Bensasson RV, Berberan-Santos M, Brettreich M, Frederiksen J, Gottinger H, Hirsch A, Land E, Leach S, McGarvey D, Schönberger H, Schröder C (2001)
Publication Type: Journal article, Original article
Publication year: 2001
Original Authors: Bensasson R.V., Berberan-Santos M.N., Brettreich M., Frederiksen J., Göttinger H., Hirsch A., Land E.J., Leach S., McGarvey D.J., Schönberger H., Schröder C.
Publisher: Royal Society of Chemistry
Book Volume: 3
Pages Range: 4679-4683
Journal Issue: 21
DOI: 10.1039/b105430a
Laser flash photolysis and pulse radiolysis have been used to determine properties of the lowest triplet state of a series of water-soluble malonic acid derivatives of C, C[C(COOH)] with n = 2-6, in water at pH 7.4. Similar studies were carried out on the corresponding ethyl esters, C[C(COOEt)] with n = 1-6, in the non-polar solvents, benzene or toluene. The properties include the T-T absorption spectra, the triplet molar absorption coefficients and the quantum yields of formation, Φ and Φ of the triplet and of singlet oxygen, respectively. This study shows a general tendency of the λ of the T-T absorption spectra, and of the Φ values to decrease with increasing number of addends. For regioisomers, the spectroscopic and photophysical parameters are modulated with the pattern of addition. The Φ quantum yields for the acids in aqueous solution are systematically lower than those of the ethyl esters in toluene. The lower Φ values observed for the acids in aqueous solution, and to a lesser extent for the esters in benzonitrile, can be interpreted as due to the presence of solute clusters in polar solvents.
APA:
Bensasson, R.V., Berberan-Santos, M., Brettreich, M., Frederiksen, J., Gottinger, H., Hirsch, A.,... Schröder, C. (2001). Triplet state properties of malonic acid C60 derivatives C60 [C(COOR)2] R = H, Et; n = 1-6. Physical Chemistry Chemical Physics, 3(21), 4679-4683. https://doi.org/10.1039/b105430a
MLA:
Bensasson, René V., et al. "Triplet state properties of malonic acid C60 derivatives C60 [C(COOR)2] R = H, Et; n = 1-6." Physical Chemistry Chemical Physics 3.21 (2001): 4679-4683.
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