Abstract
AbstractWe first calculate the steady‐state birefringence, expressed in the form of specific Kerr constant, Ksp, of rigid, bent‐rod macromolecules. Equations are derived for Ksp as a function of the geometric and electro‐optical parameters. We also consider flexibly hinged rods and evaluate Ksp for them by averaging over the angle between the two arms, ϕ. Next, we turn to the time decay of the electric birefringence. The decay function for rigid bent rods is a sum of three exponential terms, and a procedure for their calculation is indicated. We observe that single‐exponential decays can be found for ϕ > 90° or ϕ < 60°, in spite of the high electro‐optical and hydrodynamic anisotropy of the macromolecule. Special attention is paid to the case of rods with equal arms.
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