Picosecond time-resolved infrared investigation into the nature of the lowest excited state of fac-[Re(Cl)(CO)3(CO2Et-dppz)] (CO2Et-dppz = dipyrido[3,2a

2′,3′c]phenazine-11- carboxylic ethyl ester)

Marina K. Kuimova, David Grills, Pavel Matousek, Anthony W. Parker, Xue Zhong Sun, Michael Towrie, Michael W. George

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The photophysics of the fac-[Re(Cl)(CO)3(CO2Et-dppz)] (CO2Et-dppz = dipyrido[3,2a:2′,3′c]phenazine-11- carboxylic ethyl ester) was studied with picosecond time-resolved infrared (ps-TRIR) spectroscopy in metal carbonyl (2100-1800cm-1) and organic ester (1800-1600cm-1) spectral regions. The ps-TRIR spectra in both regions give evidence for the formation of a metal-to-ligand charge transfer (MLCT) excited state. The magnitude of ν(C≡O) shift in the metal carbonyl region of the excited state relative to those of the ground state allows the excited state to be described more precisely as a dπ(Re) → π* (phenazine) 3MLCT state.

Original languageEnglish
Pages (from-to)219-223
Number of pages5
JournalVibrational Spectroscopy
Volume35
Issue number1-2
DOIs
Publication statusPublished - Jun 17 2004

Fingerprint

Carbon Monoxide
Excited states
Esters
Metals
Infrared radiation
Ground state
Charge transfer
Infrared spectroscopy
Ligands
phenazine

Keywords

  • MLCT
  • Phenazine
  • Time-resolved

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Picosecond time-resolved infrared investigation into the nature of the lowest excited state of fac-[Re(Cl)(CO)3(CO2Et-dppz)] (CO2Et-dppz = dipyrido[3,2a : 2′,3′c]phenazine-11- carboxylic ethyl ester). / Kuimova, Marina K.; Grills, David; Matousek, Pavel; Parker, Anthony W.; Sun, Xue Zhong; Towrie, Michael; George, Michael W.

In: Vibrational Spectroscopy, Vol. 35, No. 1-2, 17.06.2004, p. 219-223.

Research output: Contribution to journalArticle

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abstract = "The photophysics of the fac-[Re(Cl)(CO)3(CO2Et-dppz)] (CO2Et-dppz = dipyrido[3,2a:2′,3′c]phenazine-11- carboxylic ethyl ester) was studied with picosecond time-resolved infrared (ps-TRIR) spectroscopy in metal carbonyl (2100-1800cm-1) and organic ester (1800-1600cm-1) spectral regions. The ps-TRIR spectra in both regions give evidence for the formation of a metal-to-ligand charge transfer (MLCT) excited state. The magnitude of ν(C≡O) shift in the metal carbonyl region of the excited state relative to those of the ground state allows the excited state to be described more precisely as a dπ(Re) → π* (phenazine) 3MLCT state.",
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AU - Matousek, Pavel

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