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Citation: Lu Xue-Fang, Zhang Hai-Rong, Li Yi, Liu Jing, Yang Guo-Qiang. Luminescence Properties and Crystal Structure of Two Metal 8-hydroxyquinoline Complexes at High Pressure[J]. Acta Physico-Chimica Sinica, ;2001, 17(10): 898-903. doi: 10.3866/PKU.WHXB20011007 shu

Luminescence Properties and Crystal Structure of Two Metal 8-hydroxyquinoline Complexes at High Pressure

1.
Laboratory of Photochemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing　100080;Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing　100101;Beijing Synchrotron Radiation Facility,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing　100039;Beijing Center for High Pressure Sciences,Chinese Academy of Sciences,Beijing　100080

Received Date: 5 April 2001
Available Online: 15 October 2001

The fluorescence emission and Xray diffraction of two metal (Ca2＋ and Zn2＋) 8hydroxyquinoline complexes (Caq2 and Znq2) have been measured at high pressure. It has been found that pressure can influence the emission dramatically. With increase of pressure Caq2 gives increasing of its emission within 3 GPa and drops quickly when the pressure gets higher. At about 7 GPa it shows almost no emission at all. The emission of Znq2 decreases gradually with increase of the pressure. The emission intensity is about 10％ of its original when the pressure gets 7 GPa. The result of in situ Xray diffraction of Caq2 indicates that at about 3～4 GPa it starts a phase transition to amorphous and this transition completes at 7 GPa. All of the diffraction peaks has disappeared at this pressure. Znq2,however,gives no significant phase transition up to 16 GPa according to its in situ Xray diffraction result at pressure.
- High pressure;Metal 8-hydroxyquinoline complexes;Fluorescence emission;Crystal structure
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