Abstract
This paper reports the fabrication of highly stable semi-hollow gold-silver nanostars (hAuAgNSts). Galvanic replacement between silver nanostars (AgNSts) and chloroauric acid afforded optically tunable hAuAgNSts with plasmonic resonances ranging from UV to visible to near-infrared wavelengths. Moreover, the compositionally unique bimetallic hAuAgNSts exhibited strong extinction maxima in the UV–vis range, which contrasts AgNSts (centered in the UV) and the more common gold nanostars (AuNSts; centered largely in the near infrared). Notably, the hAuAgNSts exhibited enhanced thermal and colloidal stability without the need for surface modification when compared to AgNSts and AuNSts. This latter feature offers additional opportunities in the fields of photocatalysis and photovoltaics as well as alternative strategies for post-synthetic modification that enable applications in biosensing and theranostics.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
