表面活性剂溶胀胶束：性能及应用

溶胀胶束是表面活性剂胶束增溶其它物质后使胶束膨胀的一种胶束状态,因其能显著提高难溶性物质的溶解度而备受关注。针对近年来对溶胀胶束的研究进展,综述了溶胀胶束的最大增溶量、增溶过程以及增溶后形貌尺寸的变化等问题,总结了影响胶束增溶作用的因素,厘清了溶胀胶束与微乳液的异同,介绍了溶胀胶束的应用,展望了其应用前景与发展方向。     

Synthesis,Crystal Structure and Properties of a New Coordination Polymer Constructed with 3-（4-hydroxypyridinium-1-yl）phthalic Acid

A new nickel coordination polymer {[Ni(dpa)(bpe)(H2O)]2}n(1) has been hydro-thermally synthesized, and structurally characterized by UV spectroscopy, elemental analyses and single-crystal X-ray diffraction(H2dpa=3-(4-hydroxypyridinium-1-yl) phthalic acid, bpe=μ-1,2-di(4-pyridyl) ethylene). It crystallizes in the triclinic system, space group P1 with a=8.779(2), b=10.909(3), c=12.739(3), α=72.45(2), β=75.13(2), γ=86.47(2)°, V=1124.1(5) 3, Z=2, Mr=516.14, Dc=1.525 g/cm3, μ=0.912 mm-1, Rint=0.0532, F(000)=532, the final R=0.0523 and wR=0.1089 for 3949 observed reflections(I2σ(I)). The coordination around the Ni center is a distorted octahedron coordination geometry involving two protonated H2dpa ligands, two bpe ligands, and one coordinated H2O molecule. The dpa2- anion, as a bridging ligand, connects two Ni centers to form binuclear units, which are linked together by the bpe ligands to form two-dimensional layers, and the interlayer hydrogen bonding further extends the 2D sheet into a 3D supramolecular framework.