Organic metal halide hybrids with low dimensional structures at the molecular level have received great attention recently due to their exceptional structural tunability and unique photophysical properties. From quasi-2D to layered-2D, corrugated-2D, 1D wires/tubes, and 0D metal halide molecular species/clusters, a variety of structures have been developed and studied during last few years. The photophysical properties of these materials show strong structure-dependence with emissions from either free exciton or self-trapped excited states. The rich chemistry of this class of organic-inorganic hybrid materials offers tremendous opportunities to further explore new combinations of organic and metal halide species with novel structures and properties. Here we report for the first time the synthesis and characterization of an organic metal halide hybrid containing one-dimensional (1D) metal halide nanoribbons with a width of three octahedral units. It is found that this material with a chemical formula C8H28N5Pb3Cl11 shows dual emission from both delocalized free exciton and localized self-trapped excited states under UV light irradiation with a photoluminescence quantum efficiency (PLQE) of around 25 %. This work shows once again the exceptional tunability of organic metal halide hybrids, which could lead to the development of functional hybrid materials for many applications.

Bulk assembly of metal halide ribbons

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ACS Fall 2022

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