dimethyl formamide(dmf) meaning in English

二甲基甲醯胺

Meso - tetra ( 4 - acyloxyphenyl ) pophyrin was prepared by usual procedure from acyl chloride and meso - tetra ( 4 - hydroxyphenyl ) porphyrin in benzene and obtained in 86 . 4 % yield . treatment of the free base with zinc chloride in dimethyl formamide ( dmf ) - dichloromethane ( ch2cl2 ) yielded corresponding zinc porphyrin complex . the spectral data ( uv - visjr / h - nmr ) and elemental analysis are in agreement with the assigned structures
在合成工作基础上，采用紫外可见光谱( uv - vis ) 、红外光声光谱( ftir - pas ) 、核磁共振氢谱( ~ 1hnmr ) 、元素分析、摩尔电导等手段研究了卟啉及金属卟啉材料的组成及结构。
The ratio of tetraethyloxysilane ( teos ) : ethanol : distilled water is 1 : 3 : 4 . n - n " dimethyl formamide ( dmf ) was used as solvent and drying control chemical additive ( dcca ) in a proportion of 0 . 3 dmf / ethanol volume ratio . drops of hf / hc1 mixture acid was added to promote hydrolysis ( ph = 2 )
溶剂的选择对基质凝胶孔的形状基本没有影响，但对其孔径分布有较大影响:在hf / hci混合酸催化情况下， dmf溶剂的样品孔径最小， dmf /乙醇混合溶剂的其次，乙醇溶剂的样品孔径最大。