Cell design for picosecond time-resolved infrared spectroscopy in high-pressure liquids and supercritical fluids

Xue Zhong Sun; Peter Portius; David C. Grills; Alexander J. Cowan; Michael W. George

doi:10.1366/000370208783412537

Cell design for picosecond time-resolved infrared spectroscopy in high-pressure liquids and supercritical fluids

Xue Zhong Sun, Peter Portius, David C. Grills, Alexander J. Cowan, Michael W. George

Research output: Journal Publication › Article › peer-review

6 Citations (Scopus)

Abstract

The design of a new high-pressure infrared (IR) cell for carrying out picosecond time-resolved infrared (ps-TRIR) spectroscopy in supercritical fluids is described. We have employed thin (2 mm) MgF₂ windows in order to overcome possible undesirable nonlinear optical effects caused by the extremely high peak powers of ultrashort ultraviolet (UV)/visible pulses. The design of our cell allows for the study of systems at pressures of up to 5500 psi at temperatures of up to approximately 50°C. The MgF₂ windows enable the excitation of samples with both UV and visible light pulses and these windows are transparent across much of the midinfrared region. We have demonstrated the use of this cell by examining the photochemistry of Fe(CO) ₅ in supercritical Kr (scKr).

Original language	English
Pages (from-to)	24-29
Number of pages	6
Journal	Applied Spectroscopy
Volume	62
Issue number	1
DOIs	https://doi.org/10.1366/000370208783412537
Publication status	Published - Jan 2008
Externally published	Yes

Keywords

Organometallic chemistry
Picosecond time-resolved infrared spectroscopy
Spin-state changes
Super-critical fluids

ASJC Scopus subject areas

Instrumentation
Spectroscopy

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10.1366/000370208783412537

Cite this

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title = "Cell design for picosecond time-resolved infrared spectroscopy in high-pressure liquids and supercritical fluids",

abstract = "The design of a new high-pressure infrared (IR) cell for carrying out picosecond time-resolved infrared (ps-TRIR) spectroscopy in supercritical fluids is described. We have employed thin (2 mm) MgF2 windows in order to overcome possible undesirable nonlinear optical effects caused by the extremely high peak powers of ultrashort ultraviolet (UV)/visible pulses. The design of our cell allows for the study of systems at pressures of up to 5500 psi at temperatures of up to approximately 50°C. The MgF2 windows enable the excitation of samples with both UV and visible light pulses and these windows are transparent across much of the midinfrared region. We have demonstrated the use of this cell by examining the photochemistry of Fe(CO) 5 in supercritical Kr (scKr).",

keywords = "Organometallic chemistry, Picosecond time-resolved infrared spectroscopy, Spin-state changes, Super-critical fluids",

author = "Sun, {Xue Zhong} and Peter Portius and Grills, {David C.} and Cowan, {Alexander J.} and George, {Michael W.}",

year = "2008",

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language = "English",

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AU - Sun, Xue Zhong

AU - Portius, Peter

AU - Grills, David C.

AU - Cowan, Alexander J.

AU - George, Michael W.

PY - 2008/1

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AB - The design of a new high-pressure infrared (IR) cell for carrying out picosecond time-resolved infrared (ps-TRIR) spectroscopy in supercritical fluids is described. We have employed thin (2 mm) MgF2 windows in order to overcome possible undesirable nonlinear optical effects caused by the extremely high peak powers of ultrashort ultraviolet (UV)/visible pulses. The design of our cell allows for the study of systems at pressures of up to 5500 psi at temperatures of up to approximately 50°C. The MgF2 windows enable the excitation of samples with both UV and visible light pulses and these windows are transparent across much of the midinfrared region. We have demonstrated the use of this cell by examining the photochemistry of Fe(CO) 5 in supercritical Kr (scKr).

KW - Organometallic chemistry

KW - Picosecond time-resolved infrared spectroscopy

KW - Spin-state changes

KW - Super-critical fluids

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Cell design for picosecond time-resolved infrared spectroscopy in high-pressure liquids and supercritical fluids

Abstract

Keywords

ASJC Scopus subject areas

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