Both optically active 1-tetrazole-4-imidazole-benzene (TIB) with bifunctional azole groups and heterometals were utilized to build a new type of one-dimensional (1-D) hybrid cuprous-lead bromide [PbCu 2 Br 4 (TIB) 2 ] n (1), which exhibits infrequent deep-red luminescent emission at 704 nm with a large Stokes shift of 321 nm. Owing to the existence of rare free Lewis basic imidazole groups, 1 can be used as the sole dual-responsive luminescent sensor for the efficient and selective detection of Fe 3+ and Cr 2 O 7 2− in an aqueous solution.
Integration of the photoactive Pb2+ ion into the cuprous iodide framework gives a new type of luminescent heterometallic iodide as a promising dual luminescent material.
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