The Electronic Absorption Characteristics of Mixed Phthalocyaninato Porphyrinato Rare Earth(III) Triple Deckers M2(TPyP)2(Pc)
Description
Mixed phthalocyaninato tetrakis(4-pyridyl)porphyrinato rare earth triple-decker complexes M2(TPyP)2(Pc) [M = La (1), Eu (2)] have been prepared by condensation between M(TPyP)acac generated in situ and M(Pc)2. Their symmetrical structure (TPyP)M(Pc)M(TPyP) was verified by 1H NMR (1D and 2D) spectra in CDCl3 solutions. The electronic absorption spectra of these two compounds were recorded in the UV/Vis and near-IR region. A weak absorption in the near-IR region at 860 and 942 nm for 1 and 2, respectively, was observed as the lowest energy band and is attributed to the electronic transition from HOMO to LUMO for these mono(phthalocyaninato) bis(porphyrinato) rare earth complexes. Their electrochemical properties were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Analysis of the relationship between the optical and redox properties of M2(TPyP)2(Pc) reveals that the HOMO and LUMO of M2(TPyP)2(Pc) have both porphyrin and phthalocyanine character.
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ID Code: | 22518 |
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Item Type: | Contribution to Journal (Journal Article) |
Refereed: | Yes |
Measurements or Duration: | 7 pages |
DOI: | 10.1002/ejic.200390203 |
ISSN: | 1434-1948 |
Pure ID: | 34121078 |
Divisions: | Past > QUT Faculties & Divisions > Faculty of Science and Technology Past > QUT Faculties & Divisions > Science & Engineering Faculty Current > Research Centres > Australian Research Centre for Aerospace Automation |
Copyright Owner: | Consult author(s) regarding copyright matters |
Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
Deposited On: | 17 Jun 2009 13:14 |
Last Modified: | 03 Mar 2024 16:29 |
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