Maiti, Nakul C. ; Ravikanth, M. (1996) Fluorescence study of some deformed zinc(II) porphyrins Journal of Photochemistry and Photobiology A: Chemistry, 101 (1). pp. 7-10. ISSN 1010-6030
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S1010-6030(96)04400-0
Abstract
The effect of deformation in the porphyrin ring on the emission properties of a series of zinc(II) derivatives of basket handle porphyrins is reported. Emission from the upper excited S2 state is observed in all zinc(II) deformed porphyrins. The porphyrin ring deformation results in red shifts of both the S1 and S2 emission bands and perturbed lifetimes of the S1 state. Decreased quantum yields and increased intersystem crossing rates are also caused by porphyrin ring deformation. The decrease in the S1 fluorescence yields can be interpreted in terms of an enhancement of the non-radiative rate, whereas a reduction in the energy gap between the S2 and S1 states results in low S2 quantum yields relative to planar derivatives.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Deformation; Fluorescence; Zinc(II) Porphyrins |
| ID Code: | 104503 |
| Deposited On: | 01 Dec 2017 10:49 |
| Last Modified: | 01 Dec 2017 10:49 |
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