Excited-state absorption of mono-, di- and tri-nuclear cyclometalated platinum 4,6-diphenyl-2,2′-bipyridyl complexes

Yunjing Li; Timothy M. Pritchett; Pin Shao; Joy E. Haley; Hongjun Zhu; Wenfang Sun

doi:10.1016/j.jorganchem.2009.07.045

Excited-state absorption of mono-, di- and tri-nuclear cyclometalated platinum 4,6-diphenyl-2,2′-bipyridyl complexes

Yunjing Li, Timothy M. Pritchett, Pin Shao, Joy E. Haley, Hongjun Zhu, Wenfang Sun

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

20 Scopus citations

Abstract

The ground-state absorption cross-sections (σ_g), triplet excited-state absorption cross-section (σ_T) at 532 nm, singlet excited-state absorption cross-sections (σ_s) at various visible wavelengths, singlet and triplet excited-state lifetimes, and triplet quantum yields of three cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes, are reported. The presence of metal-metal and π-π interactions in the dinuclear and trinuclear complexes results in a significant increase in their respective σ_g's in the visible spectral region. As a result, the ratio of σ_s/σ_g and σ_T/σ_g at each wavelength is significantly greater for the mononuclear complex than for the dinuclear and the trinuclear complexes.

Original language	English
Pages (from-to)	3688-3691
Number of pages	4
Journal	Journal of Organometallic Chemistry
Volume	694
Issue number	23
DOIs	https://doi.org/10.1016/j.jorganchem.2009.07.045
State	Published - 1 Nov 2009
Externally published	Yes

Keywords

Cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes
Excited-state lifetime
Singlet excited-state absorption cross-section
Triplet excited-state absorption cross-section
Triplet quantum yield
Z-scan

Access to Document

10.1016/j.jorganchem.2009.07.045

Cite this

@article{ae7e243e0333421297b1a80931b37d68,

title = "Excited-state absorption of mono-, di- and tri-nuclear cyclometalated platinum 4,6-diphenyl-2,2′-bipyridyl complexes",

abstract = "The ground-state absorption cross-sections (σg), triplet excited-state absorption cross-section (σT) at 532 nm, singlet excited-state absorption cross-sections (σs) at various visible wavelengths, singlet and triplet excited-state lifetimes, and triplet quantum yields of three cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes, are reported. The presence of metal-metal and π-π interactions in the dinuclear and trinuclear complexes results in a significant increase in their respective σg's in the visible spectral region. As a result, the ratio of σs/σg and σT/σg at each wavelength is significantly greater for the mononuclear complex than for the dinuclear and the trinuclear complexes.",

keywords = "Cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes, Excited-state lifetime, Singlet excited-state absorption cross-section, Triplet excited-state absorption cross-section, Triplet quantum yield, Z-scan",

author = "Yunjing Li and Pritchett, {Timothy M.} and Pin Shao and Haley, {Joy E.} and Hongjun Zhu and Wenfang Sun",

year = "2009",

month = nov,

day = "1",

doi = "10.1016/j.jorganchem.2009.07.045",

language = "英语",

volume = "694",

pages = "3688--3691",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "23",

}

TY - JOUR

T1 - Excited-state absorption of mono-, di- and tri-nuclear cyclometalated platinum 4,6-diphenyl-2,2′-bipyridyl complexes

AU - Li, Yunjing

AU - Pritchett, Timothy M.

AU - Shao, Pin

AU - Haley, Joy E.

AU - Zhu, Hongjun

AU - Sun, Wenfang

PY - 2009/11/1

Y1 - 2009/11/1

N2 - The ground-state absorption cross-sections (σg), triplet excited-state absorption cross-section (σT) at 532 nm, singlet excited-state absorption cross-sections (σs) at various visible wavelengths, singlet and triplet excited-state lifetimes, and triplet quantum yields of three cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes, are reported. The presence of metal-metal and π-π interactions in the dinuclear and trinuclear complexes results in a significant increase in their respective σg's in the visible spectral region. As a result, the ratio of σs/σg and σT/σg at each wavelength is significantly greater for the mononuclear complex than for the dinuclear and the trinuclear complexes.

AB - The ground-state absorption cross-sections (σg), triplet excited-state absorption cross-section (σT) at 532 nm, singlet excited-state absorption cross-sections (σs) at various visible wavelengths, singlet and triplet excited-state lifetimes, and triplet quantum yields of three cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes, are reported. The presence of metal-metal and π-π interactions in the dinuclear and trinuclear complexes results in a significant increase in their respective σg's in the visible spectral region. As a result, the ratio of σs/σg and σT/σg at each wavelength is significantly greater for the mononuclear complex than for the dinuclear and the trinuclear complexes.

KW - Cyclometalated platinum(II) 4,6-diphenyl-2,2′-bipyridyl complexes

KW - Excited-state lifetime

KW - Singlet excited-state absorption cross-section

KW - Triplet excited-state absorption cross-section

KW - Triplet quantum yield

KW - Z-scan

UR - http://www.scopus.com/inward/record.url?scp=70349419612&partnerID=8YFLogxK

U2 - 10.1016/j.jorganchem.2009.07.045

DO - 10.1016/j.jorganchem.2009.07.045

M3 - 文章

AN - SCOPUS:70349419612

SN - 0022-328X

VL - 694

SP - 3688

EP - 3691

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 23

ER -

Excited-state absorption of mono-, di- and tri-nuclear cyclometalated platinum 4,6-diphenyl-2,2′-bipyridyl complexes

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this