Optical Anisotropy of Chain Molecules. Theory of Depolarization of Scattered Light with Application ton‐Alkanes

1967 ◽  
Vol 47 (6) ◽  
pp. 1999-2007 ◽  
Author(s):  
R. L. Jernigan ◽  
P. J. Flory
Keyword(s):  
Optical Anisotropy ◽  
Scattered Light ◽  
Chain Molecules

Conformation and optical anisotropy of short chain molecules with mesogenic side groups

1986 ◽  
Vol 28 (12) ◽  
pp. 2768-2776
Author(s):  
I.N. Shtennikova ◽  
Ye.V. Korneyeva ◽  
G.F. Kolbina ◽  
S.V. Bushin ◽  
K.P. Smirnov ◽  
...  
Keyword(s):  
Optical Anisotropy ◽  
Short Chain ◽  
Chain Molecules

scholarly journals The structure of molecules in relation to their optical anisotropy.—Part II—Benzene and cyclohexane

1926 ◽  
Vol 110 (753) ◽  
pp. 123-133 ◽  
Keyword(s):  
Optical Anisotropy ◽  
Organic Molecules ◽  
Mutual Influence ◽  
Scattered Light ◽  
Incident Radiation ◽  
Fair Agreement ◽  
Electrical Field ◽  
Triatomic Molecules ◽  
Structure Of Molecules ◽  
Straight Line

In Part I the view was advanced that the optical anisotropy of the molecules of a gas which is evidenced by the depolarisation of the light scattered by it can to a large extent be attributed to the mutual influence of the doublets induced in the different atoms of the molecule by the electrical field of the incident radiation. Assuming that each atom is isotropic, and assuming the refractivity and anisotropy of the molecules of hydrogen, oxygen and nitrogen, the atomic refractivity and the distance apart between the “optical centres” was calculated in these cases. Extending the treatment to the case of triatomic molecules with the three atoms in a straight line, and using the previously obtained values for the atomic refractivities of nitrogen and oxygen and the diamond value of the atomic refractivity of carbon, the optical anistropies of the gases N 2 O, CO 2 and CS 2 were calculated. The corresponding values of the depolarisation of the transversely scattered light were found to be in fair agreement with experiment. In this paper the work is extended to the two organic molecules, benzene and cyclohexane.

The effect of the optical anisotropy of scattering media on the polarization state of scattered light

2006 ◽  
Vol 101 (5) ◽  
pp. 802-810 ◽  
Author(s):  
Yu. P. Sinichkin ◽  
D. A. Zimnyakov ◽  
D. A. Yakovlev ◽  
I. A. Ovchinnikova ◽  
A. V. Spivak ◽  
...  
Keyword(s):  
Optical Anisotropy ◽  
Scattered Light ◽  
Polarization State ◽  
Scattering Media

Particle size from optical anisotropy effects in scattered light

Polymer ◽  
1983 ◽  
Vol 24 (8) ◽  
pp. 991-994 ◽  
Author(s):  
J.C. Ravey ◽  
P. Mazeron
Keyword(s):  
Particle Size ◽  
Optical Anisotropy ◽  
Scattered Light

scholarly journals The structure of molecules in relation to their optical anisotropy.—Part I

1925 ◽  
Vol 107 (744) ◽  
pp. 684-693 ◽  
Keyword(s):  
Optical Anisotropy ◽  
Scattered Light ◽  
Incident Light ◽  
Incident Beam ◽  
Electric Vector ◽  
Scattering Of Light ◽  
Structure Of Molecules ◽  
Weak Component ◽  
Principal Directions

One of the most significant facts relating to the scattering of light in gases is the imperfection of polarisation of the light scattered in a direction perpendicular to the incident beam. The late Lord Rayleigh and Born explained this phenomenon as being due to the optical anisotropy of the molecule, that is, to the fact that the polarisation induced in a molecule depends on its orientation with respect to the electric vector in the incident light. Lord Rayleigh’s theory does not go into the question as to how the anistropy arises, but merely assumes that there are in each molecule three principal directions of vibration, along which the induced polarisations are different. If A, B, C are the moments induced in a molecule when its three principal directions are respectively along the direction of the electric vector in the incident light, then the ratio of the weak component to the strong in the transversely scattered light is given by r = 2 (A 2 + B 2 + C 2 ) - 2 (AB + BC + CA) / 4 (A 2 + B 2 + C 2 ) + AB + BC + CA. We now possess reliable measurements of the imperfection of polarisation in many gases and vapours, from the work of Lord Rayleigh and of Raman and Rao. Recently there has been carried out at Calcutta further measurement of the same quantity, in a series of organic vapours, by Mr. A. S. Ganesan. Some of these results are collected together in Table I.

Thermodynamic calculations of linear chain molecules using a SAFT model

2001 ◽  
Vol 99 (1) ◽  
pp. 65-76 ◽  
Author(s):  
Yiping Tang, Zhaohui Wang, Benjamin C.-Y.
Keyword(s):  
Linear Chain ◽  
Thermodynamic Calculations ◽  
Chain Molecules

Chemical potential and dimensions of chain molecules in athermal environments

1996 ◽  
Vol 89 (6) ◽  
pp. 1733-1754 ◽  
Author(s):  
FERNANDO ESCOBEDO ◽  
JUAN DE PABLO
Keyword(s):  
Chemical Potential ◽  
Chain Molecules
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