On Anomalous Fluorescence of Symmetrical Polymethine Dyes

Table 3

Calculated absorption spectrum of PMD-I.

Type of quantum transition	Wavelength λ, nm	МО, between which there was a transition	Oscillator strength	Symmetry
S0 ⟶ T1	1146.8	54 ⟶ 55	0	B2 ⟶ A2 – x – B1
S0 ⟶ T2	684.3	54 ⟶ 56	0	В2 ⟶ В2 – y – A1
		53 ⟶ 55		А2 ⟶ А2 – y – A1
S0 ⟶ S1	598.9	54 ⟶ 55	1.5975	B2 ⟶ A2 – x – B1
			π ⟶ π
S0 ⟶ S2	351.7	54 ⟶ 58	0.0000	B2 ⟶ A2 – x – B1
		51 ⟶ 55	π ⟶ π	B2 ⟶ A2 – x – B1
S0 ⟶ S3	351.5	54 ⟶ 57	0.0011	В2 ⟶ В2 – y – A1
		52 ⟶ 55	π ⟶ π	А2 ⟶ А2 – y – A1
S0 ⟶ S4	344.9	54 ⟶ 56	0.1673	В2 ⟶ В2 – y – A1
		53 ⟶ 55	π ⟶ π	А2 ⟶ А2 – y – A1