2508
ROBERT W. WEEKS,JR.,AND JOHN K. GARLAND
(2) When the ratio is greater than 1 but less than 2, (2) Intersystem crossover in the first excited state is E0(4T2)‘v so that there is a possibility of obcharacterized by serving both phosphorescence and fluorescence. See I 4T2)-+ U’;I) -+ 2E) Figure 4. (3) For ratios about 2 or greater &0(2E)
