Attempt for detecting reaction intermediate with a low concentration by Raman spectroscopy

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13628
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Gakushuin University
• Principal Investigator: Iwata Koichi 学習院大学, 理学部, 教授 (90232678)
• Research Collaborator: ONO Junpei ; ISHIBASHI Genki ; TOKITA Tsukasa
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: ラマン分光法 / 反応中間体 / 時間分解測定

Outline of Final Research Achievements

We try to observe time-resolved Raman spectra of chemical reaction intermediates having a low concentration. We photoexcited trans-4-hydroxystilbene in methanol and recorded its time-resolved Raman spectra with the presence of silver colloids. The intensity of the Raman bands of trans-4-hydroxystilbene in the electronically excited state is increased approximately by a factor of two compared with the intensity of the Raman bands measured without the silver colloids. We have demonstrated that the detection of a chemical reaction intermediate by time-resolved Raman spectroscopy with surface enhancement is possible.

Free Research Field

分光物理化学