element of second generation meaning in Chinese

再次衍生元线

A variety of artificial receptor molecules , such as cyclodextrin ( cd ) , crown ethers , calixarenes and porphyrin , as typical host compounds , have attracted enormous research interest in their molecular recognition . among them , cds having an interior hydrophobic cavity and an exterior hydrophilic environment , as a buildup element of second generation supramolecule , can accommodate many organic , inorganic and biological molecules in their toroidal cavity to form stable host - guest inclusion complexes . therefore , they have been paid much attention by the researchers of supramolecular chemistry
在已报道的多种人工超分子主体物质中,以冠醚、环糊精( cyclodextrin ,简称为cd ) 、杯芳烃及卟啉( porphyrin )为主体的分子识别研究引起了人们的广泛关注,其中环糊精( cd )作为第二代超分子的构筑体,其内腔疏水而外部亲水,可以与许多有机、无机和生物分子形成包合物,从而成为超分子化学工作者感兴趣的研究对象。