Abstract
Gold monolayer protected clusters (MPCs) exhibit strong quantum confinement effects andsize dependent electronic, optical and chemical properties. Chemical tuning ofthese properties can be achieved by established synthesis methods, providing anexcellent system for the study of the relationship between chemical and electronicstructure. In this paper, the first electronic spectra of individual Au MPCs (Au25) acquired by single electron tunneling force spectroscopy on non-conducting silicondioxide surfaces are reported. A HOMO–LUMO (highest occupied molecularorbital–lowest unoccupied molecular orbital) energy gap is observed in theAu25 spectra. Hysteretic charging of the particles is also observed while obtaining the energyspectra. The new single electron tunneling measurement methodology is described. Amodel explaining the measurements supports the existence of mid-HOMO–LUMO gapdefect states.
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.
