Double‐Layered Plasmonic–Magnetic Vesicles by Self‐Assembly of Janus Amphiphilic Gold–Iron(II, III) Oxide Nanoparticles. Issue 28 (8th June 2017)

• Record Type: Journal Article
• Authors: Song, Jibin; Wu, Binghui; Zhou, Zijian; Zhu, Guizhi; Liu, Yijing; Yang, Zhen; Lin, Lisen; Yu, Guocan; Zhang, Fuwu; Zhang, Guofeng; Duan, Hongwei; Stucky, Galen D.; Chen, Xiaoyuan
• Is Part Of: Angewandte Chemie international edition. Volume 56:Issue 28(2017)
• Page Start: 8110
• Page End: 8114
• Publication Date: 2017-06-08
• Subjects: amphiphilic polymers -- imaging -- Janus nanoparticles -- self-assembly -- vesicles; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201702572
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Janus nanoparticles (JNPs) offer unique features, including the precisely controlled distribution of compositions, surface charges, dipole moments, modular and combined functionalities, which enable excellent applications that are unavailable to their symmetrical counterparts. Assemblies of NPs exhibit coupled optical, electronic and magnetic properties that are different from single NPs. Herein, we report a new class of double‐layered plasmonic–magnetic vesicle assembled from Janus amphiphilic Au‐Fe3 O4 NPs grafted with polymer brushes of different hydrophilicity on Au and Fe3 O4 surfaces separately. Like liposomes, the vesicle shell is composed of two layers of Au‐Fe3 O4 NPs in opposite direction, and the orientation of Au or Fe3 O4 in the shell can be well controlled by exploiting the amphiphilic property of the two types of polymers. Abstract : Double‐layered plasmonic–magnetic vesicles were prepared by self‐assembly of Janus Au‐Fe3 O4 nanoparticles. The nanoparticles were grafted with amphiphilic polymer brushes of different hydrophilicity on Au and Fe3 O4 surfaces separately.