Three novel rhodamine-based Hg^2＋ fluorescent sensors were designed and synthesized. The sensors could work in semi-aqueous solutions with nearly neutral p H and showed high selectivity and sensitivity to Hg^2＋ with remarkable fluorescence enhancement. For these three sensors, the linear working range broadened（0–80, 0–100 and 0–140 μmol/L, respectively） and the sensitivity increased（7.7, 15.5 and 17.6 folds of the fluorescence enhancement and 512, 66.2 and 37.6 ppb of the detection limit） with the rising of the thiourea-unit numbers. Furthermore the sensors exhibited excellent interference immunity to multiple environmentally and biologically relevant metal ions. Pond and tap water assay showed good practicability of the sensors. The number of the bound Hg^（2＋） equaling to that of the thiourea units and the irreversible recognition process implied a new interaction way between Hg^（2＋） and the sensor.
Three novel eco-friendly anti-creasing agents have been designed and synthesized. The natural silk fabrics treated with them exhibit higher wrinkle recovery degree, strength retention rate and whiteness than those finished with 1,2,3,4-butane tetracarboxylic acid （BTCA）. The washing durability of the fabrics treated with the synthesized compounds and BTCA is similar. The chlorine atom, the carboxyl and the s-triazine ring in the synthesized structures and the surface roughness of the silk fabric are all contributive to the imorovement of the crease resistance of silk.
Xiao Shan LiuTie Ling XingDong Mei XuGuo Qiang Chen
Novel dendritic compounds G1.5（OH）4 and G1.5（OH）8 with peripheral hydroxyl were synthesized under mild conditions from eyanuric chloride, ethylene diamine, ethanolamine and diethanolamine. The products could be separated and purified through dispersion and precipitation in organic solvents with good yields （over 93.0%） and high purity （above 98.0%, HPLC）. The structures of the products were characterized by 1R, MS, 1H NMR and elementary analysis. G1.5（OH）4 and Gl.5（OH）8 could be dissolved in polar solvents such as methanol, water and dimethylsulfoxide. TGA analysis showed that G1.5（OH）4 and G1.5（OH）8 had good thermo stability. The aqueous solutions ofG1.5（OH）4 and G1.5（OH）8 exhibited low surface tension.
