Novel tri-armed star polystyrene-block-poly(N-isopropylacrylamide) block copolymers with trimesic acid as central molecules were synthesized by successive two-step atom transfer radical polymerization, and confirmed by Fouriertransform infrared spectra, 1 H nuclear magnetic resonance, and laser light scattering gel chromatography system. The copolymers could self-assemble into spherical core-shell micelles in aqueous media independent on drug loading. Physicochemical properties of the blank and drug-loaded micelles were examined by surface tension, fluorescence spectroscopy, UV-vis, transmission electron microscope, and dynamic light scattering measurements. The copolymer micelles exhibited thermo-triggered phase transition, with low critical solution temperature of 33.7 and 34.6 C, varying with copolymer compositions. The critical aggregate concentrations were 11.62 and 47.61 mg L 21 , and hydrodynamic diameters from 200 to 220 nm. Water-insoluble 10-hydroxycamptothecine was encapsulated into the micelle aggregates to investigate the change in the resulting physicochemical parameters, thermo-triggered in vitro drug release, and the applicability as drug targeting release carriers. MTT assays were carried out to uncover cytotoxicity of the newly developed micelle-based drug formulations. V C 2014 American Institute of Chemical Engineers AIChE J, 61: [35][36][37][38][39][40][41][42][43][44][45] 2015

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This paper presents a comprehensive study about the adsorption ability of five different sites in metal-organic framework (MOF-5), including pure and different groups (-NO2,-NH2,-CH3,-OZn) decorated ones, for CO2 and other greenhouse gases and industrial waste gases. The selective adsorption ability was investigated based on the tight binding approximation method. The results show that sites I and II are the major adsorption sites for pure MOF-5. The highest adsorption energy can be-0.25 eV. Group decoration enhances the adsorption ability of MOF-5 when adsorbing CO2, which is highly related to the activity of decorated groups and the local configurations. Among these groups,-NO2 enhances the adsorption ability of all sites for CO2 absorption. The-NO2 decorated MOF-5 shows an obvious selective adsorption ability for different gases in the air environment (O2, N2, H2O, CO2) and for industrial waste gases environment (CO2, CO, NO, NO2, SO2, SO3).