Near‐IR Luminescent YbIII Coordination Polymers Composed of Pyrene Derivatives for Thermostable Oxygen Sensors

Abstract Oxygen‐sensitive and near‐infrared (NIR) luminescent Yb III coordination polymers incorporating ligands based on pyrene derivatives were synthesized: Yb III –TBAPy and Yb III –TIAPy (TBAPy: 1,3,6,8‐tetrakis( p ‐benzoate)pyrene; TIAPy: 1,3,6,8‐tetrakis(3,5‐isophthalic acid)pyrene). The coordination structures of these materials have been characterized by means of electrospray ionization mass spectrometry, X‐ray diffraction analysis, and thermogravimetric analysis. Moreover, the porous structure of Yb III –TIAPy has been evaluated by measuring its N 2 adsorption isotherm. The NIR luminescence properties of Yb III –TBAPy and Yb III –TIAPy have been examined by acquiring emission spectra and determining emission lifetimes under air or argon and in vacuo. Yb III –TIAPy exhibited high thermal stability (with a decomposition temperature of 400 °C), intense luminescence (with an emission quantum yield under argon of 6.6 %), and effective oxygen‐sensing characteristics. These results suggest that NIR luminescent Yb III coordination polymers prepared using pyrene derivatives could have applications in novel thermo‐stable oxygen sensors.