Copper Fluoride Luminescence during UV Photofragmentation of Bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II) in the Gas Phase

David Talaga, Jeffrey I. Zink

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

Abstract

Gas phase 308 and 350-370 nm photolysis of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II), Cu(hfac)2, produces CuF as well as copper atoms and dimers. These metal-containing fragments, identified by luminescence spectroscopy, are studied under a variety of gas phase conditions ranging from 1 bar in a static chamber to 10-4 mbar in a collision-free molecular beam. Copper atom and dimer luminescence is observed at the higher pressures, whereas at low pressures (total pressure no greater than the vapor pressure of the sample) exclusively CuF emission is observed. The a, A (ω = 0, 1, 2), B, and C excited states at 681.0, 567.6, and 505.1, and 491.7 nm are observed. The 3II0- component of the A state is observed for the first time. The CuF luminescence obeys a quadratic power law with 308 nm excitation. The partitioning of excess energy into fragment degrees of freedom is determined from the intensities of the emission lines. The vibrational and rotational temperatures of the CuF fragment are in excess of 1700 K. Mechanisms of CuF formation, comparisons with the free ligand and with other volatile copper complexes, and the implications for laser-assisted chemical vapor deposition are discussed.

Original languageEnglish
Pages (from-to)5050-5054
Number of pages5
JournalInorganic Chemistry
Volume35
Issue number17
StatePublished - 1 Dec 1996

Fingerprint

copper fluorides
Luminescence
Copper
Gases
luminescence
vapor phases
copper
fragments
Dimers
dimers
Atoms
Molecular beams
Photolysis
Vapor pressure
Excited states
vapor pressure
molecular beams
excitation
atoms
photolysis

Cite this

@article{9690a095c01441a2a68c56907eb03716,
title = "Copper Fluoride Luminescence during UV Photofragmentation of Bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II) in the Gas Phase",
abstract = "Gas phase 308 and 350-370 nm photolysis of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II), Cu(hfac)2, produces CuF as well as copper atoms and dimers. These metal-containing fragments, identified by luminescence spectroscopy, are studied under a variety of gas phase conditions ranging from 1 bar in a static chamber to 10-4 mbar in a collision-free molecular beam. Copper atom and dimer luminescence is observed at the higher pressures, whereas at low pressures (total pressure no greater than the vapor pressure of the sample) exclusively CuF emission is observed. The a, A (ω = 0, 1, 2), B, and C excited states at 681.0, 567.6, and 505.1, and 491.7 nm are observed. The 3II0- component of the A state is observed for the first time. The CuF luminescence obeys a quadratic power law with 308 nm excitation. The partitioning of excess energy into fragment degrees of freedom is determined from the intensities of the emission lines. The vibrational and rotational temperatures of the CuF fragment are in excess of 1700 K. Mechanisms of CuF formation, comparisons with the free ligand and with other volatile copper complexes, and the implications for laser-assisted chemical vapor deposition are discussed.",
author = "David Talaga and Zink, {Jeffrey I.}",
year = "1996",
month = "12",
day = "1",
language = "English",
volume = "35",
pages = "5050--5054",
journal = "Inorganic Chemistry",
issn = "0020-1669",
publisher = "American Chemical Society",
number = "17",

}

Copper Fluoride Luminescence during UV Photofragmentation of Bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II) in the Gas Phase. / Talaga, David; Zink, Jeffrey I.

In: Inorganic Chemistry, Vol. 35, No. 17, 01.12.1996, p. 5050-5054.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Copper Fluoride Luminescence during UV Photofragmentation of Bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II) in the Gas Phase

AU - Talaga, David

AU - Zink, Jeffrey I.

PY - 1996/12/1

Y1 - 1996/12/1

N2 - Gas phase 308 and 350-370 nm photolysis of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II), Cu(hfac)2, produces CuF as well as copper atoms and dimers. These metal-containing fragments, identified by luminescence spectroscopy, are studied under a variety of gas phase conditions ranging from 1 bar in a static chamber to 10-4 mbar in a collision-free molecular beam. Copper atom and dimer luminescence is observed at the higher pressures, whereas at low pressures (total pressure no greater than the vapor pressure of the sample) exclusively CuF emission is observed. The a, A (ω = 0, 1, 2), B, and C excited states at 681.0, 567.6, and 505.1, and 491.7 nm are observed. The 3II0- component of the A state is observed for the first time. The CuF luminescence obeys a quadratic power law with 308 nm excitation. The partitioning of excess energy into fragment degrees of freedom is determined from the intensities of the emission lines. The vibrational and rotational temperatures of the CuF fragment are in excess of 1700 K. Mechanisms of CuF formation, comparisons with the free ligand and with other volatile copper complexes, and the implications for laser-assisted chemical vapor deposition are discussed.

AB - Gas phase 308 and 350-370 nm photolysis of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II), Cu(hfac)2, produces CuF as well as copper atoms and dimers. These metal-containing fragments, identified by luminescence spectroscopy, are studied under a variety of gas phase conditions ranging from 1 bar in a static chamber to 10-4 mbar in a collision-free molecular beam. Copper atom and dimer luminescence is observed at the higher pressures, whereas at low pressures (total pressure no greater than the vapor pressure of the sample) exclusively CuF emission is observed. The a, A (ω = 0, 1, 2), B, and C excited states at 681.0, 567.6, and 505.1, and 491.7 nm are observed. The 3II0- component of the A state is observed for the first time. The CuF luminescence obeys a quadratic power law with 308 nm excitation. The partitioning of excess energy into fragment degrees of freedom is determined from the intensities of the emission lines. The vibrational and rotational temperatures of the CuF fragment are in excess of 1700 K. Mechanisms of CuF formation, comparisons with the free ligand and with other volatile copper complexes, and the implications for laser-assisted chemical vapor deposition are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0000105086&partnerID=8YFLogxK

M3 - Article

VL - 35

SP - 5050

EP - 5054

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 17

ER -