Absence of dielectric relaxation effects on intramolecular electron transfer in 
porphyrin-quinone cyclophanes

Pöllinger, F.; Heitele, Hans; Michel-Beyerle, Maria Elisabeth; Anders, Christine; Futscher, Michael; Staab, Heinz A.

doi:10.1016/0009-2614(92)85043-A

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Absence of dielectric relaxation effects on intramolecular electron transfer in porphyrin-quinone cyclophanes

Pöllinger, F., Heitele, H., Michel-Beyerle, M. E., Anders, C., Futscher, M., & Staab, H. A. (1992). Absence of dielectric relaxation effects on intramolecular electron transfer in porphyrin-quinone cyclophanes. Chemical Physics Letters, 198(6), 645-652. doi:10.1016/0009-2614(92)85043-A.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-AB1D-7 Version Permalink: https://hdl.handle.net/21.11116/0000-0002-55BE-9

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http://www.sciencedirect.com/science/article/pii/000926149285043A/pdf?md5=af337bf20632794664cfaa1bd3ef00fc&pid=1-s2.0-000926149285043A-main.pdf (Any fulltext) Open Access status unknown

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Pöllinger, F., Author
Heitele, Hans, Author
Michel-Beyerle, Maria Elisabeth, Author
Anders, Christine¹, Author
Futscher, Michael¹, Author
Staab, Heinz A.¹, Author

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1Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society, ou_1497706

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Abstract: We have measured photoinduced intramolecular electron transfer rates ket in two porphyrin-dichloroquinone cyclophanes varying the polarity, the temperature, and the dielectric relaxation time of the solvent. The reaction is most likely activationless or in the inverted region in all solvents. The adiabaticity parameter k = 4πV2eff/khλsτℓ for dynamic dielectric solvent control is estimated to cover the range 0.2 ⪕k ⪕ 400. Nevertheless the rate ket was found to be almost independent of the solvent properties (ket > 5 × 1011 s−1) casting doubt on current ideas of dielectric relaxation effects on electron transfer.

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Language(s): eng - English

Dates: Submitted: 1992-08-01Accepted: 1992-09-08Published Online: 2001-11-13Date issued: 1992-10-23

Publication Status: Issued

Pages: 8

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Identifiers: DOI: 10.1016/0009-2614(92)85043-A

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Title: Chemical Physics Letters

Other : Chem. Phys. Lett.

Source Genre: Journal

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Publ. Info: Amsterdam : North-Holland

Pages: - Volume / Issue: 198 (6) Sequence Number: - Start / End Page: 645 - 652 Identifier: ISSN: 0009-2614
CoNE: https://pure.mpg.de/cone/journals/resource/954925389241