Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad: Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin

D. LeGourriérec; M. Andersson; J. Davidsson; E. Mukhtar; L. Sun; L. Hammarström; A. Harriman; M. Hissler; O. Trompette; R. Ziessel

Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad: Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin

D. LeGourriérec, M. Andersson, J. Davidsson, E. Mukhtar, L. Sun, L. Hammarström, A. Harriman, M. Hissler, O. Trompette, R. Ziessel

Uppsala University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The upper S₂ excited state of the Zn(porphyrin) unit of the ZnP-(amide)-Ru(bpy)₃ dyad undergoes an ultrafast (k = 6 × 10¹¹ s^-1) electron transfer to Ru(bpy)₃²⁺ which is 60 times faster than from the lowest S₁ singlet state. On the other hand, the S₂ state of the ZnP-(Pt)-Ru(bpy)₃ dyad does not show an electron transfer. Instead, an ultrafast energy transfer occurs from the S₂ state of ZnP to the singlet excited state of Ru(bpy)₃²⁺, with a rate constant of about 3 ×10¹¹ s^-1. The excited-state dynamics of ZnP-(Pt)-Ru(bpy)₃ also involves energy transfer from the Si state of ZnP to Ru(bpy)₃²⁺ and from the triplet excited state of Ru(bpy)₃²⁺ to the lowest triplet state of ZnP.

Original language	English
Pages (from-to)	863-869
Number of pages	7
Journal	Chemtracts
Volume	12
Issue number	12
Publication status	Published - Nov 1 1999

ASJC Scopus subject areas

Chemistry(all)
Biochemistry
Molecular Biology

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LeGourriérec, D., Andersson, M., Davidsson, J., Mukhtar, E., Sun, L., Hammarström, L., Harriman, A., Hissler, M., Trompette, O., & Ziessel, R. (1999). Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad: Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin. Chemtracts, 12(12), 863-869.

Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad : Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin. / LeGourriérec, D.; Andersson, M.; Davidsson, J.; Mukhtar, E.; Sun, L.; Hammarström, L.; Harriman, A.; Hissler, M.; Trompette, O.; Ziessel, R.

In: Chemtracts, Vol. 12, No. 12, 01.11.1999, p. 863-869.

Research output: Contribution to journal › Article › peer-review

LeGourriérec, D, Andersson, M, Davidsson, J, Mukhtar, E, Sun, L, Hammarström, L, Harriman, A, Hissler, M, Trompette, O & Ziessel, R 1999, 'Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad: Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin', Chemtracts, vol. 12, no. 12, pp. 863-869.

LeGourriérec D, Andersson M, Davidsson J, Mukhtar E, Sun L, Hammarström L et al. Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad: Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin. Chemtracts. 1999 Nov 1;12(12):863-869.

LeGourriérec, D. ; Andersson, M. ; Davidsson, J. ; Mukhtar, E. ; Sun, L. ; Hammarström, L. ; Harriman, A. ; Hissler, M. ; Trompette, O. ; Ziessel, R. / Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad : Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin. In: Chemtracts. 1999 ; Vol. 12, No. 12. pp. 863-869.

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abstract = "The upper S2 excited state of the Zn(porphyrin) unit of the ZnP-(amide)-Ru(bpy)3 dyad undergoes an ultrafast (k = 6 × 1011 s-1) electron transfer to Ru(bpy)32+ which is 60 times faster than from the lowest S1 singlet state. On the other hand, the S2 state of the ZnP-(Pt)-Ru(bpy)3 dyad does not show an electron transfer. Instead, an ultrafast energy transfer occurs from the S2 state of ZnP to the singlet excited state of Ru(bpy)32+, with a rate constant of about 3 ×1011 s-1. The excited-state dynamics of ZnP-(Pt)-Ru(bpy)3 also involves energy transfer from the Si state of ZnP to Ru(bpy)32+ and from the triplet excited state of Ru(bpy)32+ to the lowest triplet state of ZnP.",

author = "D. LeGourri{\'e}rec and M. Andersson and J. Davidsson and E. Mukhtar and L. Sun and L. Hammarstr{\"o}m and A. Harriman and M. Hissler and O. Trompette and R. Ziessel",

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T2 - Energy transfer in molecular dyads comprising metalloporphyrin and ruthenium(II) tris(2,2'-bipyridyl) terminals. Competition between internal conversion and energy transfer in the upper excited singlet state of the porphyrin

AU - LeGourriérec, D.

AU - Andersson, M.

AU - Davidsson, J.

AU - Mukhtar, E.

AU - Sun, L.

AU - Hammarström, L.

AU - Harriman, A.

AU - Hissler, M.

AU - Trompette, O.

AU - Ziessel, R.

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N2 - The upper S2 excited state of the Zn(porphyrin) unit of the ZnP-(amide)-Ru(bpy)3 dyad undergoes an ultrafast (k = 6 × 1011 s-1) electron transfer to Ru(bpy)32+ which is 60 times faster than from the lowest S1 singlet state. On the other hand, the S2 state of the ZnP-(Pt)-Ru(bpy)3 dyad does not show an electron transfer. Instead, an ultrafast energy transfer occurs from the S2 state of ZnP to the singlet excited state of Ru(bpy)32+, with a rate constant of about 3 ×1011 s-1. The excited-state dynamics of ZnP-(Pt)-Ru(bpy)3 also involves energy transfer from the Si state of ZnP to Ru(bpy)32+ and from the triplet excited state of Ru(bpy)32+ to the lowest triplet state of ZnP.

AB - The upper S2 excited state of the Zn(porphyrin) unit of the ZnP-(amide)-Ru(bpy)3 dyad undergoes an ultrafast (k = 6 × 1011 s-1) electron transfer to Ru(bpy)32+ which is 60 times faster than from the lowest S1 singlet state. On the other hand, the S2 state of the ZnP-(Pt)-Ru(bpy)3 dyad does not show an electron transfer. Instead, an ultrafast energy transfer occurs from the S2 state of ZnP to the singlet excited state of Ru(bpy)32+, with a rate constant of about 3 ×1011 s-1. The excited-state dynamics of ZnP-(Pt)-Ru(bpy)3 also involves energy transfer from the Si state of ZnP to Ru(bpy)32+ and from the triplet excited state of Ru(bpy)32+ to the lowest triplet state of ZnP.

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