In 2015,Dalton Transactions included an article by Figueira, Joao; Czardybon, Wojciech; Mesquita, Jose Carlos; Rodrigues, Joao; Lahoz, Fernando; Russo, Luca; Valkonen, Arto; Rissanen, Kari. Recommanded Product: 74029-40-6. The article was titled 《Synthesis, characterization and solid-state photoluminescence studies of six alkoxy phenylene ethynylene dinuclear palladium(II) rods》. The information in the text is summarized as follows:
A rare family of six discrete binuclear [PdCl(PEt3)2] phenylene ethynylene rods with alkoxy side chains (methoxy, ethoxy and heptoxy) were developed, and their solid-state photoluminescence results were presented and discussed. The shorter bridging ligands are H-CC-C6H2(R)2-CC-H, where R = H, OCH3, OC2H5, and OC7H15, whereas the longer ones are based on H-CC-C6H4-CC-C6H2(R)2-CC-C6H4-CC-H, where R = OCH3, OC2H5. These ligands display increasing length in both the main dimension (backbone length) as well as the number of carbons in the side chains (R, alkoxide side chain) that stem from the central phenylene moiety. The x-ray crystal structures of two of the prepared complexes are reported: one corresponds to a shorter rod, 1,4-bis[trans-(PEt3)2ClPd-CC]-2,5-diethoxybenzene (6c), while the 2nd one is associated with a longer rod, the binuclear complex 1,4-bis[trans-(PEt3)2ClPd-4-(-CC-C6H4-CC)]-2,5-diethoxybenzene (7c). All new compounds were characterized by NMR spectroscopy (1H, 13C{1H} and 31P{1H}) as well as ESI-MS(TOF), EA, FTIR, UV-visible, cyclic voltammetry and solid-state photoluminescence. The authors’ work shows the influence of the alkoxy side chains on the electronic structure of the family of binuclear Pd rods by lowering its oxidation potential. In addition to this, the increase of the length of the bridge results in a higher oxidation potential. Solid state photoluminescence results indicate that Pd complexes were characterized by a marked decrease in both the emission intensity and the fluorescence lifetime values as compared to their ligands. This behavior could be due to some degree of ligand-to-metal charge transfer. The experimental part of the paper was very detailed, including the reaction process of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Recommanded Product: 74029-40-6)
1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Ethers do have nonbonding electron pairs on their oxygen atoms, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Recommanded Product: 74029-40-6
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem