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论文类型：期刊论文

发表时间：2012-08-01

发表刊物：JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY

收录刊物：SCIE、Scopus

卷号：73

期号：1-4

页面范围：415-421

ISSN号：0923-0750

关键字：beta-Cyclodextrin (beta-CD); Modification; Molecular recognition; Naphthalenediamine; Yttrium; NMR; Complexation

摘要：The 6-OH group of beta-cyclodextrin was modified by diethylene triamine and triethylene tetramine, respectively, mono[6-diethylenetriamino]-6-deoxy-beta-cyclodextrin (DTCD) and mono[6-triethylenetetraamino]-6-deoxy-beta-cyclodextrin (TTCD) were synthesized, which included 1,5-naphthalenediamine and 1,8-naphthalenediamine, respectively, in the presence of rare earth metal yttrium chloride. As a result, four ternary inclusion complexes (host-guest-metal) formed, which were characterized via (HNMR)-H-1 spectroscopy. The chemical shift variations of host and guest molecules were studied. The stoichiometric proportion of host and guest molecules is 2:1 for all the complexes. Signal degeneration still exists for the guest molecules after the inclusion process, which verifies the symmetrical conformation of guest molecules inside the cavities of two host molecules. All the four complexes exhibit "sandwich"-typed structure.