A novel tetraphenylethylene material with liquid crystalline (LC) helical structure and aggregationinduced emission (AIE) property was prepared by ionic selfassembly (ISA). The AIE activity, phase behavior, selfassembly structure, and molecular packing behavior of the complex were then elucidated via a combination of different experimental techniques such as UV−vis absorption spectra, photoluminescence spectra, differential scanning calorimetry, polarized optical microscopy, one-and two-dimensional X-ray diffraction, and Fourier transform infrared spectroscopy. The experimental results reveal that the ISA complex possesses high-efficiency luminescent property with quantum yield as high as 46% in solid state. Meanwhile, the complex could self-assemble into different interesting structures which are sensitive to peripheral chain motions. During heating, the complex takes a low-ordered helical supramolecular structure at ambient temperature and then forms another LC phase with high-ordered helical molecular stacking. These ordered hierarchical structures, in combination with the liquid crystallinity and excellent AIE property of the ISA complex, make it a promising material for fabrication of luminescent devices.

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To separate a salt mixture (mainly consisting of Na2CO3 and Na2SO4) which is formed from the 4,4′-diaminostilbene-2,2′-disulfonic acid wastewater treatment, the solubility data of Na2CO3 and NaHCO3 in Na2SO4–water solvent mixtures were measured using a dynamic method over the 275–335 K temperature range. The solute-free mass fraction of Na2SO4 in the solvent mixtures extended from 0 to 0.25. The solubility of Na2CO3 and NaHCO3 in Na2SO4–water solvent mixtures decreased with addition of Na2SO4. With rising temperature, the solubility of NaHCO3 increased while the solubility of Na2CO3 increased at first and then decreased after transition points. The experimental data were correlated with the electrolyte nonrandom two-liquid model. The root-mean-square deviations of solubility temperature varied from 0.35 to 1.50 K. Based on the solubility data of this work, a new strategy for separating the Na2CO3 and Na2SO4 mixture was proposed theoretically.

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Orange peel, an agricultural waste available in large quantity in China, was utilized as low-cost adsorbent to remove furadan from aqueous solution by adsorption. Adsorption isotherms were calculated and discussed. Both Langmuir and Freundlich models fitted the adsorption data quite reasonably (R2> 0.98) and the maximum adsorption capacity was 161.29 mg.g-1. The results in this study indicated that orange peel was an attractive candidate for removing furadan from the aqueous solution.