102587-98-4Relevant articles and documents
Dysprosium-carboxylate nanomeshes with tunable cavity size and assembly motif through ionic interactions
Cirera,Dorevi?,Otero,Gallego,Bonifazi,Miranda,Ecija
, p. 11227 - 11230 (2016)
We report the design of dysprosium directed metallo-supramolecular architectures on a pristine Cu(111) surface. By an appropriate selection of the ditopic molecular linkers equipped with terminal carboxylic groups (TPA, PDA and TDA species), we create reticular and mononuclear metal-organic nanomeshes of tunable internodal distance, which are stabilized by eight-fold Dy?O interactions. A thermal annealing treatment for the reticular Dy:TDA architecture gives rise to an unprecedented quasi-hexagonal nanostructure based on dinuclear Dy clusters, exhibiting a unique six-fold Dy?O bonding motif. All metallo-supramolecular architectures are stable at room temperature. Our results open new avenues for the engineering of supramolecular architectures on surfaces incorporating f-block elements forming thermally robust nanoarchitectures through ionic bonds.
Synthesis of 2,7-Dibromopyrene
Lee, Hongmee,Harvey, Ronald G.
, p. 2847 - 2848 (1986)
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Molecular compasses and gyroscopes. II. Synthesis and characterization of molecular rotors with axially substituted bis[2-(9-triptycyl)ethynyl]arenes
Godinez, Carlos E.,Zepeda, Gerardo,Garcia-Garibay, Miguel A.
, p. 4701 - 4707 (2002)
We have developed a simple convergent procedure for the synthesis of molecular rotors consisting of a central aromatic group coupled with two axially positioned ethynyltriptycenes. Molecular rotors with 1,4-phenylene (1), 1,4′-1,1′-biphenylene (2), 9, 10-anthracenylene (3), and 2,7-pyrenylene (4) groups were prepared by Pd(0)-catalyzed coupling of ethynyl triptycenes with the corresponding dibromoarenes. Although compounds 1-4 were not expected to have free rotation in the solid state, the rotational potentials of 1 and 3 were analyzed by semiempirical methods and the crystal packing of 1 was analyzed to design the structures most likely to yield a functional rotor in the solid state. Semiempirical PM3 calculations predict compounds 1, 2, and 4 to have frictionless internal rotation even at temperatures as low as 25 K, while compound 3 is expected to have a barrier of ca. 4 kcal/mol.
Pyrene-based compound and organic light emitting diode comprising the same
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, (2020/05/19)
A pyrene-based compound, and an organic light-emitting diode including the pyrene-based compound are provided.