PHOTOBLEACHING OF XANTHENE DYES IN A POLY(VINYL ALCOHOL) MATRIX

被引：18

作者：

MANIVANNAN, G ^{[1
]}

LECLERE, P ^{[1
]}

SEMAL, S ^{[1
]}

CHANGKAKOTI, R ^{[1
]}

RENOTTE, Y ^{[1
]}

LION, Y ^{[1
]}

LESSARD, RA ^{[1
]}

机构：

[1] UNIV LIEGE,INST PHYS,HOLOLAB,B-4000 SART 1,BELGIUM

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1994年 / 58卷 / 01期

关键词：

D O I：

10.1007/BF01081717

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photobleaching of three different xanthene dyes namely, Erythrosin B (ERB), Eosin Y (EOY) and Rose Bengal (ROB) in Poly(Vinyl Alcohol) (PVA) matrix has been studied. Quantum yield values of photobleaching using an argon-ion laser (514.5 nm) were determined in presence of an electron donor (TriEthAnolamine, TEA) and/or Cr(VI). Evaluated quantum yield values suggest that erythrosin B undergoes faster photobleaching than eosin Y or rose bengal in presence of TEA. Presence of Cr(VI) in addition to TEA drastically decreases the quantum yield. Possible reaction pathways of photobleaching are discussed.

引用

页码：73 / 77

页数：5

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