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)3 2+ 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)3 2+, 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)3 2+ and from the triplet excited state of Ru(bpy)3 2+ 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 |
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ASJC Scopus subject areas
- Chemistry(all)
- Biochemistry
- Molecular Biology
Cite this
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, Leif; 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
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TY - JOUR
T1 - Photoinduced electron transfer from a higher excited state of a porphyrin in a zinc porphyrin-ruthenium(II)tris-bipyridine dyad
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, Leif
AU - Harriman, A.
AU - Hissler, M.
AU - Trompette, O.
AU - Ziessel, R.
PY - 1999/11/1
Y1 - 1999/11/1
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)3 2+ 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)3 2+, 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)3 2+ and from the triplet excited state of Ru(bpy)3 2+ 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)3 2+ 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)3 2+, 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)3 2+ and from the triplet excited state of Ru(bpy)3 2+ to the lowest triplet state of ZnP.
UR - http://www.scopus.com/inward/record.url?scp=0032727945&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032727945&partnerID=8YFLogxK
M3 - Article
VL - 12
SP - 863
EP - 869
JO - Chemtracts
JF - Chemtracts
SN - 1431-9268
IS - 12
ER -