HIGHER YIELD OF PHOTOREDUCTION FROM EU3+ TO EU2+ WITH SHORTER WAVELENGTH IRRADIATION

被引：38

作者：

KUSABA, M

NAKASHIMA, N

KAWAMURA, W

IZAWA, Y

YAMANAKA, C

机构：

[1] MITSUBISHI HEAVY IND CO LTD,TAKASAGO RES & DEV CTR,CHEM LAB,TAKASAGO,HYOGO 676,JAPAN

[2] INST LASER TECHNOL,SUITA,OSAKA 565,JAPAN

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 197卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(92)86035-G

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：

We have found that the photoreduction yield from Eu3+ to Eu2+ depends on excitation wavelength within a single charge-transfer band. The quantum-yields phi were 0.12+/-0.02 (at 193 nm) and 0.06+/-0.01 (at 222 nm) in aqueous solution. and 0.42+/-0.07 (at 222 nm ) and 0.35+/-0.06 (at 248 nm) in methanol solution, The escape probability of Eu2+ from the photochemically prepared geminate pair is suggested to be higher with shorter-wavelength excitation.

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页码：136 / 140

页数：5

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