A material based on a three-dimensional –Fe–N≡C–Mo– anionic framework that hosts a Cs+ cation in every other pore has been shown to exhibit superionic conductivity, despite its polar crystal structure. It also exhibits second harmonic generation (SHG)—usually observed in insulators—and its ionic conductivity was reversibly altered under light irradiation.
- Shin-ichi Ohkoshi
- Kosuke Nakagawa
- Asuka Namai
