Multiring-induced multicolour emission: hyperbranched polysiloxane with silicon bridge for data encryption

Abstract

The presented work shows an impressive multicolour luminescence hyperbranched polysiloxane attributed to the multiring through-space conjugation named “multiring induced multicolor emission” (MIE), as well as its application in data encryption.

Supramolecular Hyperbranched Poly(amino ester)s with Homogeneous Electron Delocalization for Multi‐Stimuli‐Responsive Fluorescence

“…Furthermore, recently, our group found that a novel hyperbranched polysiloxane exhibited similar phenomenon, that is, different‐sized electron delocalization emitted different color light. [ 28 ] However, in Figure 4C, the electron delocalization of P0 is homogeneous; thus, the band gaps of HOMO‐LUMO orbits of most electron delocalization are similar, which is the reason only blue light is generated. It is obvious that P0, P1, and P2 have different molecular structures.…”

Fluorescent linear polyurea based on toluene diisocyanate: Easy preparation, broad emission and potential applications

“…This insensitivity of emission versus the tested solvents suggests the negligible solvent effect on the cluster structure, i.e. weak interaction between solvent and TPU chains, which is different from hyperbranched polysiloxane, where obvious changes of the emission intensity was observed in different solvents [65].…”

“…The quenching effect of Fe 3+ has been often studied for different fluorescent materials [65][66][67][68][69]. Different mechanisms have been proposed for the selectivity of Fe 3+ .…”

“…Different mechanisms have been proposed for the selectivity of Fe 3+ . Its larger charge/radius ratio is believed to be one possibility [65,69], which renders it with the strongest electron-withdrawing ability among all the ions tested. Another widely accepted mechanism is its paramagnetic nature, with its five d orbits half-filled under electronic structure of 3d5-4 s0.…”

A novel aggregation-induced emission poly(phosphoramidate): fluorescence properties and visual detection for Cu2+

“…Compared with conventional aggregation-induced emission (AIE) luminogens, 1,2 non-aromatic AIE polymers 3,4 is emerging in biological imaging, metal ion detection and other fileds 1,4,5 due to their low toxicity and excellent environmental friendliness. However, the species of non-aromatic AIE polymers are mainly limited to the N-containing polymers such as poly(amino ester)s, [6][7][8] poly(amidoamine)s, 9 polyethylenimines, 10 etc.…”