Mechanism of diastereoisomer-induced chirality of BiOBr

Abstract

Chiral molecularly driven asymmetric structurMe is known to be elusive because of the intriguing chirality transfer from chiral molecules to achiral species. Here, we found that the chiral assembly of...

Chiral Inorganic Nanomaterials for Photo(electro)catalytic Conversion

“…In some cases, atomic distortions or defects could also serve as the origin of chirality in chiral NMs. − For example, dislocation of the (001) facet within ZnO nanowires can cause screw crystal distortions; controlling the density of chiral defects caused by the distortion of Br–Bi tetragonal cones can effectively regulate the helical BiOBr nanoflakes . The induction of chiral distortions or defects provides an additional approach to achieving atomic chirality in inorganic NMs.…”

“…Additionally, asymmetry in the crystal structure, such as defects, can also cause variations in the electronic configuration, which can modify the spin states of electrons. − Compared with the symmetric crystal structures, chiral crystal structures, such as chiral Sohncke space groups, exhibit asymmetric atomic stacking modes, leading to wide-ranging aberrant lattice regions. These regions can significantly impact the electronic configuration of the materials and have implications for the spin states of electrons, similar to that in Figure . ,, This is also applied for defects and lattice distortion, which break the symmetry of a nanocrystal. Therefore, it can be deduced that chiral asymmetric characteristics may alter the electronic configuration of inorganic NMs.…”

“…70−72 For example, dislocation of the (001) facet within ZnO nanowires can cause screw crystal distortions; 70 controlling the density of chiral defects caused by the distortion of Br−Bi tetragonal cones can effectively regulate the helical BiOBr nanoflakes. 73 The induction of chiral distortions or defects provides an additional approach to achieving atomic chirality in inorganic NMs. Yet, as the generation of atomic distortions and defects usually occurs randomly, achieving controllable handedness through this strategy poses a significant challenge.…”

“…These regions can significantly impact the electronic configuration of the materials and have implications for the spin states of electrons, similar to that in Figure 7. 67,70,73 This is also applied for defects and lattice distortion, which break the symmetry of a nanocrystal. Therefore, it can be deduced that chiral asymmetric characteristics may alter the electronic configuration of inorganic NMs.…”

Recent developments in bismuth oxyhalide-based functional nanomaterials for biomedical applications

“…The change in morphology and the formation of crystal faces depend largely on the characteristic reaction conditions, including reaction time, system temperature, pH value, inducers, etc. 44,[46][47][48][49] As an example, Zeng et al synthesized two kinds of well-crystallized BiOCl singlet-crystalline sheets by controlling the pH value. Under diverse pH conditions, the two nanosheets catalyze the production of reactive oxygen species (ROS) under light irradiation in different ways: one is due to the exciton effect, and the other is due to charge transfer.…”