文献类型：期刊文献

英文题名：The recognition of n-alkyl phosphonic or carboxylic acid by mono-squaramide-functionalised pillar[5]arenes

作者：Jin, Can[1,2] Zhang, Xiaoning[2] Wu, Xuan[2] Zhang, Man[2] Jiang, Juli[2] Lin, Chen[2] Wang, Leyong[2]

第一作者：Jin, Can;金灿

通信作者：Lin, C[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210093, Jiangsu, Peoples R China

年份：2015

卷号：27

期号：5-6

起止页码：329-335

外文期刊名：SUPRAMOLECULAR CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000350879800003)】；

基金：We are grateful for the National Natural Science Foundation of China (21302092) and the Natural Science Foundation of Jiangsu (BK2011551).

语种：英文

外文关键词：pillar[5]arene; n-hexylphosphonic acid; squaramide; host-guest recognition

摘要：Abstract: The synthesis of a novel mono-squaramide-functionalised pillar[5]arene 1a is reported, by which n-hexylphosphonic acid (HPA) or n-heptanoic acid (HA) could be recognised. The results of H-1 NMR titration, Job Plot, ESI-MS and 2D NMR experiments reveal that 1a forms a 1:1 stoichiometric complex with HPA and HA, respectively, and its association constants (log K/M-1) with HPA and HA are determined to be 3.83 +/- 0.05 and 1.98 +/- 0.04, respectively, suggesting much stronger binding ability of 1a with HPA over HA. To compare with 1a, 1b with the electron-withdrawing group (CF3) on the phenyl ring of squaramide moiety is synthesised as well, which shows the similar selective binding ability for HPA and HA but with a little stronger binding ability than 1a.