Core-Shell Raman Nanoparticles With Uniform SERS Hot Spots

The patent changes the chemical parameters of the self-assembled monolayer by specifying particular Raman reporter molecules with defined chemical structures (Formula 1 and Formula 2). This standardization of chemical parameters ensures consistent Raman signal enhancement while improving manufacturing precision through controlled chemical assembly processes that produce uniform nanoparticle shapes.

The patent employs a composite core-shell structure combining a metal core with a self-assembled monolayer shell containing Raman reporter molecules. This composite structure integrates the plasmonic properties of the metal core for signal enhancement with the molecular precision of the organized monolayer shell, achieving both high Raman activity and manufacturing reproducibility.

The self-assembled monolayer structure performs multiple functions automatically: the Raman reporter molecules provide detection capability, the organized monolayer ensures uniform spacing and orientation, and the chemical assembly process self-organizes without external intervention. This self-service approach eliminates the need for complex post-treatment processes while maintaining high detection reliability and enabling straightforward mass production.

The patent incorporates the Raman reporter molecules directly into the self-assembled monolayer during the nanoparticle formation process, rather than adding them later. This preliminary action ensures uniform distribution and proper orientation of the reporters before final particle assembly, achieving reliable detection capability without requiring subsequent treatment steps.