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Luminescence of porphyrins and metalloporphyrins. Part 1.—Zinc(II), nickel(II) and manganese(II) porphyrins
Abstract
Metal-free and ZnTPP complexes exhibit both fluorescence and low temperature phosphorescence, MnIITPP shows only low temperature phosphorescence while NiIITPP is non-luminescent. The absorption spectra show that there is little interaction between the metal and the porphyrin π-system so that the excited states can be regarded as (ππ*) in nature. Where phosphorescence occurs, the Stokes shift is 3900 ± 100 cm–1 and decreases with increased metal–porphyrin interaction. The rate constants for intersystem crossing and for non-radiative decay from the lowest (ππ*) triplet state depend upon spin–orbital coupling properties. ZnII and NiI exhibit fairly weak spin–orbital coupling but the effectiveness of MnII is enhanced by the paramagnetic character and by favourable geometry. NiIITPP possesses a low energy (dd) excited singlet state which facilitates rapid internal conversion within the singlet manifold.
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Shanmugam, S., Xu, J., & Boyer, C. (2015) · Journal of the American Chemical Society · doi:10.1021/jacs.5b05274 · Cited by 521
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Taniguchi, M., & Lindsey, J. S. (2018) · Photochemistry and Photobiology · doi:10.1111/php.12860 · Cited by 431
Liu, L., Zhang, J., An, R., Xue, Q., Cheng, X., Hu, Y., Huang, Z., Wu, L., Zeng, W., Miao, Y., et al. (2023) · Angewandte Chemie International Edition · doi:10.1002/anie.202217055 · Cited by 96
Metadata
- Authors
- Harriman, A.
- Venue
- Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 1980
- Volume
- 76
- Issue
- 0
- Pages
- 1978
- ISSN
- 0300-9599 (ISSN-L)
- OpenAlex
- W2070620448
- Cited by
- 231
- References
- 0
- FWCI
- 3.53
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Luminescence of porphyrins and metalloporphyrins. Part 1.—Zinc(II), nickel(II) and manganese(II) porphyrins. https://app.cochat.ai/papers/10.1039/f19807601978
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- Harriman, A. (1980). Luminescence of porphyrins and metalloporphyrins. Part 1.—Zinc(II), nickel(II) and manganese(II) porphyrins. Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases. https://doi.org/10.1039/f19807601978
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