Highly oriented surface-growth and covalent dye labeling of mesoporous metal–organic frameworks

Hinterholzinger, Florian M.; Wuttke, Stefan; Roy, P.; Preuße, Thomas; Schaate, Andreas; Behrens, Peter; Godt, Adelheid; Bein, Thomas

doi:10.1039/c2dt12265k

Cited by 29 publications

(19 citation statements)

References 19 publications

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“…For example, gold substrates were prepared by sputtering methods. 51 The synthesis of BDT-COF was carried out under the same reaction conditions as for the growth on metal oxide surfaces, where a freshly prepared gold substrate replaced the ITO-coated glass. GID investigations confirmed the formation of oriented thin films along the c -axis, consistent with the GID experiments of thin BDT-COF film grown on ITO ( Figure S20, Supporting Information ).…”

Section: Resultsmentioning

confidence: 99%

Oriented Thin Films of a Benzodithiophene Covalent Organic Framework

et al. 2014

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A mesoporous electron-donor covalent organic framework based on a benzodithiophene core, BDT-COF, was obtained through condensation of a benzodithiophene-containing diboronic acid and hexahydroxytriphenylene (HHTP). BDT-COF is a highly porous, crystalline, and thermally stable material, which can be handled in air. Highly porous, crystalline oriented thin BDT-COF films were synthesized from solution on different polycrystalline surfaces, indicating the generality of the synthetic strategy. The favorable orientation, crystallinity, porosity, and the growth mode of the thin BDT-COF films were studied by means of X-ray diffraction (XRD), 2D grazing incidence diffraction (GID), transmission and scanning electron microscopy (TEM, SEM), and krypton sorption. The highly porous thin BDT-COF films were infiltrated with soluble fullerene derivatives, such as [6,6]-phenyl C61 butyric acid methyl ester (PCBM), to obtain an interpenetrated electron-donor/acceptor host–guest system. Light-induced charge transfer from the BDT-framework to PCBM acceptor molecules was indicated by efficient photoluminescence quenching. Moreover, we monitored the dynamics of photogenerated hole-polarons via transient absorption spectroscopy. This work represents a combined study of the structural and optical properties of highly oriented mesoporous thin COF films serving as host for the generation of periodic interpenetrated electron-donor and electron-acceptor systems.

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Section: Resultsmentioning

confidence: 99%

Oriented Thin Films of a Benzodithiophene Covalent Organic Framework

et al. 2014

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“…It seems therefore that multicationic species are less efficiently accumulated than the monocation, which can be due to the fact that they required more counteranions from the electrolyte to maintain charge balance [47] (anion transport is restricted in such silica channels [48]). At same charge, the size of the probe might have some effect (i.e., more effective accumulation of PQ 2+ having a kinetic diameter of 0.58 nm [73] than DQ 2+ with kinetic diameter of about 0.7 nm [74]) but this is expected to be quite limited if considering that the bulkier cation (Ru(bpy)3 2+ , characterized by a size of 1.2-1.3 nm [75]) led to enhancement values close to that of DQ 2+ (compare green and orange curves in Fig. 1).…”

Section: Accumulation Of Different Cationic Redox Probes Inside the Mesochannelsmentioning

confidence: 99%

Voltammetric behaviour of cationic redox probes at mesoporous silica film electrodes

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Herzog

et al. 2020

Journal of Electroanalytical Chemistry

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…In UiO-66@Si, UiO-66 grows as a single crystal monolayer with a high preference for the (111) phase,32 as evidenced by the PXRD pattern of the UiO-66@Si samples in which some peaks of the bulk UiO-66 pattern are missing (Fig. S7, ESI†).…”

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Uniform distribution of post-synthetic linker exchange in metal–organic frameworks revealed by Rutherford backscattering spectrometry

et al. 2017

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Rutherford backscattering spectrometry (RBS) has been used for the first time to study post-synthetic linker exchange (PSE) in metal–organic frameworks. RBS is a non-invasive method to quantify the amount of introduced linker, as well as providing a means for depth profiling in order to identify the preferred localization of the introduced linker. The exchange of benzenedicarboxylate (bdc) by similarly sized 2-iodobenzenedicarboxylate (I-bdc) proceeds considerably slower than migration of I-dbc through the UiO-66 crystal. Consequently, the I-bdc is found evenly distributed throughout the UiO-66 samples, even at very short PSE exposure times.

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Highly oriented surface-growth and covalent dye labeling of mesoporous metal–organic frameworks

Abstract: PapersSupramolecular isomers of metal-organic frameworks: the role of a new mixed donor imidazolate-carboxylate tetradentate ligand

Cited by 29 publications

References 19 publications

Oriented Thin Films of a Benzodithiophene Covalent Organic Framework

Oriented Thin Films of a Benzodithiophene Covalent Organic Framework

Voltammetric behaviour of cationic redox probes at mesoporous silica film electrodes

Uniform distribution of post-synthetic linker exchange in metal–organic frameworks revealed by Rutherford backscattering spectrometry

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