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Determination of absolute chemiluminescence quantum yields for reactions of bis-(pentachlorophenyl) oxalate, hydrogen peroxide and fluorescent compounds

✍ Scribed by Catherall, Colin L. R. ;Palmer, T. Frank ;Cundall, Robert B.

Publisher
John Wiley and Sons
Year
1989
Weight
532 KB
Volume
3
Category
Article
ISSN
0884-3996

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✦ Synopsis

Absolute chemiluminescence quantum yields (+cJ for reactions of bis-(pentachlorophenyl) oxalate (PCPO), hydrogen peroxide (H202) and 9: 10 diphenyl anthracene (DPA) have been determined. A fully corrected chemiluminescence monitoring spectrometer was calibrated for spectral sensitivity using the chemiluminescence of the bis-(pentachlorophenyl) oxalate system as a liquid light source, the total photon output of which had previously been determined by chemical actinometry. At high (PCPO)/(H202) ratios +CL was found t o be independent of PCPO and H2O2 concentrations. Keywords C h e m i I u m i n esce n ce ; a bs o I u t e qua n t u m y i e I d s ; pent a c h I o ro p h e n y I oxa I at e

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The reactlon at room temperature of 0 25 M hydrogen peroxide mth 12 3 mM b&2,4dmltrophenyI) oxalate (DNPO) m tetrahydrofuran solvent m the presence of the fluorophore rubrene and 13 6 mM tetrabutylammonmm perchlorate yields a burst of chemdummescence m which the Intensity rmzs rapidly and decays mor