1610046-75-7Relevant academic research and scientific papers
2D arrays of organic qubit candidates embedded into a pillared-paddlewheel metal-organic framework
Forbes, Malcolm D. E.,Garcia-Garibay, Miguel A.,Jellen, Marcus J.,Ayodele, Mayokun J.,Cantu, Annabelle
, p. 18513 - 18521 (2020)
The creation of ordered arrays of qubits that can be interfaced from the macroscopic world is an essential challenge for the development of quantum information science (QIS) currently being explored by chemists and physicists. Recently, porous metal?organic frameworks (MOFs) have arisen as a promising solution to this challenge as they allow for atomic-level spatial control of the molecular subunits that comprise their structures. To date, no organic qubit candidates have been installed in MOFs despite their structural variability and promise for creating systems with adjustable properties. With this in mind, we report the development of a pillared-paddlewheel-type MOF structure that contains 4,7-bis(2-(4-pyridyl)-ethynyl) isoindoline N-oxide and 1,4-bis(2-(4-pyridyl)-ethynyl)-benzene pillars that connect 2D sheets of 9,10-dicarboxytriptycene struts and Zn2(CO2)4 secondary binding units. The design allows for the formation of ordered arrays of reorienting isoindoline nitroxide spin centers with variable concentrations through the use of mixed crystals containing the secondary 1,4-phenylene pillar. While solvent removal causes decomposition of the MOF, magnetometry measurements of the MOF containing only N-oxide pillars demonstrated magnetic interactions with changes in magnetic moment as a function of temperature between 150 and 5 K. Variable-temperature electron paramagnetic resonance (EPR) experiments show that the nitroxides couple to one another at distances as long as 2 nm, but act independently at distances of 10 nm or more. We also use a specially designed resonance microwave cavity to measure the face-dependent EPR spectra of the crystal, demonstrating that it has anisotropic interactions with impingent electromagnetic radiation.
Aromatic amine compound containing structure of tetramethyl isoindoline or oxide thereof, and preparation method of same
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, (2018/06/26)
The invention provides an aromatic amine compound containing structure of tetramethyl isoindoline or an oxide thereof, and a preparation method of same. The aromatic amine compound containing the tetramethyl isoindoline oxide structure is 4,7-bis(4-aminophenyl)-1,1,3,3-tetramethyl isoindoline oxide which is represented as the chemical formula (III), and the aromatic amine compound containing the tetramethyl isoindoline structure is 4,7-bis(4-aminophenyl)-1,1,3,3-tetramethyl isoindoline which is represented as the chemical formula (IV). The aromatic amine compound containing the structure of the tetramethyl isoindoline or the oxide thereof can be an important precursor for synthesis of organic porous covalent framework materials.
A crystalline porous coordination polymer decorated with nitroxyl radicals catalyzes aerobic oxidation of alcohols
Li, Liangchun,Matsuda, Ryotaro,Tanaka, Iku,Sato, Hiroshi,Kanoo, Prakash,Jeon, Hyung Joon,Foo, Maw Lin,Wakamiya, Atsushi,Murata, Yasujiro,Kitagawa, Susumu
supporting information, p. 7543 - 7546 (2014/06/10)
A porous coordination polymer (PCP) has been synthesized employing an organic ligand in which a stable free radical, isoindoline nitroxide, is incorporated. The crystalline PCP possesses one-dimensional channels decorated with the nitroxyl catalytic sites. When O2 gas or air was used as the oxidant, this PCP was verified to be an efficient, recyclable, and widely applicable catalyst for selective oxidation of various alcohols to the corresponding aldehydes or ketones.
