Noble metal nanoparticles meet molecular cages: A tale of integration and synergy |
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| Institution: | 1. School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China;2. Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing, 100084, China;3. Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China;1. Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;1. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan;2. Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan |
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| Abstract: | Noble metal nanoparticles attract growing interest owing to their high surface-to-volume ratio and unique optical, electric and catalytic properties. Fine-tuning these properties and broadening potential applications can be envisaged if nanoparticles are coupled to supramolecular cages that afford a highly tailorable inner environment as well as rich endo-/exo-functionalization. Due to rich chemical/physical properties of cages, integration of multiple host-guest interactions in confined cavities through endo-molecular design has been achieved. Such cages provide ideal confined templates for size-controlled synthesis of ultrafine nanoparticles with superior catalytic activities. Moreover, exo-functionalization of cages offers huge opportunities to couple with nanoparticles, generating cage-nanoparticle hybrids or hierarchical assemblies that combine merits of both. The present review provides recent advances in cage-mediated nanoparticle systems with synergistic effects and integrated functions, and demonstrates their applications in catalysis, sensing, chiral amplification, plasmonic switches, imaging and cell therapy. Finally, we highlight key challenges and identify emerging directions in the coming years. |
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| Keywords: | Polyhedra cages Noble metal nanoparticles Host-guest chemistry Plasmonic effect Function integration |
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