Comparative study of fluorescence core-shell nanotags with different morphology of gold core.

The development of compact and highly active plasmonic nanotags tuned on the first transparency window of biological tissues is under demand for cell imaging applications. The optical activity of bare plasmonic nanoparticles is determined by morphology but the more complex core-shell systems require experimental verification as a shell may change the expected trends. A comparative study of fluorescence core-shell nanotags with different morphology of gold core is presented in this work.