
TY  - JOUR
A1  - Fielding, PE 
A1  - Mau, AWH 
T1  - Spectra of zinc tetrabenzporphyrin in n-octane
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1976
VL  - 29
IS  - 5
SP  - 933
EP  - 940
KW  - 
UR  - https://doi.org/10.1071/CH9760933 
N2  - A detailed spectroscopic study of zinc tetrabenzporphyrin in n-octane reveals the following: (i) the relative magnitude of solute-solvent interaction in the ground and excited states increases in the order T1 < S0 < S1 < S2. (ii) The potential energy surface minima of the ground and excited states are very similar within the framework of the Franck-Condon principle. (iii) The absence of any hot-band emission from the Q band (S1) and any emission from the Soret band (S2) indicates that significant amounts of energy degrade to the lowest vibrational level of S1. (iv) An earlier report on monomer phosphorescence is mainly due to aggregation. Selective narrow-band excitation is shown to be a useful technique to unravel complex spectra of porphyrins in Shpolskii-type matrices. Accurate measurements can be made of the energies for electronic transitions between the ground and excited states of molecules isolated in the various sites of the host matrix. The intensity ratios for electronic and vibronic bands can also be determined. 
ER  -

