Solvent dependent photophysics of fac-[Re(CO)3(11,12-X 2dppz)(py)]+ (X = H, F or Me)

Joanne Dyer; Caitriona M. Creely; J. Carlos Penedo; David C. Grills; Sarah Hudson; Pavel Matousek; Anthony W. Parker; Michael Towrie; John M. Kelly; Michael W. George

doi:10.1039/b618651c

Solvent dependent photophysics of fac-[Re(CO)₃(11,12-X ₂dppz)(py)]⁺ (X = H, F or Me)

Joanne Dyer, Caitriona M. Creely, J. Carlos Penedo, David C. Grills, Sarah Hudson, Pavel Matousek, Anthony W. Parker, Michael Towrie, John M. Kelly, Michael W. George

Research output: Journal Publication › Article › peer-review

30 Citations (Scopus)

Abstract

The photophysical properties of [Re(CO)₃(dppz)(py)]⁺ (dppz = dipyrido-[3,2-a:2′,3′-c] phenazine) (1) and its 11,12 substituted derivatives [Re(CO)₃(dppzMe₂)(py)]⁺ (2) and [Re(CO)₃(dppzF₂)(py)]⁺ (3) have been examined in organic and aqueous environments using phosphorescence and picosecond transient visible and infrared absorption spectroscopic methods. The roles of the intraligand IL(π-π*) and metal-to-ligand charge transfer MLCT(phz) excited states are evaluated and used to explain the major effect of difluoro-substitution, which is particularly remarkable in water, where the excited state of [Re(CO)₃(dppzF₂)(py)] ⁺ (3) is strongly quenched.

Original language	English
Pages (from-to)	741-748
Number of pages	8
Journal	Photochemical and Photobiological Sciences
Volume	6
Issue number	7
DOIs	https://doi.org/10.1039/b618651c
Publication status	Published - 2007
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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@article{ca75ee27f0ac4228bfebf0fb1666febe,

title = "Solvent dependent photophysics of fac-[Re(CO)3(11,12-X 2dppz)(py)]+ (X = H, F or Me)",

abstract = "The photophysical properties of [Re(CO)3(dppz)(py)]+ (dppz = dipyrido-[3,2-a:2′,3′-c] phenazine) (1) and its 11,12 substituted derivatives [Re(CO)3(dppzMe2)(py)]+ (2) and [Re(CO)3(dppzF2)(py)]+ (3) have been examined in organic and aqueous environments using phosphorescence and picosecond transient visible and infrared absorption spectroscopic methods. The roles of the intraligand IL(π-π*) and metal-to-ligand charge transfer MLCT(phz) excited states are evaluated and used to explain the major effect of difluoro-substitution, which is particularly remarkable in water, where the excited state of [Re(CO)3(dppzF2)(py)] + (3) is strongly quenched.",

author = "Joanne Dyer and Creely, {Caitriona M.} and Penedo, {J. Carlos} and Grills, {David C.} and Sarah Hudson and Pavel Matousek and Parker, {Anthony W.} and Michael Towrie and Kelly, {John M.} and George, {Michael W.}",

year = "2007",

doi = "10.1039/b618651c",

language = "English",

volume = "6",

pages = "741--748",

journal = "Photochemical and Photobiological Sciences",

issn = "1474-905X",

publisher = "Royal Society of Chemistry",

number = "7",

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T1 - Solvent dependent photophysics of fac-[Re(CO)3(11,12-X 2dppz)(py)]+ (X = H, F or Me)

AU - Dyer, Joanne

AU - Creely, Caitriona M.

AU - Penedo, J. Carlos

AU - Grills, David C.

AU - Hudson, Sarah

AU - Matousek, Pavel

AU - Parker, Anthony W.

AU - Towrie, Michael

AU - Kelly, John M.

AU - George, Michael W.

PY - 2007

Y1 - 2007

N2 - The photophysical properties of [Re(CO)3(dppz)(py)]+ (dppz = dipyrido-[3,2-a:2′,3′-c] phenazine) (1) and its 11,12 substituted derivatives [Re(CO)3(dppzMe2)(py)]+ (2) and [Re(CO)3(dppzF2)(py)]+ (3) have been examined in organic and aqueous environments using phosphorescence and picosecond transient visible and infrared absorption spectroscopic methods. The roles of the intraligand IL(π-π*) and metal-to-ligand charge transfer MLCT(phz) excited states are evaluated and used to explain the major effect of difluoro-substitution, which is particularly remarkable in water, where the excited state of [Re(CO)3(dppzF2)(py)] + (3) is strongly quenched.

AB - The photophysical properties of [Re(CO)3(dppz)(py)]+ (dppz = dipyrido-[3,2-a:2′,3′-c] phenazine) (1) and its 11,12 substituted derivatives [Re(CO)3(dppzMe2)(py)]+ (2) and [Re(CO)3(dppzF2)(py)]+ (3) have been examined in organic and aqueous environments using phosphorescence and picosecond transient visible and infrared absorption spectroscopic methods. The roles of the intraligand IL(π-π*) and metal-to-ligand charge transfer MLCT(phz) excited states are evaluated and used to explain the major effect of difluoro-substitution, which is particularly remarkable in water, where the excited state of [Re(CO)3(dppzF2)(py)] + (3) is strongly quenched.

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DO - 10.1039/b618651c

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AN - SCOPUS:34447123270

SN - 1474-905X

VL - 6

SP - 741

EP - 748

JO - Photochemical and Photobiological Sciences

JF - Photochemical and Photobiological Sciences

IS - 7

ER -

Solvent dependent photophysics of fac-[Re(CO)₃(11,12-X ₂dppz)(py)]⁺ (X = H, F or Me)

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