Electronic absorption, MCD, and luminescence properties of porphyrin J-aggregates
2013 ◽
Vol 17
(08n09)
◽
pp. 703-711
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Keyword(s):
In this paper, we have investigated electronic absorption, magnetic circular dichroism, fluorescence, and phosphorescence spectra for a protonated form of H 2 TPPS 4( H 4 TPPS 4) and the J-aggregates of H 4 TPPS 4. The J-aggregation induces a large red-shift in the B (Soret) and Q absorption bands, while the phosphorescence peaks of H 4 TPPS 4 and its J-aggregates are almost entirely similar. The large red-shift of the B-band is quantitatively explained by the exciton interactions. Thus, the exciton interactions in the J-aggregates are proposed as a useful approach to decrease the energy splitting between the fluorescent and phosphorescent states.
1978 ◽
Vol 17
(3)
◽
pp. 283-290
◽
1984 ◽
Vol 57
(5)
◽
pp. 1336-1347
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Keyword(s):
1981 ◽
Vol 106
(1)
◽
pp. 301-307
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Keyword(s):