The author of 《Rigid-Strut-Containing Crown Ethers and [2]Catenanes for Incorporation into Metal-Organic Frameworks》 were Zhao, Yan-Li; Liu, Lihua; Zhang, Wenyu; Sue, Chi-Hau; Li, Qiaowei; Miljanic, Ognjen S.; Yaghi, Omar M.; Stoddart, J. Fraser. And the article was published in Chemistry – A European Journal in 2009. Related Products of 74029-40-6 The author mentioned the following in the article:
To introduce crown ethers into the struts of metal-organic frameworks (MOFs), general approaches were developed for the syntheses of bis(4-carboxyphenylethynyl)-substituted dibenzo[30]crown-10 (DB30C10DA), di-2,3-naphtho[30]crown-10 (DN30C10DA), bisparaphenylene[34]crown-10 (BPP34C10DA), and 1,5-naphthoparaphenylene[36]crown-10 (NPP36C10DA). These novel crown ethers not only retain the characteristics of their parent crown ethers since they can both bind cationic guests and serve as templates for making mech. interlocked mols. (MIMs), such as catenanes and rotaxanes, but they also present coordination sites to connect with secondary building units (SBUs) in MOFs. The binding behavior of BPP34C10DA with 1,1′-dimethyl-4,4′-bipyridinium bis(hexafluorophosphate) (DMBP·2PF6) was studied by UV/visible, fluorescence, and NMR spectroscopic techniques. The crystal superstructure of the complex DMBP·2PF6⊂ BPP34C10DA was determined by x-ray crystallog. The NPP36C10DA-based [2]catenane (H2NPP36C10DC-CAT·4PF6) and the BPP34C10DA-based [2]catenane (H2BPP34C10DC-CAT·4PF6) were prepared in DMF at room temperature by the template-directed clipping reactions of the planarly chiral NPP36C10DA and BPP34C10DA with 1,1′-[1,4-phenylenebis(methylene)]di-4,4′-bipyridin-1-ium bis(hexafluorophosphate) and 1,4-bis(bromomethyl)benzene, resp. The crystal structure of the di-Me ester (BPP34C10DE-CAT·4PF6) of the [2]catenane H2BPP34C10DC-CAT·4PF6 was studied by x-ray crystallog., which revealed racemic R and S isomers with planar chirality present in the crystal in a 1:1 ratio. These crown ether based struts serve as excellent organic ligands to bind with transition metal ions in the construction of MOFs: the crown ethers BPP34C10DA and NPP36C10DA in the presence of Zn(NO3)2·4 H2O afforded the MOF-1001 and MOF-1002 frameworks, resp. The crystal structures of MOF-1001 and MOF-1002 are both cubic and display Fm3̅m symmetry. The unit cell parameter of the metal-organic frameworks is a 52.9345 Å. Since such MOFs, containing electron-donating crown ethers are capable of docking incoming electron-accepting substrates in a stereoelectronically controlled fashion, the present work opens a new access to the preparation and application of MOFs.1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Related Products of 74029-40-6) was used in this study.
1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Related Products of 74029-40-6Although ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem