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Recently, low-dimensional organic–inorganic hybrid metal halides have attracted considerable attention in solid-state optical application fields, especially in white-light emitting diodes (WLEDs) owing to intrinsic broadband luminescence performances. Herein, by selecting different types of organic cations as a structural decoration strategy, we designed a series of new 1D hybrid halides of A2Pb3Br10 (A = NPM, DMPDA, TMEN) based on same [Pb3Br10]4− chains composed of edge-shared [Pb3Br12]6− trimers. The low-dimensional crystal lattice results in the formation of self-trapped excitons, which leads to broadband light emissions covering the entire visible region for all A2Pb3Br10 homologues. Specifically, compound 1 exhibits yellowish-white light emission (0.34, 0.45) with a photoluminescence quantum efficiency of 2.51%. Both compounds 2 and 3 show bluish-white light emissions centered at 438 nm and 440 nm, respectively, with high color rendering index (CRI) of 96, which belongs to one of the highest values to date. The intrinsic broadband white light emissions enable them as promising candidates for single-component white-light emitting materials. [ABSTRACT FROM AUTHOR]

Three new organic–inorganic hybrid manganese thiogermanates and thiostannates, namely, [Mn(en)2]MnGeS4 (1, en = ethylenediamine), [Mn(dien)2]MnSnS4 (2, dien = diethylenetriamine) and [Mn(1,2-dap)]2Sn2S6 (3, 1,2-dap = 1,2-diaminopropane), have been solvothermally synthesized and structurally characterized. Compound 1 has a three-dimensional (3D) neutral framework composed of one-dimensional (1D) [MnGeS4]2− chains and unsaturated [Mn(en)2]2+ cations interconnected via Mn–S bonds, whereas compounds 2–3 feature 1D [MnSnS4]2− anionic chains and 1D neutral [Mn(1,2-dap)]2Sn2S6 chains, respectively. Investigation into the magnetic properties of the title compounds reveals antiferromagnetic and ferromagnetic coupling interactions between the Mn(ii) ions for compounds 1 and 3, respectively. The optical and luminescence properties, as well as the thermal stabilities, were also studied. [ABSTRACT FROM AUTHOR]