“Synthesis and phase transition behavior of well-defined poly(arylene ether sulfone)s by chain growth condensation polymerization in organic mediaā€¯ by Jinhee Lee, Byungyong Lee, Jeyoung Park, Jaehoon Oh, Taehyoung Kim, Myungeun Seo, and Sang Youl Kim just appeared in Polymer.
Link: https://www.sciencedirect.com/science/article/pii/S0032386118307523