Yersin, Hartmut and Kratzer, Cornelius (2002) Energy harvesting in {Lambda-[Ru(bpy)(3)]Delta-[Os(bpy)(3)]}(PF6)(4) and tunability of emission properties under magnetic field application. CHEMICAL PHYSICS LETTERS, 362 (5-6). pp. 365-372. ISSN 0009-2614
Full text not available from this repository.Abstract
{Lambda-[Ru(bpy)(3)]Delta-[Os(bpy)(3)]}(PF6)(4) is the first representative of anew class of materials. The crystal structure is built up of homochiral layers of Lambda-[Ru(bpy)(3)](2+) that alternate with homochiral layers of Delta-[Os(bpy)(3)](2+). At low temperature, the excitation energy is transferred efficiently by radiationless processes to one single crystallographic site of Delta-[Os(bpy)(3)](2+). Due to energy accumulation at this site of lowest energy, the new compound exhibits the interesting property of self-site-selectivity. Thus, one obtains highly resolved one-site emission spectra of Delta-[Os(bpy)(3)](2+) for every excitation wavelength. With application of a magnetic field, e.g., of B = 12 T, the intensity of the lowest electronic 0-0 transition increases by several orders of magnitude and the vibrational satellite structure is changed from a vibronically induced (Herzberg-Teller) to a Franck-Condon induced structure. This is due to a magnetically induced coupling between lower lying triplet substates. Similar observations have not been reported yet for other compounds. (C) 2002 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LYING ELECTRONIC STATES; TRANSFER EXCITED-STATES; TIME-RESOLVED SPECTRA; METAL-COMPLEXES; CRYSTAL; <RU(BPY)3>(PF6)2; <RU(BPY)(3)>(2+); <OS(BPY)3>2+; DYNAMICS; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Hartmut Yersin |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Sep 2021 07:52 |
| Last Modified: | 02 Sep 2021 07:52 |
| URI: | https://pred.uni-regensburg.de/id/eprint/39964 |
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