FT pulsed-ESR/electron spin transient nutation of hyperbranched polycationic organic high-spin polymers

Higher-spin pi multiradical sites in doped polyarylamine polymers

“…After doping they should contain a non-interacting polydisperse population of S = ¹ 2, 1, 3 -2 , 2, etc., spin clusters and, for the 'solution doped' polymers such a spread of spins has been confirmed by electron spin nutation methods. 24 There is no ideal way of characterising the distribution of spin states but, provided the spin clusters are non-interacting, comparison of the experimental dependence of magnetisation on applied field to theoretical Brillouin functions for monodisperse S = ¹ 2, 1, 3 -2 , 2, etc., spin systems can be used as an empirical measure and as a method of comparing one polymer with another. 17 This was the approach adopted.…”