两种阴离子识别受体的合成及识别研究  

Synthesis and anion recognition research for new receptors

作　　者：李新娟[1] 张倩[1] 贾献彬[1] 尚学芳[2] 张金莲[2] 徐秀芳[3] 

机构地区：[1]河南师范大学化学与环境科学学院,河南新乡453007 [2]新乡医学院基础部,河南新乡453003 [3]南开大学化学系,天津300071

出　　处：《化学研究与应用》2012年第10期1472-1477,共6页Chemical Research and Application

基　　金：河南省科技厅发展计划项目(082300450530)资助;河南省教育厅自然科学研究项目(2010B150024)资助

摘　　要：两种同时包含酚羟基和二酰胺基团的的阴离子识别受体被设计和合成,通过紫外-可见光谱研究了受体分子和不同阴离子客体间的识别作用。研究结果发现,受体分子1在干燥的DMSO溶液中能选择性识别AcO-,其识别顺序为:AcO->F->H2PO4->Cl-,Br-,I-;受体分子2显示出对F-较强的识别作用,其识别顺序为:F->AcO->H2PO4-,Cl-,Br-,I-。同时通过紫外-可见光谱和核磁滴定实验,研究了只包含二酰胺基团的受体分子3对阴离子的识别作用,发现起识别作用的是二酰胺基团,但这种作用力非常小,不能有效地进行阴离子识别。进一步通过核磁共振滴定实验和理论研究,证实受体分子1和2在有效的阴离子识别过程中,酚羟基比酰胺基团起着更为重要的作用。Two novel receptors bearing phenol group and diamide were synthesized and characterized. The UV,vis titration experi- ments revealed that receptor 1 had a better selectivity to AeO-in DMSO, the association constants followed the trend： AcO-〉F-〉 H2PO4- 〉CI-, Br-, I-. Receptor 2 had a better selectivity to F-, the order of selectivity： F-〉AcO-〉H：PO4-, CI-, Br-, I-. The recog- nition behavior of receptor 3 ordy containing diamide was investigated by UV-vis and 1 H NMR titration experiments. The results re- vealed that 3 complexed F- through hydrogen bonding interaction with the -NH,but the interaction was very weak and could not be el？ cient anion recognition. The further insights to the nature of interaction were investigated by 1 H NMR titration experiments and theoretical investigation,which demonstrated that the receptor 1 and 2 complexed anion through hydrogen bonding interaction with OH better than NH.

关 键 词：阴离子识别 酚羟基 酰胺 

分 类 号：O657.3[理学—分析化学]