LAUSR

Abstract Dye fluorescence enhancement based on new carbon materials and metal nanoparticles is very important in the research of surface-enhanced fluorescence, fluorescence labeling, feature code recognition and related areas. Gold nanoparticles (AuNPs) and graphene are employed to regulate the fluorescent property of dyes in multi-layer graphene-doped polymer films. AuNPs can significantly enhance the fluorescence effect of DCJTB(C30H35N3O, Propanedinitrile, [2-(1,1-dimethylethyl)-6-[2-(2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H-benzo[ij]quinolizin-9-yl)ethenyl]-4H-pyran-4-ylidene]-), because of scattering and surface plasmon resonance (SPR). Multi-layer graphene has different influences on the dye fluorescence effect with different concentrations due to its special conductive property and energy band. The multi-layer graphene in the polymer films can influence the local plasmon resonance of AuNPs, causing the absorption, scattering of photons, or radiation self-absorption of photons, which leads to the fluorescence enhancement or quenching. This study shows the mechanism and rule of the fluorescent property regulation of the new carbon material in the graphene-doped polymer film, which could pave a way for the study of probe monitoring and stimulated radiation amplification.