Organic metal halide hybrids with low-dimensional structures at the molecular level have received great attention recently for their exceptional structural tunability and unique photophysical properties. Here we report for the first time the synthesis and characterization of a one-dimensional (1D) organic metal halide hybrid material, which contains metal halide nanoribbons with a width of three octahedral units. It is found that this material with a chemical formula C8H28N5Pb3Cl11 shows a dual emission with a photoluminescence quantum efficiency (PLQE) of around 25% under ultraviolet (UV) light irradiation. Photophysical studies and density functional theory (DFT) calculations suggest the coexisting of delocalized free excitons and localized self-trapped excitons in metal halide nanoribbons leading to the dual emission. This work shows once again the exceptional tunability of organic metal halide hybrids that bridge between molecular systems with localized states and crystalline ones with electronic bands.
@article{arxiv.2211.07597,
title = {Bulk Assembly of Organic Metal Halide Nanoribbons},
author = {Sujin Lee and Rijan Karkee and Azza Ben-Akacha and Derek Luong and J. S. Raaj Vellore Winfred and Xinsong Lin and David A. Strubbe and Biwu Ma},
journal= {arXiv preprint arXiv:2211.07597},
year = {2023}
}