Figure 2. Schematic illustration of the possible fluorescence
mechanism for P1, P2, and P3 (A) and molecular interactions in P1 (B).
(C) Molecular structure of P1. Reproduced with permission: Copyright
2019, American Chemical Society.[43] (D) Schematic
illustration of the CTE mechanism in disulfide containing HBPSi.
Reproduced with permission: Copyright 2022, John Wiley and
Sons.[40] Molecular structure (E) and fluorescence
microscope images (F) of HBPSi contains C=C-C=O segment. Reproduced with
permission: Copyright 2020, The Royal Society of
Chemistry.[41]