PHOTOTHERMAL INVESTIGATION OF THE TRIPLET-STATE OF C60

被引：162

作者：

TERAZIMA, M ^{[1
]}

HIROTA, N ^{[1
]}

SHINOHARA, H ^{[1
]}

SAITO, Y ^{[1
]}

机构：

[1] MIE UNIV,DEPT CHEM MAT,TSU,MIE 514,JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 23期

关键词：

D O I：

10.1021/j100176a013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photophysical properties of the triplet state of C60 (buckminsterfullerene) are investigated by photothermal techniques: thermal lens (TL), transient grating (TG), and photoacoustic (PA) methods. The quantum yield of singlet oxygen formation (PHI-DELTA) by the quenching of the triplet state of C60 is measured by the time-resolved TL method. The value of PHI-DELTA is nearly unity and independent of the excitation wavelength. The time dependence of the TL and TG signals does not show expected slow-rising components. This peculiar behavior can be explained in terms of a strong T-T absorption at the He-Ne laser wavelength. By using the PA method, the energy of the triplet state is determined to be 13 100 +/- 300 cm-1.

引用

页码：9080 / 9085

页数：6

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