Method for synthesizing frame nanoparticle having porous structure, and surface-enhanced raman scattering analysis method using same

A method for making a frame-structured nanoparticle of porous-structured, the method comprising:

• 1) preparing a ring-like shaped frame comprising a nano-sized internal ring frame and a gold nanoparticle external frame, the nano-sized internal ring frame comprises platinum, and wherein the gold nanoparticle external frame surrounds the nano-sized internal ring frame;
• 2) depositing silver on the ring-like shaped frame;
• and
• 3) after the depositing silver, performing a galvanic substitution reaction such that the deposited silver is substituted, forming a gold nanoparticle external frame of porous-structured,
• wherein the silver deposition step of step 2) comprises one step selected from the following i) to iii):
• i) depositing silver on a surface of the ring-like shaped frame in order that silver is deposited in a concentric manner on the ring-like shaped frame;
• ii) depositing silver in a concentric manner on the ring-like shaped frame such that a surface of the ring-like shaped frame is surrounded by silver;
• and after depositing silver in a concentric manner, depositing silver in an eccentric manner such that inner space of the ring-like shaped frame is deposited by silver;
• or
• iii) depositing silver in an eccentric manner on the ring-like shaped frame such that the silver is deposited on inner space of the ring-like shaped frame,
• in the case of step ii), the substitution step of step 3) is to perform a galvanic substitution reaction after depositing silver in an eccentric manner.