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RICCIARDI GIAMPAOLO, BELVISO SANDRA, D'AURIA MAURIZIO, LELJ FRANCESCO. Synthesis, Spectro-Electrochemical Properties and Photoreaction with O2 of Lutetium Bis-ethyltetraazaporphyrin. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1002/(sici)1099-1409(199811/12)2:6<517::aid-jpp90>3.0.co;2-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The synthesis, spectroscopic and electrochemical properties of the Lu ( oepz )2 (oepz ≡ 2,3,7,8,12,13,17,18-octakis(ethyl)-5,10,15,20-porphyrazinato) complex are reported. The complex, as inferred from UV-vis spectra recorded at different concentrations, strongly aggregates in solution, the most likely association mode being dimerization. The complex shows a weak near-IR absorption (λ max = 834 nm) that is considerably blue-shifted compared with the near-IR absorption of bis(π-radical) lutetium analogues. The Lu ( oepz )2 neutral species is electrochemically stable between 0.73 and -0.98 V (vs Ag/AgCl), which is the largest range of stability for neutral lutetium di- tetrapyrrole complexes. Lu ( oepz )2 shows excellent Type II photodynamic activity, as indicated by the value of the singlet oxygen generation quantum yield φΔ of 0.94 obtained by comparison with meso-tetraphenylporphyrin.
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Affiliation(s)
- GIAMPAOLO RICCIARDI
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, I-85100 Potenza, Italy
| | - SANDRA BELVISO
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, I-85100 Potenza, Italy
| | - MAURIZIO D'AURIA
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, I-85100 Potenza, Italy
| | - FRANCESCO LELJ
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, I-85100 Potenza, Italy
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Amati M, Belviso S, D'Auria M, Lelj F, Racioppi R, Viggiani L. Tandem Photoarylation-Photoisomerization of Halothiazoles: Synthesis, Photophysical and Singlet Oxygen Activation Properties of Ethyl 2-Arylthiazole-5-carboxylates. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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