Bioinorganic chemistry : development of the concept of symmetry switch ” by studying nonplanar metalloporphyrins as models to elucidate the biological consequences of macrocycle deformation on hemoproteins 生物無(wú)機(jī)化學(xué):以非平面金屬的模型研究,探討血紅素蛋白中大環(huán)變形對(duì)其生物功能之影響,并從而建立?對(duì)稱開(kāi)關(guān)?的概念。
In this paper , stable perylene and phthalocyanine monolayers were obtained through modifying silicon wafers by chemical reaction between organic macrocycle molecules and functional silicon surface . the surface morphology , aggregation and optical - electric properties of these monolayers were characterized by xps , ftir , uv - vis spectrum , afm , raman , xrd and surface photovoltaic spectrum 通過(guò)紅外光譜,紫外?可見(jiàn)光( uv ? vis )吸收, x光電子能譜,激光拉曼光譜,原子力顯微鏡( afm ) ,表面光電壓譜等表征手段研究了單層膜的表面形貌、聚集態(tài)結(jié)構(gòu)和光電性能等等。
Ftir and xps proved that ptcda and tcpc were attached on the surface of silicon by covalent ; afm and uv - vis showed ptcda and tcpc arranged orderly on surface of silicon ; through raman spectrum , we found that macrocycle molecules stand on surface of silicon , while macrocycle molecules in film by vacuum deposition parallel to silicon surface 紅外光譜和光電子能譜證明了?和酞菁成功的化學(xué)鍵合到單晶硅表面, afm和uv - vis吸收光譜表明了?和酞菁單層膜在硅基上呈有序排列。拉曼光譜的研究發(fā)現(xiàn)?酐分子大環(huán)以一定的角度立于硅基表面,而不是平行于基體表面,與蒸鍍手段得到的?酐膜的堆積形態(tài)完全不同。
百科解釋
A macrocycle is, as defined by TUPAC, "a cyclic macromolecule or a macromolecular cyclic portion of a molecule." In the chemical literature, organic chemists may consider any molecule containing a ring of nine or more atoms to be a macrocycle.