50G 



INDEX 



Chlorophyll a {Continued) 



infrared absorption spectra of, 38, 



40, 41, 42-44. 

 intrinsic phosphorescence of, 14. 

 light emitted from, 118. 

 long-lived (metastable triplet) state, 



68. 

 phosphorescence of, 8. 



in presence of aldehyde, 40. 

 in presence of base, 46. 

 in presence of oxygen, 46. 

 quantum yield of fluorescence for 

 in the living cell, 107-111. 

 in solution, 5, 107-111. 

 reversible reduction of, 70. 

 sensitivity to photodecomposition of, 

 14. 

 Chlorophyll-a holochrome, absorption 



spectrum of, 467. 

 Chlorophyll addition compounds, sta- 

 bility constants of, 4. 

 Chlorophyll h 



absorption spectrum of 

 in benzene, 9. 

 of long-lived state, 11. 

 in pyridine, 9. 

 differentiated from chlorophyll a, 14. 

 infrared absorption spectra of, 38, 



40, 41, 42-44. 

 phosphorescence of, 8, 14. 

 quantum yield of fluorescence for, 5, 



8. ' 

 sensitivity to photodecomposition of, 

 14. 

 Chlorophyll fluorescence 



as a function of light intensity, HI, 



113-117. 

 in plants, 80, 107-117. 

 total yield computation, 111. 

 in vitro, 68. 



in hydrocarbons, 4. 

 quenching of. See Quenching. 

 self-quenching. See Self -quenching. 

 yield, 4. 

 in vivo, 68. 



effect of illumination on, 46. 

 Chlorophyll molecule, 19-20. 



biradical metastable state of, 68. 

 fluorescent (first excited singlet) 

 state 

 absorption spectrum of, 20, 135. 

 energy of, 14-15. 

 properties of, 5-7. 

 reactions of, 270. 

 transition into long-lived state, 

 142. 

 long-lived (metastable triplet) state, 

 19, 20, 45, 68, 87, 123, 142. 

 absorption spectrum of, 8, 9, 10, 



11, 20-30. 

 in chlorophyll photosensitized re- 

 actions, 52, 85. 

 energy of, 14-15. 

 formed by flash illumination, 4, 

 31-33. 

 absorption spectrum of, 4, 33- 

 36. 

 half-life of, 8, 86. 

 properties of, 7-9. 

 transformation into, 68, 142. 

 orientation of, 6. 

 phosphorescent state, 123. 

 second excited state, 5, 20-30. 

 short-lived (excited triplet) state, 21- 



30. 

 short-lived state 



absorption spectrum of, 85-87. 

 half-life of, 86. 

 structural formula of, 41. 

 tautometric state of, 4, 68. 

 Chlorophyll-protein complex, 45. 

 Chlorophyll reactions 

 absorption of light, 75. 

 bleaching during, 31-36. 

 of freshly formed chlorophyll, 224. 

 Chlorophyll reactions in vitro 

 allomerization, 42. 

 enolization, 40. 

 phase test, 4, 20. 



photochemical, 3-12. See also Chloro- 

 phyll-sensitized reactions. 

 addition compounds in, 4. 

 long-lived state in, 8, 9. 

 rate of, 7. 



