Materiales fotocrómicos

Un material fotocrómico que comprende un producto de reacción de: (a) al menos un monómero cíclico de apertura de anillo elegido de un éster cíclico y un carbonato cíclico; y (b) un iniciador fotocrómico. Various non-limiting embodiments disclosed herein related to photochromic materials comprising the reaction product of (a) at least one ring-opening cyclic monomer, and (b) a photochromic initiator. Other non-limiting embodiments related to photochromic materials represented by: wherein S' comprises the at least one ring-opened cyclic monomer as set forth herein. Other non-limiting embodiments related to photochromic compositions, optical elements, and methods of inhibiting migration of a photochromic material in a polymeric material using the photochromic materials disclosed herein. Methods of making such photochromic materials, compositions, and optical elements are also disclosed.