Tunable Synthesis of Sub-20 nm Gold Nanoparticles Capping with Cyclodextrin for Host-Guest Molecular Recognition on Nano-Surface

Gold nanoparticles capping with three types of natural cyclodextrins are synthesized, allowing for precise control over their sizes ranging from 9 to 20 nm. These nanoparticles exhibit remarkable colloidal stability during long-term storage, as well as excellent tolerance to saline, acidic, and alkaline conditions. Importantly, the assembly of nanoparticles is performed by using the silica nanospheres functionalized with cinnamyl group and the gold nanoparticle capping with three types of cyclodextrin, highlighting the selective formation of core-satellite superstructure based on the host-guest molecular recognition on nano-surface between different nanoparticles.

Automated summary

Gold nanoparticles capped with three types of natural cyclodextrins were successfully synthesized, allowing for precise control over their sizes ranging from 9 to 20 nm. These nanoparticles demonstrated excellent colloidal stability during long-term storage and showed remarkable tolerance to saline, acidic, and alkaline conditions. Importantly, the assembly of nanoparticles was achieved by using silica nanospheres functionalized with cinnamyl group and gold nanoparticles capped with three types of cyclodextrin, highlighting the selective formation of core-satellite superstructure based on host-guest molecular recognition on the nano-surface between different nanoparticles.