Aromatic ketones as standards for singlet molecular oxygen photosensitization. Time-resolved photoacoustic and near-IR emission studies

1996 ◽  
Vol 97 (1-2) ◽  
pp. 11-18 ◽  
Author(s):  
Cristina Martí ◽  
Oriol Jürgens ◽  
Oriol Cuenca ◽  
Mercè Casals ◽  
Santi Nonell
Keyword(s):  
Molecular Oxygen ◽  
Singlet Molecular Oxygen ◽  
Time Resolved ◽  
Aromatic Ketones ◽  
Near Ir ◽  
Ir Emission ◽  
Emission Studies

Cholesterol Hydroperoxides Generate Singlet Molecular Oxygen [O2(1Δg)]: Near-IR Emission,18O-Labeled Hydroperoxides, and Mass Spectrometry

2011 ◽  
Vol 24 (6) ◽  
pp. 887-895 ◽  
Author(s):  
Miriam Uemi ◽  
Graziella E. Ronsein ◽  
Fernanda M. Prado ◽  
Flávia D. Motta ◽  
Sayuri Miyamoto ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Molecular Oxygen ◽  
Singlet Molecular Oxygen ◽  
Near Ir ◽  
Ir Emission

scholarly journals Time-resolved confocal microscopy using lanthanide centred near-IR emission

RSC Advances ◽  
2015 ◽  
Vol 5 (86) ◽  
pp. 70282-70286 ◽  
Author(s):  
Zhiyu Liao ◽  
Manuel Tropiano ◽  
Stephen Faulkner ◽  
Tom Vosch ◽  
Thomas Just Sørensen
Keyword(s):  
Confocal Microscopy ◽  
Arrival Time ◽  
Silica Particles ◽  
Luminescence Lifetime ◽  
High Contrast ◽  
Time Resolved ◽  
Near Ir ◽  
Nir Imaging ◽  
Fast Acquisition ◽  
Ir Emission

Time-resolved NIR imaging of lanthanide coated silica particles using Photon Arrival Time Imaging allows fast acquisition of high contrast images based on the probe luminescence lifetime.

Time-Resolved Pulsed FT-IR Emission Studies of Photochemical Reactions

1993 ◽  
Vol 47 (9) ◽  
pp. 1438-1445 ◽  
Author(s):  
D. E. Heard ◽  
R. A. Brownsword ◽  
D. G. Weston ◽  
G. Hancock
Keyword(s):  
Plasma Etching ◽  
Infrared Emission ◽  
Photochemical Reactions ◽  
Quantum Yields ◽  
Time Resolved ◽  
Ion Plasma ◽  
Ft Ir ◽  
Ir Emission ◽  
Product Species ◽  
Emission Studies

A time-resolved Fourier transform emission spectrometer, operating in the stop-scan mode, is demonstrated as an inexpensive and versatile instrument for observation of infrared vibrational chemiluminescence. The entire evolution of an emission spectrum is obtained from a single scan of the interferometer, with a spectral and temporal resolution of 2 cm−1 and 10 ns, respectively. Results are presented for a number of radical-radical reactions studied by this technique, where emission from highly excited CO, HF, CO2, and N2O is observed. Measurements include nascent vibrational distributions, quantum yields for branching into different product channels, and bimolecular rate constants for the production and vibrational relaxation of product species. Experiments at low total pressure enable nascent vibrational and rotational distributions to be found for the HF fragment of the CO2 laser photolysis of 1,1-chlorofluoroethylene. In addition, time-resolved spectra of HF, CO, CO2, CF4, and CHF3 are demonstrated for infrared emission observed from a reactive ion plasma etching chamber.

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