Abstract
This work reports on the synthesis, characterization, photophysical properties and electrochemical characterization of new tetra-substituted titanium phthalocyanine with dimethylaminoethanol groups on peripheral positions (2) and water-soluble quaternized counterpart. The water-soluble titanium(IV) phthalocyanine derivative (3) was found to be aggregated in aqueous media but was partially or fully disaggregated in the presence of a surfactant Triton X-100. The capping of the titanyl (metaloxo) inner core with catechol derivatives (4-7) were also synthesized. The axially substituted titanium phthalocyanines show high solubility and a low aggregation tendency due to the steric hindrance. The structures of these compounds were characterized by using elemental analyses, UV-Vis, FT-IR, 1H NMR and mass spectroscopies. Their photophysical properties were also studied and fluorescence quantum yields were found to range from 0.02 to 0.13. The electrochemical properties of 2 were also investigated by using cyclic voltammetry in this report.
Original language | English |
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Pages (from-to) | 340-346 |
Number of pages | 7 |
Journal | Dyes and Pigments |
Volume | 97 |
Issue number | 2 |
DOIs | |
Publication status | Published - May 2013 |
Funding
This work was supported by the Istanbul Technical University and TUBITAK .
Funders | Funder number |
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TUBITAK | |
Istanbul Teknik Üniversitesi |
Keywords
- Axial substitution
- Fluorescence
- Photodynamic therapy
- Phthalocyanine
- Titanyl
- Water soluble