Dependence of N-I transition on polymer chain length

It is worth pointing out that after expanding the free energy in the Landau-de Gennes form and taking into account the entropic contribution of the free ends of the chain (contrary to circle polymers) and the n = 2 term in 

Equation 2.110, we obtain the analytical expression for the pseudo-second-phase-transition temperature (Wang, 1995a) 

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