Pothanagandhi Nellepalli, Twinkal Patel, Minsoo P. Kim, Junyoung Park, Zhibin Ye, Hyun Wook Jung*, Hyunhyub Ko* and Jung Kwon Oh*  “Self-healable Triboelectric Nanogenerators based on Ionic Poly(Hindered Urea) Network Materials Cross-linked with Fluorinated Block Copolymers”, Poly. Chem. 2022, Accepted