Ermilov E, Al-Omari S, Helmreich M, Jux N, Hirsch A, Röder B (2004)
Publication Type: Journal article, Original article
Publication year: 2004
Original Authors: Ermilov E.A., Al-Omari S., Helmreich M., Jux N., Hirsch A., Röder B.
Publisher: Elsevier
Book Volume: 234
Pages Range: 245-252
DOI: 10.1016/j.optcom.2004.02.024
A novel monofullerene-bis(pyropheophorbide a) dyad has been photophysically characterized by steady-state as well as time-resolved techniques. It was revealed that in this complex strong and fast quenching of the first excited singlet state of the pyropheophorbide a (pyroPheo) molecule occurs by efficient photoinduced electron transfer to the fullerene moiety in both polar (DMF) and nonpolar (toluene) solvents. In DMF the energy of the charge-separated state is 0.94 eV and it undergoes directly transition to the ground state resulting in a very low value of photosensitized singlet oxygen generation. In contrast to the situation in a polar solvent, in toluene the charge-separated state lies above the exited triplet state of pyroPheo as well as that of C. It has been shown that in a nonpolar solvent a sufficient amount of singlet oxygen was generated by energy transfer from the excited triplet state of pyroPheo which has been populated via relaxation of the charge-separated state. © 2004 Elsevier B.V. All rights reserved.
APA:
Ermilov, E., Al-Omari, S., Helmreich, M., Jux, N., Hirsch, A., & Röder, B. (2004). Steady-state and time-resolved studies on the photophysical properties of fullerene-pyropheophorbide a complexes in polar and nonpolar solvents. Optics Communications, 234, 245-252. https://dx.doi.org/10.1016/j.optcom.2004.02.024
MLA:
Ermilov, Eugeny, et al. "Steady-state and time-resolved studies on the photophysical properties of fullerene-pyropheophorbide a complexes in polar and nonpolar solvents." Optics Communications 234 (2004): 245-252.
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