Enhancing carbon dots fluorescence via plasmonic resonance energy transfer

Using plasmonic interactions to engineer optical properties at the nanoscale is an important challenge of current photonics. Here we establish a general strategy enhance orange emission carbon dots by coupling them gold nanoparticles through polymeric spacer in solution. We exploit overlap between surface plasmon resonance and electronic transitions achieve fivefold increase their fluorescence region, which usually very weak. demonstrate that this enhancement stems from ultrafast energy transfer coherent state nanoantenna coupled dot. Our study advances understanding fundamental fluorescent nanomaterials. Furthermore, results contribute address pressing field dots, promising significant impact on technological use optoelectronics bioimaging.