Shafikov, Marsel Z. and Suleymanova, Alfiya F. and Kozhevnikov, Dmitry N. and Koenig, Burkhard (2017) Tuning the Excimer Emission of Amphiphilic Platinum(II) Complexes Mediated by Phospholipid Vesicles. INORGANIC CHEMISTRY, 56 (9). pp. 4885-4897. ISSN 0020-1669, 1520-510X
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Two new amphiphilic platinum(B) complexes, [Pt(2-(4-fluorophenyl)-5-(4-dodecyloxyphenyl)pyridine) (acac)]-(Pt-1) and [Pt(2-(4-dodecyloxyphenyl)-5-(thien-2-yl)-c-C-yclopentenepyridine) (acac)] (Pt-2), where-acac is acetylacetonate, were synthesized and characterized. Apart from,conventional phosphorescence of single molecules (ME-monomer emission), complexes Pt-1 and Pt-2 also exhibit excimer emission (BB) when embedded into phospholipid vesicles, that is assigned to emissive Pt-Pt excimers. The BE intensity. in-vesicular media appeared to depend on the viscosity of the vesicles and the concentration of the embedded,complex. Differences in the EE properties of complexes Pt-1 and Pt-2 are Correlated with the energies of the pi-character frontier orbitals defined by the design of the cyclometalating phenylpyridine ligand. Higher energies of the frontier pi-orbitals (HOMO and LUMO) naturally promote stronger pi=pi interactions, thus obstructing the Pt-II-Pt-II interaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ALKYNYLPLATINUM(II) TERPYRIDYL COMPLEXES; INFRARED NIR EMISSION; INTRAMOLECULAR EXCIMER; CYCLOMETALATED PLATINUM(II); PHASE-TRANSITIONS; PHOSPHORESCENCE EMISSION; ELECTRONIC SPECTROSCOPY; 2ND-HARMONIC GENERATION; IRIDIUM(III) COMPLEXES; LUMINESCENT PROPERTIES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:10 |
| Last Modified: | 20 Feb 2019 07:12 |
| URI: | https://pred.uni-regensburg.de/id/eprint/952 |
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