Katharina Landfester*, Stanislav Baluschev*, et al. Max Planck Institute for Polymer Research, Germany & Sofia University, Bulgaria, ACS Omega 2021, 6, 29, 18860-18867,
In this work, the authors realize all-optical temperature sensing within the narrow optical window for tissue by using the process of triplet-triplet annihilation photon energy up-conversion (TTA-UC) as a sensing tool.