122nd General Meeting of the KCS

Type Poster Presentation
Area Analytical Chemistry
Room No. Grand Ballroom
Time 10월 19일 (금요일) 11:00~12:30
Code ANAL.P-372
Subject Resonance Raman Analysis of Korean Traditional & Modern Pigment
Authors Chang Hyun Bae, Subeen Park, Gyuho Kim 1, Chan Ryang Park2,*, Hyung Min Kim*
Department of Bionano Chemistry, Kookmin University, Korea
1Cultural Heritage Conservation Science, Kongju National University, Korea
2Department of Chemistry, Kookmin University, Korea
Abstract In the analysis of art and cultural heritage, methods that do not directly damage the analyte are needed. Raman spectroscopy, which analyze the molecular vibration information by investigating the inelastic scattering light generated by the laser irradiated on the analyte, can find the molecular composition, physical structure and chemical bonding of the analyte. With this property, Raman spectroscopy is a non-destructive and effective spectroscopic instrument when examining the chemical composition of the analyte. . However, strong fluorescence of pigments interferes with the measurement of weak Raman signals. By using multiple wavelength lasers in Resonance Raman scattering (RRS), we could increase the efficiency of Raman signal while reducing the fluorescence of Korean pigments. Depending on the electronic state of the pigment, the specific excitation wavelength not only suppresses fluorescence but also increases the Raman signal (RRS). Therefore, selection of the excitation wavelength is the most basic step in the Raman analysis of art and archeology, and the next step is to consider the color, chemical structure, and resonance Raman scattering efficiency. In this research, we investigated the electronic absorption / emission spectrum and Raman spectrum of various traditions and modern Korean pigments. Resonance and non-resonance Raman spectra were obtained at six excitation wavelengths whose intensities were inferred from the state of the electrons. And we are currently building a library matching algorithm based on multicolor Raman spectroscopy library of Korean pigment, chemical measurement and machine learning.
E-mail anjsidlrh@naver.com