DC pole | Wartość | Język |
dc.contributor.author | Choroba, Katarzyna | - |
dc.contributor.author | Kotowicz, Sonia | - |
dc.contributor.author | Maroń, Anna | - |
dc.contributor.author | Świtlicka, Anna | - |
dc.contributor.author | Szłapa-Kula, Agata | - |
dc.contributor.author | Siwy, Mariola | - |
dc.contributor.author | Grzelak, Justyna | - |
dc.contributor.author | Sulowska, Karolina | - |
dc.contributor.author | Maćkowski, Sebastian | - |
dc.contributor.author | Schab-Balcerzak, Ewa | - |
dc.contributor.author | Machura, Barbara | - |
dc.date.accessioned | 2021-07-02T08:35:43Z | - |
dc.date.available | 2021-07-02T08:35:43Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Dyes and Pigments, Vol. 192, (2021) art. no. 109472 | pl_PL |
dc.identifier.issn | 0143-7208 | - |
dc.identifier.issn | 1873-3743 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/20528 | - |
dc.description.abstract | In this work, a series of six rhenium(I) complexes bearing 2,2′ :6′ ,2′′ -terpyridine (terpy), 2,6-di(thiazol-2-yl)pyridine (dtpy), and 2,6-di(pyrazin-2-yl)pyridine (dppy) with appended quinolin-2-yl and N-ethylcarbazol-3-yl groups were prepared and spectroscopically investigated to evaluate the photophysical consequences of both the trisheterocyclic core (terpy, dtpy and dppy) and the heterocyclic substituent. The [ReCl(CO)3(Ln-κ2N)] complexes are regarded as ideal candidates for getting structure–property relationships, while terpy-like framework represents an excellent structural backbone for structural modifications. The replacement of the peripheral pyridine rings of 2,2′ :6′ ,2′′ -terpyridine by thiazoles and pyrazines resulted in a significant red-shift of the absorption and emission of [ReCl(CO)3(Ln-κ2N)] due to stabilization of the ligand-centred LUMO orbital. Both quinoline and Nethylcarbazole are extended π-conjugation organic chromophores, but they differ in electron-donating abilities. The low-energy absorption band of Re(I) complexes with the triimine ligands bearing quinolin-2-yl group was contributed by the metal-to-ligand charge-transfer (MLCT) electronic transitions. The introduction of electrondonating N-ethylcarbazol-3-yl substituent into the triimine acceptor core resulted in the change of the character of the HOMO of Re(I) complexes and a significant increase of molar absorption coefficients of the longwavelength absorption, which was assigned to a combination of 1MLCT and 1ILCT (intraligand chargetransfer) transitions. Regardless of the appended heteroaromatic group, the emitting excited state of Re(I) terpy-based complexes was demonstrated to have predominant 3MLCT character, as evidenced by comprehensive studies including static and time-resolved emission spectroscopy along with ultrafast transient absorption measurements. The diodes with Re(I) complexes dispersed molecularly in a PVK:PBD matrix were emissive andeffects of the complex structure on colour of emitted light and its intensity was pronounced. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | Re(I) carbonyl complexes | pl_PL |
dc.subject | Triimine ligands | pl_PL |
dc.subject | Photoluminescence | pl_PL |
dc.subject | Electroluminescence | pl_PL |
dc.subject | Femtosecond transient absorption spectroscopy | pl_PL |
dc.title | Ground- and excited-state properties of Re(I) carbonyl complexes - effect of triimine ligand core and appended heteroaromatic groups | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1016/j.dyepig.2021.109472 | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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