Crystallization-driven Nanoparticle Crystalsomes
Lingfeng Gao 1, 2 , Shan Mei 2 , Qian Qian 2 , Shichen Yu 2 , Bin Zhao 3 , Yingfeng Tu 1, *（屠迎锋） , Christopher Y Li 2, *
1 Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, China.
2 Department of Materials Science and Engineering, Drexel University, USA.
3 Department of Chemistry, University of Tennessee, USA.
Angew. Chem. Int. Ed. 2023, 62, e202217267
Nanoparticle (NP) assembly has been extensively studied, and a library of NP superstructures has been synthesized. These intricate structures show unique collective optical, electronic, and magnetic properties. In this work, we report a bottom-up approach for fabricating spherical gold nanoparticle (AuNP) assemblies that mimic colloidosomes. Co-crystallization of lipoic acidend- functionalized poly(ethylene oxide) (PEO) and AuNPs in solution via a self-seeding method led to the formation of hollow spherical NP assemblies named nanoparticle crystalsomes (NPCs). Due to the spherical shape, the translational symmetry of PEO crystals is broken in NPCs, which can be attributed to the competition between NP close packing and polymer crystallization. This was confirmed by tuning the NPC morphology via varying the self-seeding temperature, crystallization temperature, and PEO molecular weight. We envisage that this strategy paves the way to attaining exquisite morphological control of NP assemblies with broken translational symmetry.
链接：//onlinelibrary.wiley.com/doi/10.1002/anie.202217267
