In:
Applied Spectroscopy, SAGE Publications, Vol. 69, No. 5 ( 2015-05), p. 519-524
Abstract:
The photochemistry and photophysics of metal carbonyl compounds (W(CO) 6 ,Cp*Rh(CO) 2 (Cp* = η 5 -C 5 Me 5 ), and fac-[Re(CO) 3 (4,4'-bpy) 2 Br] [bpy = bipyridine] ) have been examined on the nanosecond timescale using a time-resolved infrared spectrometer with an external cavity quantum cascade laser (QCL) as the infrared source. We show the photochemistry of W(CO) 6 in alkane solution is easily monitored, and very sensitive measurements are possible with this approach, meaning it can monitor small transients with absorbance changes less than 10- 6 DOD. The C–H activation of Cp*Rh(CO)(C 6 H 12 )to form Cp*Rh(CO)(C 6 H 11 )H occurs within the first few tens of nanoseconds following photolysis, and we demonstrate that kinetics obtained following deconvolution are in excellent agreement with those measured using an ultrafast laser-based spectrometer. We also show that the high flux and tunability of QCLs makes them suited for solid-state and time-resolved measurements.
Type of Medium:
Online Resource
ISSN:
0003-7028
,
1943-3530
Language:
English
Publisher:
SAGE Publications
Publication Date:
2015
detail.hit.zdb_id:
1474251-2
SSG:
11
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