Near‐Infrared‐to‐Visible Photon Upconversion by Introducing an S−T Absorption Sensitizer into a Metal‐Organic Framework
Biplab Joarder, Arijit Mallick, Yōichi Sasaki, Mika Kinoshita, Rena Haruki, Yusuke Kawashima, Nobuhiro Yanai, Nobuo Kimizuka
Abstract
Abstract Triplet‐triplet annihilation‐based photon upconversion (TTA‐UC) of near‐infrared (NIR) light to visible light in the solid‐state remains as a great challenge due to the sensitizer aggregation that impedes the efficient triplet energy transfer. Herein, we successfully introduce a molecular sensitizer exhibiting direct singlet‐to‐triplet (S–T) absorption into a new emitter‐based metal‐organic framework (MOF) to achieve an efficient triplet sensitization and a NIR‐to‐visible TTA‐UC in the solid‐state.
Topics & Concepts
Photon upconversionPhotochemistryVisible spectrumAbsorption (acoustics)InfraredSinglet oxygenTriplet stateSinglet stateMaterials scienceEnergy transferOptoelectronicsAnnihilationPhotonChemistryMoleculeDopingOpticsMolecular physicsPhysicsAtomic physicsExcited stateOxygenComposite materialOrganic chemistryQuantum mechanicsLuminescence and Fluorescent MaterialsNanoplatforms for cancer theranosticsMetal-Organic Frameworks: Synthesis and Applications