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Poly(methacrylic acid)-functionalized SBA-15 silicas (denoted as P-x-PMA/SBA-15 where x is molar ratio of TSPM/(TEOS+TSPM) in percentage in the initial mixture) were synthesized by co-condensation of tetraethoxysilane and varying contents of 3-(trimethoxysilyl)propyl methacrylate in acidic medium with the block copolymer Pluronic 123 as a structure directing agent and then polymerization by methacrylic acid in the presence of ammonium persulfate as an initiator. The functionalized materials were characterized by PXRD, TEM, SEM, IR, and adsorption-desorption at 77 K. The investigation of phenol adsorption in aqueous solution on the materials showed that the poly(methacrylic acid)-functionalized mesoporous silicas possess strong adsorption ability for phenol with interaction of various kinds of hydrogen bonds. The adsorption data were fitted to Langmuir isotherms and the maximum adsorption capacity of the three functionalized materials P-5-PMA/SBA-15, P-10-PMA/SBA-15, and P-15-PMA/SBA-15 to be 129.37 mg/g, 187.97 mg/g, and 78.43 mg/g, respectively, were obtained. The effect of the pH on phenol adsorption was studied.

Natural Medicine Center, Korea Institute of Science and Technology, Gangneung 210-340, KoreaReceived April 22, 2013, Accepted April 30, 2013Key Words : Cyperus rotundus, Cyperaceae, Sesquiterpene, Nitric oxide, InflammationThe rhizomes of Cyperus rotundus L. (Cyperaceae) havebeen used in traditional Chinese medicine as an estrogenicand anti-inflammatory agent for the treatment of women'sdiseases and also used for treatment of stomach ache, boweldisorders, and menstrual disorders.

Anion effects on structures of complexes containing 2,2'-bipyridine (2,2'-bpy) ligands have been studied, and compared with -(2,2'-bpy) complexes. For each anion, different structures have been obtained in both -(2,2'-bpy) and -(2,2'-bpy). Polymeric structures of -2,2'-bpy complexes can be produced by hydrogen bonding interactions as shown in -2,2'-bpy complexes. In addition, the bigger size of a ion gives higher coordination numbers forming variety of structures, and it makes that chlorides can act as bridging ligands to form a one-dimensional structure. The compound catalyzed efficiently the transesterification of a variety of esters with methanol, while the rest of the compounds have displayed very slow conversions. In addition, the emission bands of complexes , , , and are blue-shifted compared to the corresponding ligand 2,2'-bpy, whereas and showed the similar emission observed for the ligand.