NDLI: Reversible Interconversion between Luminescent Isomeric Metal–Organic Frameworks of $[Cu_{4}I_{4}(DABCO)_{2}]$ (DABCO=1,4-Diazabicyclo[2.2.2]octane)

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Reversible Interconversion between Luminescent Isomeric Metal–Organic Frameworks of $[Cu_{4}I_{4}(DABCO)_{2}]$ (DABCO=1,4-Diazabicyclo[2.2.2]octane)

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Reversible Interconversion between Luminescent Isomeric Metal–Organic Frameworks of $[Cu_{4}I_{4}(DABCO)_{2}]$ (DABCO=1,4-Diazabicyclo[2.2.2]octane)

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Braga, Dario Ventura, Barbara Mazzeo, Paolo P. Maini, Lucia
Description	Author Affiliation: Braga D ( Dipartimento di Chimica G.Ciamician, Università di Bologna, Via selmi 2, 40126 Bologna, Italy.)
Abstract	The metal–organic frameworks (MOF) of cluster $[Cu_{4}I_{4}(DABCO)_{2}]$ (DABCO=1,4-diazabicyclo[2.2.2]octane) have been prepared and characterized as two different crystalline forms, I and II. Form I is obtained by reaction of DABCO and CuI in aqueous solution or by solvothermal reaction, while form II is obtained by reacting DABCO and CuI in acetonitrile. Their luminescence properties in the solid state have been analyzed at room temperature and at 77 K. MOF II has bright emission with a maximum at 556 nm that shifts bathochromically at low temperature in conjunction with a marked change in the colour of the emission. The emission of MOF I has a maximum at 580 nm and a less pronounced temperature dependence. The peculiar luminescence properties of the two isomers have been interpreted by utilising current knowledge on the excited states properties of $Cu^{I}$ cubane clusters. The two isomers exhibit a high degree of porosity and can release the disordered solvent molecules trapped in the channels, whilst preserving the crystal structure. Isomer I can be converted into II on exposure to acetonitrile or methanol vapour, whereas II reverts to I when heated in a closed pan at 250 °C.
ISSN	09476539
e-ISSN	15213765
Journal	Chemistry - A European Journal
Issue Number	5
Volume Number	16
Language	English
Publisher	Wiley-VCH;ChemPubSoc Europe
Publisher Date	2010-02-01
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Catalysis

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Diazabicyclo[2.2.2]octane - DABCO

Preparation of Carboxamides from Ketones and Commercial Sodium Amide. Effect of 1,4-Diazabicyclo[2.2.2]octane (DABCO)

Kristallstrukturen der „supramolekularen“ 1,4-Diazabicyclo[2.2.2]octan- Quecksilber(II)-Komplexe [Hg(dabco)I2] und [Hg(dabco)(SCN)2] / Crystal Structures of the “Supram olecular” 1,4-Diazabicyclo[2.2.2]octane Mercury(II) Complexes [Hg(dabco)I2] and [Hg(dabco)(SCN)2]

An efficient oxidation of 2-pyrazolines and isoxazolines by bis-bromine-1,4-diazabicyclo[2.2.2]octane complex (DABCO-Br2)

Efficient solvent- and metal-free Sonogashira protocol catalysed by 1,4-diazabicyclo(2.2.2) octane (DABCO)

Synthesis of New Lewis Basic Room-Temperature Ionic Liquids by Monoquaternization of 1,4-Diazabicyclo[2.2.2]octane (DABCO)

1,4-Diazabicyclo[2.2.2]octane (DABCO) 5-aminotetrazolates

Self-assembly between 1,4-diazabicyclo[2.2.2]octane and bis(hexafluoroalcohols): solid/liquid phase switching for catalyst recycling

An efficient oxidation of 2-pyrazolines and isoxazolines by bisbromine-1,4-diazabicyclo[2.2.2]octane complex (dabco-br2).

Reversible Interconversion between Luminescent Isomeric Metal–Organic Frameworks of $[Cu_{4}I_{4}(DABCO)_{2}]$ (DABCO=1,4-Diazabicyclo[2.2.2]octane)

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Reversible Interconversion between Luminescent Isomeric Metal–Organic Frameworks of $[Cu_{4}I_{4}(DABCO)_{2}]$ (DABCO=1,4-Diazabicyclo[2.2.2]octane)