Abstract
In this study, synthesis of new ligands, 8-hydroxy-3-[p-(3′,4′-dicyanophenoxy)-phenyl]coumarin and 8-hexyloxy-3-[p-(3′,4′- dicyanophenoxy)-phenyl]coumarin, and their phthalocyanines, 2,9,16,23-tetrakis[8-hexyloxy-3-(4-oxyphenyl)coumarin]- metal-free and metallophthalocyanines {M[Pc(OBzCou)4] (M = 2H, Zn(II), Co(II); Bz: benzene; Cou: coumarin)} were synthesised. The novel chromogenic compounds were characterised by elemental analysis: 1H NMR, 13C NMR,MALDI-TOF, IR and UV-vis spectral data. The effect of coumarin substituents on the photophysical properties of metal-free (H2Pc) and zinc phthalocyanines (ZnPc) derivatives has been examined. Spectrophotometric measurements revealed that coumarinsubstituted ZnPc derivatives were in the unaggregated form, whereas those of H2Pc species were in aggregated form. It means that substitution of coumarin derivative prevents the cluster formation in the presence of zinc ion in the centre of Pc.
| Original language | English |
|---|---|
| Pages (from-to) | 624-631 |
| Number of pages | 8 |
| Journal | Supramolecular Chemistry |
| Volume | 21 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Oct 2009 |
Funding
We are thankful to the Scientific and Research Council of Turkey (TUBITAK) [(107T347) and (108T094)], The Research Foundation of Marmara University (Commission of Scientific Research Project under grant FEN-BGS-1207070149, 2007) and DPT-2004 (project no. 2003K120970).
| Funders | Funder number |
|---|---|
| Scientific and Research Council of Turkey | |
| TUBITAK | 108T094, 107T347 |
| Marmara Üniversitesi | FEN-BGS-1207070149, 2003K120970, DPT-2004 |
Keywords
- Aggregation
- Cobalt
- Coumarin derivatives
- Fluorescence
- Phthalocyanines
- Zinc