Abstract
In this work, the graphene quantum dots (GQDsx, x = 1, 2 and 3) with various surface states were synthesized. Subsequently, GQDsx were facially assembled with glycine derivative (G6) and gold nanoparticles (AuNPs), and novel AuNPs/G6/GQDsx composites were achieved. Furthermore, the fluorescence and SERS results showed the strong dependence on the surface state of GQDs excluding the quantum size effects, which demonstrated the close relationship between the energy transfer efficiency of photoexcited GQDsx and AuNPs. In addition, in comparision with the crystal violet (CV)’ SERS response on GQDsx and AuNPs/G6/GQDsx substrate, it was indicated that the electromagnetic fields effect of AuNPs/G6/GQDsx was also closely related to the surafce state of GQDs. Moreover, the synergetic effect of AuNPs with GQDsx was beneficial to improve the SERS response of AuNPs/G6/GQDsx substrate.
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.
