Transitions dipole strength

The Temperature Dependence of the Angle Relation, Transition Dipole Strength Ratio, and Transition Dipole Orientation of the Chromophores in the K26.Phe-a RCs... 

There are difficulties associated with the use of ordinary electronic absorption spectra of lanthanide complexes in solution to provide detailed information regarding coordination number and geometry. However, difference spectra versus NdCl3 are reported for Nd3+-ligand (L) solutions for the 4/9/2— -4G5/2, 4G7,2 transitions (L = dipicolinate, oxydiacetate, iminodiacet-ate, malate, methyliminodiacetate and Ar,Ar -ethylenebis Af-(o-hydroxyphenyl)glycinate ). Hypersensitive behaviour was examined and transition dipole strengths were discussed in terms of the nature of the complex species present.431... 

Figure 27). The associated electric transition dipole strengths are 2.7 xlO36 and 88 xlO36 (cgs units), respectively.[1] In composite systems, where two anthracenes are fused to bicyclo[2.2.2]octane (Figure 27), the intense long axis-polarized transition dipoles are... 

Fig. 10.3 Time dependence of continuum coefficients at center of absorption spectrum for narrow absorption band, r, = 50 cm"1. Other parameters are pulse s bandwidth = 120 cm"1, peak intensity = 0.05 a.u., transition dipole strength 5.7 x 10"5. (Taken from Fig. 3, Ref. l326].)...

In the context of the "antitrap" model It Is Interesting to note that chib In PSII antenna displays a Qy transition dipole strength weaker than that of chla (10), In analogy with the situation In organic solvents (19). This low Qy absorption "efficiency", difficult to understand In terms of the light harvesting economy, can be rationalised by the "antitrap" hypothesis. In this case the low chib Qy transition dipole strength would considerably enhance the "antitrap" properties of this chlorophyll species. 

In organic molecules, the high hyperpolarizabilities result from high transition dipole strengths originating from tt — tt transitions. Previous calculations for cyclic phosphazenes have shown that the dominant optical characteristics are n — 7T electronic transitions, which have notoriously weak transition strengths, and a large [46]. The common characteristics of the linear and cyclic phospho-... 

Fig. 3.21 Computationtii trimer models of hydrogen-bonded systems for (a) nylon 6 and (b) nylon 6/6 with the transition dipole strengths [10]...

In the case of narrow absorption bands, due to signal-to-noise considerations, it is better to report the area of the peak Je(p)dv (V are wavenumbers in cm ), which is proportional to the peak intensity. Two other quantities, which can be reported instead of e, are the transition dipole strength D and the oscillator strength P, to which they are related by the following two equations [53]. 

---