title: Retraction: Fast and long-range triplet exciton diffusion in metal-organic frameworks for photon upconversion at ultralow excitation power.
authors.forename: Prasenjit
authors.initials: P
authors.lastname: Mahato
authors.forename: Angelo
authors.initials: A
authors.lastname: Monguzzi
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Yanai
authors.forename: Teppei
authors.initials: T
authors.lastname: Yamada
authors.forename: Nobuo
authors.initials: N
authors.lastname: Kimizuka