2022, Vol.8 No.3-4 The cover picture shows novel fluorenyl- orphyrins serving as charge trapping elements. With steric hin-drance building blocks of fluorene units, 2Flu-TPP presents highly nonplanar 3-dimensional structure which could effectively inhibit molecular packing and reduce the formation of leakage current paths. High-performance organic field effect transistor memory based on solu-tion-pro- cessing 2Flu-TPP element is achieved. More details are discussed in the article by Xie et al. on page 220006.