X-RAY-INDUCED VISIBLE LUMINESCENCE OF PORPHYRINS

被引：9
|
作者：
KOKOTOV, S
LEWIS, A
NEUMANN, R
AMRUSI, S
机构：
[1] HEBREW UNIV JERUSALEM,DEPT APPL PHYS,IL-91904 JERUSALEM,ISRAEL
[2] HEBREW UNIV JERUSALEM,GRAD SCH APPL SCI & TECHNOL,CASALI INST APPL CHEM,IL-91904 JERUSALEM,ISRAEL
来源：
PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1994年 / 59卷 / 03期
关键词：
D O I：
10.1111/j.1751-1097.1994.tb05052.x
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
A concept has been presented whereby X-ray irradiation can be used to induce visible luminescence of chromophores such as porphyrins. The essential aspects of the idea have been demonstrated in a supramolecular assembly consisting of a water-dispersed polystyrene latex with an embedded scintillating compound, 2,5-diphenyloxazole, and an externally attached hematoporphyrin. X-ray excitation of the assembly yields an emission spectra typical for hematoporphyrin with fluorescent yields of up to 3% with respect to 2,5-diphenyloxazole emission. Significant quenching in the presence of dioxygen indicates that singlet oxygen is formed at atmospheric conditions.
引用
收藏
页码：385 / 387
页数：3
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