High‐Temperature Solid‐State Post‐Synthetic Modification of Highly Luminescent Cu(I) Metallacycles toward New Luminescent Thermic Tracers. - Schlachter, Adrien; Xu, Chendong; Schiller, Jana; Melero, Raquel Utrera; Kerneis, Sébastien; Calvez, Guillaume; Costuas, Karine; Scheer, Manfred; Lescop, Christophe (Angewandte Chemie International Edition, 2025)