Observation of the luminescence of singlet oxygen at λ=1270 nm under LED irradiation of CCl4

被引：14
作者：
Bagrov, I. V. [1 ,2 ]
Belousova, I. M. [1 ,3 ]
Kiselev, V. M. [1 ,2 ]
Kislyakov, I. M. [1 ,3 ]
Sosnov, E. N. [1 ,2 ]
机构：
[1] SI Vavilov State Opt Inst, Inst Laser Phys, St Petersburg 199034, Russia
[2] ZAO Lazery & Opt Sistemy, St Petersburg 199034, Russia
[3] St Petersburg State Univ Informat Technol, St Petersburg 197101, Russia
来源：
OPTICS AND SPECTROSCOPY | 2012年 / 113卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
AIR-SATURATED SOLUTIONS; MOLECULAR-OXYGEN; LASER-RADIATION; GAS-PHASE; GENERATION; EXCITATION; ABSORPTION; O-2(1-DELTA-G); PRESSURE;
D O I：
10.1134/S0030400X1207003X
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The efficiency of singlet-oxygen generation under optical pumping of oxygen dissolved in CCl4 has been analyzed using light-emitting diode arrays at three wavelengths (465, 525, and 625 nm), with direct recording of singlet-oxygen luminescence from the volume of irradiated solvent. The results obtained are compared with the efficiency of singlet-oxygen generation using C-60 dissolved in CCl4 as a photosensitizer; it is shown that the efficiencies of singlet-oxygen generation differ by four orders of magnitude (on average) for only the radiation at the input of the solvent volume under study. The quantum yield of singlet oxygen upon direct optical excitation is about unity with respect to the optical-pump radiation absorbed in the solvent volume.
引用
收藏
页码：57 / 62
页数：6
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