fig9

Figure 9. (A) Molecular structure of 16-2-16 L-tartrate (left) and TEM images of L-SiO₂:Tb³⁺ calcined at 900 °C (middle) and nanohelices@PNCs in a dried film and the cross sections (yellow and red frames) obtained with 3D tomography reconstructions (right). Reproduced with permission from Ref.^[70]. Copyright (2021) Royal Society of Chemistry. Reproduced with permission from Ref.^[73]. Copyright (2020) American Chemical Society. (B) SEM image of TPES-P. Reproduced with permission from Ref. ^[74]. Copyright (2019) Royal Society of Chemistry. (C) SEM image of L-CASN. Reproduced with permission from Ref.^[75]. Copyright (2019) Royal Society of Chemistry. TPES-P: TPE-silica with plus helice. L-CASN: left-handed chiral lamellar mesostructured AIEgen-silica hybrid hollow nanotubes;