne Université, CNRS, 10 rue Vauquelin, 75231, Paris Cedex 05, France.
Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Université, CNRS, Collège de France, 4 Place Jussieu, 75005, Paris Cedex 05, France.
Angew Chem Int Ed Engl. 2020 Apr 27;59(18):7042-7048. doi: 10.1002/anie.201915737. Epub 2020 Mar 11.
The combination of supramolecular chemistry and soft colloids as microgels represents an ambitious way to develop multi-versatile colloidal assemblies. Hereafter, terpyridine-functionalized poly(N-isopropylacrylamide) (PNiPAM) microgel building blocks are shown to undergo an assemble-freeze-disassemble process. The microgel assemblies, which are controlled by monitoring the attractive and repulsive potentials between the soft colloidal particles, are then frozen by forming inter-particle metal-terpyridine bis-complexes upon addition of the metallic cation (such as Fe , Co ). By oxidation of the metal-terpyridine bis-complex links, the aggregates open up, which is due to the complex dissociation releasing the connected particles in the form of single microgels. We extended our work to the development of 1D filaments and 2D membranes materials made of soft particles connected via supramolecular chemistry.
超分子化学与作为微凝胶的软胶体相结合，是开发多功能胶体组装体的一种宏大方式。在此，吡啶三联体功能化的聚（N-异丙基丙烯酰胺）（PNiPAM）微凝胶构建块展示出经历一个组装-冷冻-拆解过程。通过监测软胶体颗粒之间的吸引和排斥势来控制的微凝胶组装体，在加入金属阳离子（如Fe、Co）后通过形成颗粒间金属-吡啶三联体双络合物而被冷冻。通过金属-吡啶三联体双络合物连接的氧化，聚集体会散开，这是由于络合物解离以单个微凝胶的形式释放出相连的颗粒。我们将工作扩展到由通过超分子化学连接的软颗粒制成的一维长丝和二维膜材料的开发。
