Structural properties quantum triplet correlations

The optical and PL spectroscopies have been undertaken to understand the structure-property correlations of this important family of triplet-emitting polymers. The red shift in the absorption features upon coordination of the metal groups is consistent with there being an increase in conjugation length over the molecule through the metal center. The trade-olf relationship between the phosphorescence parameters (such as emission wavelength, quantum yield, rates of radiative and nonradiative decay) and the optical gap will be formulated. For systems with third-row transition metal chromophores in which the ISC efficiency is close to 100%,76-78 the phosphorescence radiative (kr)y, and nonradiative (/cm)p decay rates are related to the measured lifetime of triplet emission (tp) and the phosphorescence quantum yield ([Pg.300]

Closely related to the QHS fluid is the QHSY fluid. In this regard, one notes that while QHS state points can be characterized with two parameters, that is, (Ag, pI ), QHSY state points need two additional parameters, which are the de Boer quantumness /C=hl(me(T and the inverse range of the attraction k = kdifferent ranges of conditions within (0.2 < A < 0.6 0.27 pi 0.5). Use of direct correlation functions (BDH) was also made, and its reliability to identify the onset of critical behavior was clearly stated [108]. These QHSY studies covered the following issues mechanical and pair structural properties [108] the asymptotic behavior of the pair radial correlations, with a view to the existence of FW lines [159] and the features of triplet correlations in Fourier space [161]. 

Due to the Pauli principle, only n-p pairs can have their spins aligned and otherwise have the same quantum numbers. These pairs are referred to as short-range correlated (SRC) pairs and their presence strongly affects the properties of cold, dense nuclear matter, such as that found in neutron stars. This nucleon-nucleon interaction is also required to explain the fact that the n-p spin triplet is bound (i.e., the deuteron) while the n-n and p-p, required singlets, are not. Consideration of n-p interactions is also essential to understand the evolution of the phenomenological spin-orbit interaction as a function of n/p asymmetry (Otsuka 2005), one of the most discussed topics in nuclear structure research today. 

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