Fast energy transfer of charge-transfer triplet excited state (3CT) of [Ru(bpy)3](PF6)2 to Os2+ at short distances in the crystal

Minoru Tsushima; Noriaki Ikeda; Koichi Nozaki; Takeshi Ohno

doi:10.1021/jp993620z

Fast energy transfer of charge-transfer triplet excited state (³CT) of [Ru(bpy)₃](PF₆)₂ to Os²⁺ at short distances in the crystal

Minoru Tsushima, Noriaki Ikeda^*, Koichi Nozaki, Takeshi Ohno

^*Corresponding author for this work

Department of Chemistry

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

17 Scopus citations

Abstract

The energy transfer of a charge-transfer triplet excited state (³CT) in [Ru(bpy)₃](PF₆)₂ (bpy = 2,2′-bipyridine) crystals doped with [Os(bpy)₃](PF₆)₂ was studied by a time-correlated single-photon counting method, where the excited Ru(II) moiety and the Os(II) moiety act as energy donor (D) and acceptor (A), respectively. ³CT of Ru²⁺ in the [Os_xRu_1-x(bpy)₃](PF₆)₂ (x > 0.0099) exhibited multiexponential decay, which is ascribed to direct energy transfer to Os²⁺ at various rates depending on the D - A distances. Hopping of ³CT to the closest Ru²⁺ (Ikeda et al., J. Pliys. Chem. A, 2000) changed the D - A distances and made the decay faster at a later time. The complex emission decay was analyzed by a Monte Carlo simulation. The rates of energy transfer to Os²⁺ at 0.82 and 1.08 nm were determined to be 1.7 × 10¹¹ and 7 × 10⁹ s^-1, respectively. The distance dependence of the rates of energy transfer through space and its mechanism are discussed.

Original language	English
Pages (from-to)	5176-5180
Number of pages	5
Journal	Journal of Physical Chemistry A
Volume	104
Issue number	22
DOIs	https://doi.org/10.1021/jp993620z
State	Published - 2000/06/08

ASJC Scopus subject areas

Physical and Theoretical Chemistry

Access to Document

10.1021/jp993620z

Cite this

@article{b56b9631dbcf4a4fa06c2b513accef8e,

title = "Fast energy transfer of charge-transfer triplet excited state (3CT) of [Ru(bpy)3](PF6)2 to Os2+ at short distances in the crystal",

abstract = "The energy transfer of a charge-transfer triplet excited state (3CT) in [Ru(bpy)3](PF6)2 (bpy = 2,2′-bipyridine) crystals doped with [Os(bpy)3](PF6)2 was studied by a time-correlated single-photon counting method, where the excited Ru(II) moiety and the Os(II) moiety act as energy donor (D) and acceptor (A), respectively. 3CT of Ru2+ in the [OsxRu1-x(bpy)3](PF6)2 (x > 0.0099) exhibited multiexponential decay, which is ascribed to direct energy transfer to Os2+ at various rates depending on the D - A distances. Hopping of 3CT to the closest Ru2+ (Ikeda et al., J. Pliys. Chem. A, 2000) changed the D - A distances and made the decay faster at a later time. The complex emission decay was analyzed by a Monte Carlo simulation. The rates of energy transfer to Os2+ at 0.82 and 1.08 nm were determined to be 1.7 × 1011 and 7 × 109 s-1, respectively. The distance dependence of the rates of energy transfer through space and its mechanism are discussed.",

author = "Minoru Tsushima and Noriaki Ikeda and Koichi Nozaki and Takeshi Ohno",

year = "2000",

month = jun,

day = "8",

doi = "10.1021/jp993620z",

language = "英語",

volume = "104",

pages = "5176--5180",

journal = "Journal of Physical Chemistry A",

issn = "1089-5639",

publisher = "American Chemical Society",

number = "22",

}

TY - JOUR

T1 - Fast energy transfer of charge-transfer triplet excited state (3CT) of [Ru(bpy)3](PF6)2 to Os2+ at short distances in the crystal

AU - Tsushima, Minoru

AU - Ikeda, Noriaki

AU - Nozaki, Koichi

AU - Ohno, Takeshi

PY - 2000/6/8

Y1 - 2000/6/8

N2 - The energy transfer of a charge-transfer triplet excited state (3CT) in [Ru(bpy)3](PF6)2 (bpy = 2,2′-bipyridine) crystals doped with [Os(bpy)3](PF6)2 was studied by a time-correlated single-photon counting method, where the excited Ru(II) moiety and the Os(II) moiety act as energy donor (D) and acceptor (A), respectively. 3CT of Ru2+ in the [OsxRu1-x(bpy)3](PF6)2 (x > 0.0099) exhibited multiexponential decay, which is ascribed to direct energy transfer to Os2+ at various rates depending on the D - A distances. Hopping of 3CT to the closest Ru2+ (Ikeda et al., J. Pliys. Chem. A, 2000) changed the D - A distances and made the decay faster at a later time. The complex emission decay was analyzed by a Monte Carlo simulation. The rates of energy transfer to Os2+ at 0.82 and 1.08 nm were determined to be 1.7 × 1011 and 7 × 109 s-1, respectively. The distance dependence of the rates of energy transfer through space and its mechanism are discussed.

AB - The energy transfer of a charge-transfer triplet excited state (3CT) in [Ru(bpy)3](PF6)2 (bpy = 2,2′-bipyridine) crystals doped with [Os(bpy)3](PF6)2 was studied by a time-correlated single-photon counting method, where the excited Ru(II) moiety and the Os(II) moiety act as energy donor (D) and acceptor (A), respectively. 3CT of Ru2+ in the [OsxRu1-x(bpy)3](PF6)2 (x > 0.0099) exhibited multiexponential decay, which is ascribed to direct energy transfer to Os2+ at various rates depending on the D - A distances. Hopping of 3CT to the closest Ru2+ (Ikeda et al., J. Pliys. Chem. A, 2000) changed the D - A distances and made the decay faster at a later time. The complex emission decay was analyzed by a Monte Carlo simulation. The rates of energy transfer to Os2+ at 0.82 and 1.08 nm were determined to be 1.7 × 1011 and 7 × 109 s-1, respectively. The distance dependence of the rates of energy transfer through space and its mechanism are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0033746539&partnerID=8YFLogxK

U2 - 10.1021/jp993620z

DO - 10.1021/jp993620z

M3 - 学術論文

AN - SCOPUS:0033746539

SN - 1089-5639

VL - 104

SP - 5176

EP - 5180

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

IS - 22