Zn(etioporphyrin I) [triplet]

excited state quenched by Carbon tetrachloride
Roy, J.K.; Carroll, F.A.; Whitten, D.G.
J. Am. Chem. Soc. 96: 6349-55 (1974)

Zn(etioporphyrin I) [triplet] quenched by Carbon tetrachloride at conc. (1-50) x 10–5 mol L–1
Solvent : Benzene, 25ºC

kq = 3 x 107(L mol–1 s–1)
Activation energy = 14 (20-78ºC)(kJ mol–1)
Entropy of activation = –54(J K–1 mol–1)

Mechanism: exciplex formation
Experimental methods: conventional flash, absorption, single shot signal
Comments: nonlinear Stern-Volmer plot at higher [Q]

Renge, I.V.; Kuz'min, V.A.; Mironov, A.F.; Borisevich, Yu.E.
Dokl. Phys. Chem. 263(1-3): 181-4 (1982)

Zn(etioporphyrin I) [triplet] quenched by Carbon tetrachloride
Solvent : Benzene, 25ºC

kq <=2 x 105(L mol–1 s–1)


Experimental methods: conventional flash, absorption, single shot signal
Comments: see also 85E593

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