TY - JOUR
T1 - Observation of two-spin controlling of a radical pair by pulsed irradiation of microwave monitored by absorption detected magnetic resonance
AU - Araki, Yasuyuki
AU - Maeda, Kiminori
AU - Murai, Hisao
N1 - Funding Information:
Authors are grateful to Prof. T. Azumi for his interest and discussion. Authors are also grateful to Dr. H. Yashiro for his efforts of instrumental improvement and discussion. This work was supported by grant-in-aid on Priority-Area-Research on `Photochemical Dynamics' (08218205) and grant-in-aid for Development Scientific Research (08740437 and 10440164) from the Ministry of Education, Science, Sports, and Culture of Japan.
PY - 2000/12/29
Y1 - 2000/12/29
N2 - A transient absorption detected magnetic resonance technique is used to explore the electron spin nutation in a polymethylene-linked biradical system under a strong electromagnetic field (B1). The application of pulsed microwave with the duration successively incremented to the EPR spectral center shows a double frequency oscillation of the absorbance signal along with the principal single one due to one electron spin nutation (ω1 = gμBB1/ℏ). The former signal is explained by simultaneous strong microwave irradiation to two spins in the biradical. This is the first observation of a 2ω1 spin-nutation signal by monitoring the chemical reaction change of a transient biradical.
AB - A transient absorption detected magnetic resonance technique is used to explore the electron spin nutation in a polymethylene-linked biradical system under a strong electromagnetic field (B1). The application of pulsed microwave with the duration successively incremented to the EPR spectral center shows a double frequency oscillation of the absorbance signal along with the principal single one due to one electron spin nutation (ω1 = gμBB1/ℏ). The former signal is explained by simultaneous strong microwave irradiation to two spins in the biradical. This is the first observation of a 2ω1 spin-nutation signal by monitoring the chemical reaction change of a transient biradical.
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U2 - 10.1016/S0009-2614(00)01291-4
DO - 10.1016/S0009-2614(00)01291-4
M3 - Article
AN - SCOPUS:0034731189
VL - 332
SP - 515
EP - 520
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 5-6
ER -