Studies of the emission spectra of tetracene‐ and pentacene‐doped pyrene crystals reveal that tetracene is soluble in pyrene crystals only to the extent of one part in 104, whereas pentacene is soluble only to less than one part in 105. These results explain why tetracene and pentacene are ``anomalously'' poor quenchers of pyrene fluorescence and resolve an apparent conflict with current theories of energy transfer.

1.
F. R.
Lipsett
 and
A. J.
Dekker
,
Can. J. Chem.
30
,
165
(
1952
).
Google Scholar
 
2.
R. M.
Hochstrasser
,
Rev. Mod. Phys.
34
,
531
(
1962
).
Google Scholar
Crossref
Search ADS
 
3.
M. Windsor, in Physics and Chemistry of the Organic Solid State, edited by D. Fox, M. M. Labes, and A. Weissberger (Interscience Publishers, Inc., New York, to be published), Vol. 2.
4.
D. C.
Northrop
 and
O.
Simpson
,
Proc. Roy. Soc. (London)
A234
,
136
(
1956
).
Google Scholar
 
5.
D. C.
Northrop
 and
O.
Simpson
,
Proc. Roy. Soc. (London)
A244
,
377
(
1958
).
Google Scholar
 
6.
H. H.
Perkampus
,
Z. Physik. Chem. (Frankfurt)
24
,
1
(
1960
).
Google Scholar
Crossref
Search ADS
 
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© 1964 American Institute of Physics.
1964
American Institute of Physics
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