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Photothermal methods as tools for investigation of weakly interacting non-fluorescent phthalocyanines

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Boguta, A. , Wojcik, A. , Ion, R.M. , Wrobel, D.

Editorial: Elsevier, Journal of Photochemistry and Photobiology A: Chemistry, 163(1-2),, p.201-207, 2004.

Rezumat:

In this paper, we report the spectroscopic properties of two newly synthesized phthalocyanines when substituted with short and long alkyl chains dissolved in dimethyl sulfoxide. The dyes are non-fluorescent and show a weak tendency for dimer formation. The aggregation process is not clearly visible in the absorption spectra. Therefore, steady-state and time-resolved photothermal methods were applied to evaluate the existence of the dye aggregates and their influence on spectral parameters of the investigated dyes.

Cuvinte cheie: Non-radiative relaxation; Photothermal spectroscopy; Phthalocyanine; Triplet state generation