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A transformation process of ozone on different iron oxides suspensions, including α-Fe2O3, α-FeOOH, Fe3O4, was carried out using FTIR of adsorbed pyridine, ATR-FTIR and electron paramagnetic resonance (EPR) spectra with isotope 18O3. It was verified that on the surface isolated hydroxyl groups and the surface hydroxyl groups without acid sites of these iron oxides, ozone was electrostatically adsorbed and did not interact with the surface of these oxides, stably existed as ozone molecule. In contrast, ozone could replace the surface hydroxyl groups on Lewis acid sites of oxides, and directly interacted with the surface metal ions, decomposing into reactive oxygen species (ROS) and initiating the surface metal redox. The results indicate that Lewis acid sites were active center while the electronic cycle of the Fe2+/Fe3+ is advantageous to promote ozone decomposition into O2•− and •OH radicals. The mechanism of catalytic ozonation in different surface acid sites of iron oxides aqueous suspension was proposed on the basis of all experimental information.

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A series of schiff base derivatives with salicylaldehyde moieties were designed and synthesized. This materials exhibit typical AIE properties and high fluorescence quantum yields in an aggregated state based on excited-state intramolecular proton transfer (ESIPT) mechanism. Then, the effect of substituted group types and positions on the fluorescence of these novel compounds was investigated through fluorescence spectra analysis and theoretical calculations. And it was found that the salicyaldehyde derives can be used as potential pH and Zn 2+ sensing.A series salicyaldehyde derives with AIE properties were designed and synthesized, which can be used as potential pH and Zn 2+ sensing.

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Luminescent materials with aggregation-induced emission (AIE) property have attracted considerable interests for their promising applications in light-emitting and display devices and fluorescent chemsensors. Coumarin and its derivatives are one of the most attractive chromophores for their excellent properties, such as high fluorescence quantum yield, large Stokes shift, less toxicity, ease of modification and visible wavelength emission. A coumarin-based AIE-active red fluorogen was designed and synthesised. It was found that CDPA exhibit AIE property, red emission, self-assembly and thermally activated delayed florescence (TADF) in solid state.

A water-soluble fluorescent probe for Zn2+based on a Schiff base derivative was prepared. It displays a rapid response toward Zn2+with selectivity and sensitivity and has been successfully applied to imaging in living cells.

A coumarin-based "Turn-on" fluorescence chemosensor 1 containing L-histidine for Al 3+ was readily synthesized and investigated, which showed high selectivity and remarkable sensitivity for aluminium(III) ions based on photo-induced electron-transfer (PET) mechanism in aqueous solution (Tris-HCl, 0.1 mM, pH 7.2). The sensor responded rapidly to Al 3+ in aqueous solutions with a 1:1 stoichiometry. Meanwhile, it indicated excellent adaptability and also the responsiveness.