Oxygen absorption spectrum

Figure 13.14 Molecular oxygen absorption spectrum over the spectrum of a free-running ArF exciplex laser. The absorption peaks in the molecular oxygen spectrum are Schumann-Runge absorption bands. (Courtesy of R. Kunz and R. Dammel...

Table 27. IR absorption spectrum and band assignment of Nb02F43 (D4h) in the compound K.2NaNb02F4 (F - occurs in tran -position relative to the oxygen ion). Reproduced from [195], K. Dehnike, G. Pausewang, W. Rudorff, Z. Anorg. Allg. Chem. 366 (1969) 64, Copyright 1969, with permission of Wiley-VCH.

The reversible oxygenation of Fe(DMG)2 (B)2 in aqueous dioxane solution, as monitored by reversible changes in the visible absorption spectrum and manometric oxygen evolution, has been reported (55), but in a more recent study 54) it was not possible to confirm the earlier findings. However it was established that there was a slow irreversible... 

Fig. 14. Action spectra for light-induced metabolic responses. (1) oxygen uptake in Chlorella200, and carotenogenesis of (S) Neurospora44), (4) Mycobacterium91), (5) Fusarium14l Curve (2) shows the absorption spectrum of an extract of Mycobacterium possibly containing the bluelight photoreceptor112). Compare curve (2) to the action spectrum (4)...

Bifluorophores consisting of two different fluorescent dyes linked by a flexible spacer containing heteroatoms (oxygen, nitrogen or sulfur atoms) can bind cations. This results in a decrease of the distance between the two fluorophores and, consequently, to an increase in efficiency of photoinduced energy transfer between the two moieties (Figure 2.13) provided that the emission spectrum of the donor (D) overlaps the absorption spectrum of the acceptor (A).(36) The transfer efficiency depends on the distance according to Forster s theory ... 

FlO. 4. Vacuum-ultra violet absorption spectrum of oxygen gas. The positions at which Rydberg series convergence limits occur are marked X—X. (We are indebted to Professor W. C. Price for this photograph.)... 

Chlorine dioxide gas is unstable and can rapidly decompose at high concentrations. It also decomposes rapidly to chlorine and oxygen with exposure to mild heat. Chlorine dioxide will decompose upon exposure to sunlight (Vogt et al. 1986). The gas-phase absorption spectrum for chlorine dioxide is the same as in aqueous solution (Kaczur and Cawfield 1993). The primary photochemical reaction of CIO2 in the gas phase corresponds to homolytic scission of one of the chlorine-oxygen bonds (i.e., C102 CIO +... 

It was found that the absorption spectrum of the apatite is characterized by the bands at 775 and 850 nm, which are close to reabsorption bands in the same sample and according to absorption in atmosphere may be connected with molecular oxygen and water, correspondingly (Eig. 5.68). 

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