Macromol. Rapid Commun. 16/2016.

Front Cover: A polymer with triazoline located in the backbone is synthesized by polyaddition of an azide‐containing norbornene‐based monomer through a strain‐promoted cycloaddition reaction without any catalyst. As a unique feature, elimination of N2 from the five‐membered ring of triazoline caused by light or heat affords a chance to form a highly reactive polymer, such as with aziridine moieties, which may find promising applications in the industrial production of reactive polymer resins. Further details can be found in the article by X. J. Zhang, Q. Zhang,* Y. Z. Wu, C. Feng, C. Xie, X. D. Fan, and P. F. Li on page 1311. [ABSTRACT FROM AUTHOR]