Third Report of the Committee on Photochemistry Reprint and Circular Series of the National Research Council (1938) / Chapter Skim
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A Table of Quantum Yields in Experimental Photochemistry
A Table of Quantum Yields in Experimental Photochemistry
Pages 15-34
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From page 15... ...
Any hope of simplicity in chemical kinetics disappeared long ago, and the present table has been assembled not to emphasize the almost universal occurrence of secondary efl ects which follow the primary process of quantum absorption, but to record the experimental facts of photochemistry in the simplest possible manner. The primary excitation is usually followed by rearrangements and degradation of the energy as heat, by reverse or competing reactions which make the overall quantum yield less than unity, or by continuing reactions which produce a chain and give a value greater than unity.
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From page 16... ...
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From page 17... ...
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From page 18... ...
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From page 19... ...
1 QUANTUM YIELDS IN EXPERIMENTAL PHOTOCHEMISTRY I,9 ~ O ~ V ~ ~ ~ ~ O O ~ ~ ~ ~ ~ V N ~ ~ "'.~ '~= r7' O j,~ ~= ~= O ~ ~ ~ O ~ ° ~ ~ O ~ O o '° :° ~ ° V A ~q ~ ~ o 8 CO o o o o o CO CO o CO oo dd ~ ~ eH t_ 8 8 o 8 o 8 N ~ 8 ~ ~o ~ o~ ~o~,, i<: V C°O CC eq C~ e4 ~ ~ ~m m m m m ° v v v ._ C3 v .= v ov ~ v O2 ~ eQ ~n c3 ~ ~ ~ d V ~ · ~ ~ ~ ~ ~ ~ E 5 0 0 ~q O ~0 v ~ m ~0 ~0 ~ ~0~ S O t O O O D Y 5 0 == a Y O t V 5 y D E - ~ 0 V E t E ~ E s,, E -~, s V s t s t P: ~ ~ ~ ~ V V V
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From page 21... ...
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From page 27... ...
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From page 29... ...
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From page 31... ...
Q~ FIELDS IN EXPERI~L PBOTOCBE~ISTRY ~1 ad ~ ~ ~ o == ~ ~ ~ .
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From page 32... ...
Particularly in chain reactions the quantum yield may vary considerably with slight changes in the reacting system and with traces of impurities. Special conditions, such as concentration, are given in the last column of table 1.
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From page 33... ...
Faraday Soc.
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From page 34... ...
Faraday Soc.
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