Rationales Design multifunktionaler Nanoporen durch Mischen passender Moleküle

Mastalerz, Michael

doi:10.1002/ange.201107828

Cited by 5 publications

(1 citation statement)

References 37 publications

(12 reference statements)

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“…The Brunauer‐Emmett‐Teller (BET) surface area and the total pore volume for WUT‐1 a calculated from the N 2 adsorption isotherm are 1225 m 2 g −1 and 0.48 cm 3 g −1 , respectively. This is the highest value for NPMs based on metal clusters, and is among the highest values for all NPMs (Table S5) 6b. 13 For a better analysis of the adsorption data at low pressures, the isotherm was plotted using a semi‐logarithmic scale.…”

Section: Methodsmentioning

confidence: 99%

Permanent Porosity Derived From the Self‐Assembly of Highly Luminescent Molecular Zinc Carbonate Nanoclusters

et al. 2013

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Over the past two decades, crystalline microporous materials have attracted major interest, owing to their applications in gas sorption, separation, catalysis, and sensing. [1] Microporous crystalline materials can be constructed from coordinatively or covalently linked building blocks where rigid or semi-rigid molecular scaffolds separate void spaces of different size and geometry. Prominent examples of porous materials showing polymeric structures include zeolites, [2] hybrid metal-organic frameworks (MOFs) or porous coordination polymers (PCPs), [3] covalent organic frameworks (COFs), [4] and Hbonded supramolecular organic frameworks (SOFs). [5] The formation of bonding interactions between building units is an important factor that defines and controls the stability and robustness of these porous polymeric materials. However, discrete molecules may also pack in the solid state to form 3D assemblies that exhibit high permanent porosity. [6] The resulting noncovalent porous materials (NPMs) are distinct from the above polymeric systems, as they are held together by weak noncovalent crystal-packing forces. Modifications of structure by cocrystallization of different building blocks [7] can tune the microcavities in the solid state, and the material can thus conform to the shape or functionality of guest molecules. Moreover, these materials can be highly solubile, an important advantage in their processing to form porous thin films. [7a, 8] NPMs can exhibit extrinsic and/or intrinsic porosity. Intrinsic porosity is associated with the structure of the single-molecule-containing voids, clefts, or cavities, as has been demonstrated for calixarenes, [9] cucurbiturils, [10] cyclodextrins, [11] organic cage compounds, [6, 7a,c] or discrete small organic molecules. [12] In contrast, materials with extrinsic porosity are those where individual molecules pack in the solid-state to form structures with empty spaces between the individual molecules. As discrete molecules tend to form close-packed solids with minimal void volume, extrinsic porosity in NPMs remains a rare phenomenon. [12a, 13] The rational design and preparation of NPMs showing extrinsic porosity based on molecular metal complexes is highly challenging and few examples have been reported. [14] We have demonstrated previously that alkylzinc hydroxides RZnOH can be efficiently transformed into multinuclear alkyzinc carbonate nanoclusters [15] or nanomaterials, such as discrete nanoparticulate zinc carbonate aerogels [15] and ZnO nanoparticles. [16] As shown in Scheme 1 a, the reactivity of the RZnOH species can be rationalized in terms of the presence of both a proton-reactive Zn À C bond and CO 2 -reactive Zn À OH groups. We argued that introduction of an additional auxiliary ligand L to the RZnOH system, followed by CO 2 fixation, could lead to the formation of novel molecular building blocks for new extrinsic NPMs. Herein, we report such a strategy in which the construction of a nanosized cluster [Zn 10 (m 6 -CO 3 ) 4 (L) 12 ] (WUT-1; WUT = War...

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Section: Methodsmentioning

confidence: 99%

Permanent Porosity Derived From the Self‐Assembly of Highly Luminescent Molecular Zinc Carbonate Nanoclusters

et al. 2013

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Permanent Porosity Derived From the Self‐Assembly of Highly Luminescent Molecular Zinc Carbonate Nanoclusters

et al. 2013

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Color‐ and Dimension‐Tunable Light‐Harvesting Organic Charge‐Transfer Alloys for Controllable Photon‐Transport Photonics

et al. 2020

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An electron donor/acceptor pair comprising perylene (Pe) and 9,10‐dicyanoanthracene (DCA) was specifically designed to construct organic charge‐transfer (CT) alloys via weak CT interaction through a solution co‐assembly route. By adjusting the molar ratio between Pe and DCA, we achieve color‐ and dimension‐tunable CT alloy assemblies involving one‐dimensional (1D) (DCA)1−x(Pe)x (0 ≤ x ≤10 %) microribbons and two‐dimensional (2D) (Pe)1−y(DCA)y (0 ≤ y ≤5 %) nanosheets as a consequence of energy transfer from DCA or α‐Pe to Pe‐DCA CT complex. Importantly, dimension‐related optical waveguiding performances are also revealed: continuously adjustable optical loss in 1D (DCA)1−x(Pe)x microribbons and successive conversion from isotropic waveguide to anisotropic waveguide in 2D (Pe)1−y(DCA)y nanosheets. The present work provides a desired platform for in‐depth investigation of light‐harvesting organic CT alloy assemblies, which show promising applications in miniaturized optoelectronic devices.

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Rationales Design multifunktionaler Nanoporen durch Mischen passender Moleküle

Cited by 5 publications

References 37 publications

Permanent Porosity Derived From the Self‐Assembly of Highly Luminescent Molecular Zinc Carbonate Nanoclusters

Permanent Porosity Derived From the Self‐Assembly of Highly Luminescent Molecular Zinc Carbonate Nanoclusters

Permanent Porosity Derived From the Self‐Assembly of Highly Luminescent Molecular Zinc Carbonate Nanoclusters

Color‐ and Dimension‐Tunable Light‐Harvesting Organic Charge‐Transfer Alloys for Controllable Photon‐Transport Photonics

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