 Hybrid perovskites are composed of organic and inorganic components which can be used as light emitting materials or photovoltaics. These materials have been shown to exhibit chirality, meaning they have a preferred direction of rotation. This chirality is thought to arise from symmetry breaking within the inorganic framework, but the exact mechanism has not yet been identified. By studying the structural isomus of hybrid perovskites, researchers were able to identify the effect of hydrogen bonding between the two building blocks on the degree of chirality transfer. They found that asymmetric hydrogen bonding interactions between the two building blocks resulted in greater chirality transfer than symmetric ones. Additionally, the researchers confirmed this finding experimentally by analysing the crystallography parameters of the materials. Finally, they concluded that the different asymmetric hydrogen bonding interactions derived from different functional group locations played a key role in the chirality transfer phenomenon and the resulting spin-related properties of chiral perovskites. This article was authored by Jaehyun Sun, Seonil Ma, Young Kwon Jung, and others. We are article.tv, links in the description below.