Metal-organic frameworks（MOFs） are important functional materials. MOF-5（IL）（Zn4O（BDC）3（BDC=1,4-benzenedicarboxylate） was in situ synthesized by the electrochemical method using a tunable ionic liquid（IL）, ...Metal-organic frameworks（MOFs） are important functional materials. MOF-5（IL）（Zn4O（BDC）3（BDC=1,4-benzenedicarboxylate） was in situ synthesized by the electrochemical method using a tunable ionic liquid（IL）, 1-butyl-3-methylimidazolium chloride, as template. The crystallization of distinctly spherical MOF-5（IL） synthsized in ionic liquid by the electrochemical method is attributed to π-π stacking effect, ionic bond, and coordination bond. The analysis results show that the product MOF-5（IL） exhibits better crystallinity and higher thermal stability than MOF-5 generated using the solvothermal method. The cyclic voltammetry reveals that the electrosynthesis reaction is irreversible and controlled by the diffusion. The experiments on methylorange degradation show that the unique structure characteristics of MOF-5（IL） can enhance the photocatalytic ability of Bi OBr. Therefore, MOFs can replace noble metals to improve the photocatalytic properties of bismuth oxyhalide.展开更多
The product of the obesity gene, called leptin, is an important regulator of adiposity, which mainly functions via its regulation of feed intake and energy metabolism. Both obesity gene (ob gene) and leptin receptor g...The product of the obesity gene, called leptin, is an important regulator of adiposity, which mainly functions via its regulation of feed intake and energy metabolism. Both obesity gene (ob gene) and leptin receptor gene (OBR gene) are thought to play a major role in controlling of body fat mass as well as body weight. The result of RT-PCR shows that levels of pig OBR mRNA are higher in hypothalamus, lung and liver, and lower expression can be detected in other tissues. Total RNA purified from 11 different organs and tissues have been hybridized with pig OBR cDNA probes. The hybridization signals are shown in 7 organs and tissues. 4.1 and 3.8 kb bands were observed from hypothalamus, whereas 3.8 and 3.5 kb bands were observed in other tissues instead. The nearly complete sequence of the extracellular domain of pig OBR gene was obtained. The homology of sequence is 89.2% between pig and human, 80.3% between pig and mouse. Alignment of the predicted ammo acid sequence of OBR in pig, human and mouse shows展开更多
基金Project(U1261103)jointly supported by the National Natural Science Foundation of China and Shenhua Group Corp
文摘Metal-organic frameworks（MOFs） are important functional materials. MOF-5（IL）（Zn4O（BDC）3（BDC=1,4-benzenedicarboxylate） was in situ synthesized by the electrochemical method using a tunable ionic liquid（IL）, 1-butyl-3-methylimidazolium chloride, as template. The crystallization of distinctly spherical MOF-5（IL） synthsized in ionic liquid by the electrochemical method is attributed to π-π stacking effect, ionic bond, and coordination bond. The analysis results show that the product MOF-5（IL） exhibits better crystallinity and higher thermal stability than MOF-5 generated using the solvothermal method. The cyclic voltammetry reveals that the electrosynthesis reaction is irreversible and controlled by the diffusion. The experiments on methylorange degradation show that the unique structure characteristics of MOF-5（IL） can enhance the photocatalytic ability of Bi OBr. Therefore, MOFs can replace noble metals to improve the photocatalytic properties of bismuth oxyhalide.
基金the National Natural Science Foundation of China (Grant No. 39725022 ) the State Key Basic Research Development Program (Grant No. 2000016100).
文摘The product of the obesity gene, called leptin, is an important regulator of adiposity, which mainly functions via its regulation of feed intake and energy metabolism. Both obesity gene (ob gene) and leptin receptor gene (OBR gene) are thought to play a major role in controlling of body fat mass as well as body weight. The result of RT-PCR shows that levels of pig OBR mRNA are higher in hypothalamus, lung and liver, and lower expression can be detected in other tissues. Total RNA purified from 11 different organs and tissues have been hybridized with pig OBR cDNA probes. The hybridization signals are shown in 7 organs and tissues. 4.1 and 3.8 kb bands were observed from hypothalamus, whereas 3.8 and 3.5 kb bands were observed in other tissues instead. The nearly complete sequence of the extracellular domain of pig OBR gene was obtained. The homology of sequence is 89.2% between pig and human, 80.3% between pig and mouse. Alignment of the predicted ammo acid sequence of OBR in pig, human and mouse shows
