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Updated: Jun 10, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Study on the resonance Raman scattering properties of beta-carotene incorporated into SBA-15
Shishi Tan1, Guannan Zhang, Aiguo Shen
1Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
Abstract:
In this study, beta-carotene, a resonance Raman active substance, was introduced into the large pore channel of rod-like SBA-15 for the first time. This novel resonance Raman active material has been characterized by small angle X-ray scattering (SAXS) and Brunauer-Emmett-Teller (BET) surface area analysis. The adsorption process did not show any influence on the microstructure of SBA-15 as well as its physicochemical characters. Excited by 514.5 nm laser, the resonance Raman signals of the products were demonstrated as well-defined Raman peaks at 1009, 1158 and 1514 cm(-1), which should be assigned to the methyl rock (C-CH(3)), carbon single-bond stretch (C-C) and carbon double-bond stretch (C=C) normal modes, respectively. In addition, the internal standard method was utilized by resonance Raman spectroscopy to determine the adsorption capacity of mesoporous silicas for beta-carotene using the results of UV-vis spectroscopy as a reference.
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