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Activation of TADF in Photon Upconverting Crystals of Dinuclear Cu(I)-Iodide Complexes by Ligand Engineering
- Who: Joy Chatterjee, Abhijit Chatterjee, Riteeka Tanwar, Prakash Panwaria, Sajid Saikia, Madan D Ambhore, Pankaj Mandal, Partha Hazra
- What: Activation of TADF (Thermally Activated Delayed Fluorescence) in Photon Upconverting Crystals of Dinuclear Cu(I)-Iodide Complexes by Ligand Engineering
- When: Published online ahead of print on May 31, 2024
- Where: Journal of Physical Chemistry Letters
- Why: To investigate how ligand engineering can modulate the triplet harvesting mechanism in iodide-bridged rhombic Cu2I2 complexes and their potential applications in OLED device fabrication and nonlinear photon upconversion processes.
- How: By studying the emission properties of two complexes, complex-1 and complex-2, with different Cu-Cu distances. Complex-1 exhibits phosphorescence, while complex-2 exhibits TADF (Thermally Activated Delayed Fluorescence) due to an increased Cu-Cu distance. The TADF property of complex-2 is utilized for the fabrication of a pc-LED emitting efficient warm white light. Additionally, both complexes show efficient third-harmonic generation (THG).
- triplet harvesting mechanism in iodide-bridged rhombic Cu2I2 complexes
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