Table 1. Molecular parameters of the a-PS samples under θ-solvent conditions.

a-PS sample	Mp[MDa]	Mw/Mn	n	LC [μm]	N	lp[nm]	[nm]	Rg[nm]	L2	c* [wt.%]
PS7	6.9	1.09	66346	16.6	6840	2.43	201	82	6821	0.5
PS16	16.2	1.07	155769	38.9	16059	2.43	308	126	15951	0.32

The peak molecular weight is M_p and the sample polydispersity is given by M_w/M_n, where M_w and M_n are the weight and number averaged molecular weights, respectively. The number of repeat units is n = M_p/m, where m = 104 Da is the monomer molecular weight. The contour length L_C = nl_m, where l_m = 0.25 nm is the monomer length. The characteristic ratio , where N is the number of equivalent segments in an ideal chain and l_p is the persistence length. The ensemble-averaged equilibrium end-to-end distance of the random coil is , where R_g is the equilibrium radius of gyration. An extensibility parameter can be defined as . The characteristic concentration for overlap of polymer chains is found using the formula , where N_A is Avogadro’s constant⁸³.