The difference of dipole moments between the excited and ground state was determined to be 1.9 and 1.8 Debye for 9-acetoxyanthracene and 10-phenyl-9-acetoxyanthracene from the frequency shifts of absorption and emission spectra. The polarizability of these two compounds is 36×10 24 and 54×10...
The electric properties of excited states of interest in this study, namely dipole moments and polarizability, can be expressed compactly as the difference between the excited- and ground-state properties, i.e., excess dipole moment (Δμ), and the isotropic excess polarizability Δαave. These ...
Electronegativity equalization considerations applied to diatomics and ABn molecules of Cnv, symmetry lead to a simple relationship between the static molecular dipole moment m0, the static polarizability α along the principal axis and the electronegativity difference ΔX between atoms A and B. The rela...
On the other hand, the measured internal modes of motion are apparent, depending on the difference in the refractive index increments between A and B components within a particle. 2.10.2.3.2 Polydispersity in molecular mass Consider a dilute one-component solution of particles with a molecular ...
and as a result, the peaks could be assigned to forbidden transitions\({E}_{21}\)and\({E}_{12}\)(see the inset of Fig.4b). As we know, for a symmetric QW, the dipole selection rule doesn’t allow optical transitions with odd\(\Delta l\)(\(\Delta l\)is the difference betwee...
The vibration of the molecule dipoles between the base state exhibiting a first dipole moment and the polarity excitation state exhibiting exhibiting a dipole moment different therefrom is made possible. The linear polymer of the optical parts contain the repeating unit derived from the vinyl addition...
By correlating satellite intensity with the average polarizability and the difference between the electronegativities of anion and cation it is shown that ... T Robert - 《Chemical Physics》 被引量: 74发表: 1975年 Correlation between dielectric constant and chemical structure of sodium silicate glass...
and small cations used in the precursor solution. Highernvalues could be obtained, but always mixed with other phases. Methylammonium, with its large dipole moment of 2.3 D39, and cesium, with no dipole moment, were used as small cation inclusions. The optical absorption spectra for films ofn...
, each of which acts as a point particle located at the nucleus and responds to an electric field by only dipole-moment induction, which is a linear function of local field. If a field Cartesian component because of permanent multipole moments is Eia, induced moment ia in atom i is: ∑...
This technique gives the difference between the polarizability of an atom and a three-fold charged ion on the surface. It was assumed that the polarizability of the ion is small compared to that of the atom. This assumption is, however, not yet proved. Thus it is desirable to have an ...