Abstract

By changing the synthesis method and through the pourbaix diagram, a novel 0D organic−inorganic hybrid like perovskite system was crystallized by slow evaporation in an aqueous solution of 2-(aminomethyl) pyridine (2-amp) and tin chloride. Compound with the formula (C6H10N2)[SnCl3]Cl was characterized by single-crystal X-ray diffraction, Infrared spectroscopy (IR), and UV-Visible (UV-Vis) as well as photoluminescence (PL) technique and thermal analysis. The crystals of (C6H10N2)[SnCl3]Cl belong to the orthorhombic system with the Pbca space group. The crystalline stability is ensured by a three-dimensional network of N-H…Cl hydrogen bonds. Theoretical calculations were performed using density functional theory with the B3LYP/LanL2DZ level for studying the molecular structure and vibrational spectra of the title compound. A satisfactory agreement has been found between the calculated and the experimental vibrational frequencies. UV-Vis reveals that (C6H10N2)[SnCl3]Cl undergoes two absorption bands with an energy gap estimated to 3.27 eV. The material exhibits an important broad-band white light emission with a correlated color temperature of 4989 K with chromaticity coordinates (CIE) of (0.34, 0.33) and CRI of 92. According to others s2 Tin-complexes, this emission is mainly resulting from the self-trapped exciton transitions within the inorganic framework. Our contribution of luminescent 0D organic-inorganic hybrid materials as lead-free lighting systems opens up a new paradigm in functional materials design.

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