中性 Cd(II)-MOF 对有机六元环类似物的吸附和分离来源于不对称希夫碱配体。

Adsorption and separation of organic six-membered ring analogues on neutral Cd(II)-MOF generated from asymmetric schiff-base ligand.

机构信息

College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Engineering Research Center of Pesticide and Medicine Intermediate Clean Production, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People's Republic of China.

出版信息

Inorg Chem. 2010 Dec 6;49(23):11164-73. doi: 10.1021/ic101756t. Epub 2010 Oct 25.

DOI:10.1021/ic101756t

PMID:20973558

Abstract

A new CdL(2)-MOF was synthesized based on an asymmetric Schiff-base ligand LH, which is obtained by condensation of 5-formyl-8-hydroxyquinoline and 3-pyridinecarboxylic acid hydrazide. A series of organic six-membered ring analogues, namely, 1,4-dioxane, cyclohexane, cyclohexene, benzene, cyclohexanone, and cyclohexanol, can be absorbed by the CdL(2) porous framework in liquid-phase to generate G(n)⊂CdL(2) (n = 1 and 2) host-guest complexes. In addition, the CdL(2) host framework displays different affinity for these six-membered ring substrates and can effectively separate them under mild conditions (i.e., 1, 4-dioxane > cyclohexane > cyclohexene and benzene > cyclohexanone > cyclohexanol). The empty CdL(2) displays strong green-yellow emission. Furthermore, these host-guest systems show an interesting guest-driven luminescent emission, and the emission intensities of these guest-loaded complexes are effectively reduced.

摘要

一种新的 CdL(2)-MOF 是基于不对称希夫碱配体 LH 合成的，LH 是由 5-甲酰基-8-羟基喹啉和 3-吡啶羧酸酰肼缩合得到的。一系列有机六元环类似物，即 1,4-二氧六环、环己烷、环己烯、苯、环己酮和环己醇，可以在液相中被 CdL(2)多孔骨架吸收，生成 G(n)⊂CdL(2)（n = 1 和 2）主客体配合物。此外，CdL(2)主体骨架对这些六元环底物表现出不同的亲和力，并能在温和条件下有效分离它们（即，1,4-二氧六环>环己烷>环己烯和苯>环己酮>环己醇）。空的 CdL(2)显示出强烈的绿黄色发射。此外，这些主客体体系表现出有趣的客体驱动发光发射，并且这些负载客体的配合物的发射强度被有效降低。