METHOD FOR PREPARATION OF SILVER COLLOIDAL PARTICLE LAYERS ONTO GLASS SUBSTRATE FOR SURFACE ENHANCED RAMAN SPECTROSCOPY, SUBSTRATE AND USE THEREOF

摘要

The invention provides a method for preparation of layers of silver colloidal particles deposited on glass substrates for surface enhance Raman spectroscopy, wherein a solution consisting of solvent, a soluble silver salt, ammonia, and a reducing agent is exposed to ultrasound irradiation in the presence of the glass substrate, thereby forming silver colloidal particle layer on glass substrate. The invention further provides glass substrate with layer of silver colloidal particles obtainable by said process and its use for surface enhanced Raman spectroscopy with wide range of laser wavelengths used for excitation.