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Singlet oxygen generation via two-photon excited FRET. (W. R. Dichtel, J. M. Serin, C. Edder, J. M. J. Fréchet, M. Mastuszewski, L.-S. Tan, T. Y. Ohulchanskyy, P. N. Prasad), J. Am. Chem. Soc. 2004126, 5380 5381.
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