Adsorption and separation of organic six-membered ring analogues on neutral Cd(II)-MOF generated from asymmetric schiff-base ligand.
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.
Duan
Li
L
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.
Wu
Zhen-Hua
ZH
Ma
Jian-Ping
JP
Wu
Xiang-Wen
XW
Dong
Yu-Bin
YB
D000327:Adsorption; D001554:Benzene / Q000302:isolation & purification*; D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D003510:Cyclohexanes / Q000302:isolation & purification*; D003511:Cyclohexanols / Q000302:isolation & purification*; D003512:Cyclohexanones / Q000302:isolation & purification; D004146:Dioxanes / Q000302:isolation & purification*; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry
D019187:Cadmium Compounds; D003510:Cyclohexanes; D003511:Cyclohexanols; D003512:Cyclohexanones; D004146:Dioxanes; D009942:Organometallic Compounds; D012545:Schiff Bases; C036468:cyclohexanone; D001554:Benzene; C025223:1,4-dioxane