The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks

• Ali Javed,
• Felix Steinke,
• Stephan Wöhlbrandt,
• Hana Bunzen,
• Norbert Stock and
• Michael Tiemann

Beilstein J. Nanotechnol. 2022, 13, 437–443, doi:10.3762/bjnano.13.36

• materials are currently being discussed as potential alternatives. These include coordination polymers (CPs), covalent organic frameworks (COFs), polyoxometalates (POMs), hydrogen-bonded organic frameworks (HOFs), and mesoporous organosilica materials (MPOs) [3][9][10][11]. In particular, proton-conducting

TiO_x/Pt₃Ti(111) surface-directed formation of electronically responsive supramolecular assemblies of tungsten oxide clusters

• Marco Moors,
• Yun An,
• Agnieszka Kuc and
• Kirill Yu. Monakhov

Beilstein J. Nanotechnol. 2021, 12, 203–212, doi:10.3762/bjnano.12.16

• (e.g., polyoxometalates [5][6]) with many distinct and stable redox states. Recently, representatives of this interesting chemical class have also been shown to act as stable single-molecule three‐state transistors [7]. However, controlled adsorption and molecular ordering on surfaces remain

Green and energy-efficient methods for the production of metallic nanoparticles

• Mitra Naghdi,
• Mehrdad Taheran,
• Satinder K. Brar,
• M. Verma,
• R. Y. Surampalli and
• J. R. Valero

Beilstein J. Nanotechnol. 2015, 6, 2354–2376, doi:10.3762/bjnano.6.243

• , researchers had the opportunity to investigate eco-friendly reagents and new energy transfer techniques. In order to substitute the harmful reagents with green ones, researchers worked on different types of saccharides, polyols, carboxylic acids, polyoxometalates and extracts of various plants that can play

• can result in less energy and raw material consumption, and also less waste generation [118]. For example, polyoxometalates (POMs) can act as a photocatalysts in the synthesis of metallic NPs so that the reactions can take place at room temperature within several minutes [134]. Degradability: Chemical

• and prism-like NPs [22]. Polyoxometalates Polyoxometalates (POMs) are anionic structures with transition metal atoms in their highest oxidation state. These materials can exhibit tremendous structural variety and interesting properties such as reversible electron exchange behavior that make them ideal

Possibilities and limitations of advanced transmission electron microscopy for carbon-based nanomaterials

• Xiaoxing Ke,
• Carla Bittencourt and
• Gustaaf Van Tendeloo

Beilstein J. Nanotechnol. 2015, 6, 1541–1557, doi:10.3762/bjnano.6.158

• frequently employed as hosts for various catalysts [34]. We can demonstrate this using the example of functionalized graphene anchored by a water-splitting catalyst based on polyoxometalates (POMs). By imaging the nanohybrids at 80 kV, the supporting graphene is protected to a large degree and remains stable

Controlling the dispersion of supported polyoxometalate heterogeneous catalysts: impact of hybridization and the role of hydrophilicity–hydrophobicity balance and supramolecularity

• Gijo Raj,
• Colas Swalus,
• Eglantine Arendt,
• Pierre Eloy,
• Michel Devillers and
• Eric M. Gaigneaux

Beilstein J. Nanotechnol. 2014, 5, 1749–1759, doi:10.3762/bjnano.5.185

• 5819 SPRAM (CEA/CNRS/UJF-Grenoble 1), Laboratoire d’Electronique Moléculaire, Organique et Hybride, 17 rue des Martyrs, 38054 Grenoble cedex 9, France 10.3762/bjnano.5.185 Abstract The hybridization of polyoxometalates (POMs) through an organic–inorganic association offers several processing

• enable to develop highly dispersed POM-based heterogeneous catalysts with enhanced functionalities. Keywords: atomic force microscopy; heterogeneous hybrid catalyst; organic–inorganic hybrid materials; polyoxometalates; supramolecular organization; Introduction Polyoxometalates (POM) are well-defined

• polyoxometalates (Keggin [PW12O40]3−, and Wells–Dawson [P2Mo18O62]6−), as well as their organic–inorganic hybrid materials formed from dimethyldioctadecylammonium bromide (DODA) on solid surfaces. The height of the POM anions measured by AFM was in good agreement with their molecular dimensions. The orientation of

Visible light photooxidative performance of a high-nuclearity molecular bismuth vanadium oxide cluster

• Johannes Tucher and
• Carsten Streb

Beilstein J. Nanotechnol. 2014, 5, 711–716, doi:10.3762/bjnano.5.83

• photocatalysts is a well-established method which gives access to materials for which light absorption, catalytic activity and selectivity can be tuned by structural and chemical modifications [1][2][3][4][5][6]. Prime examples for this approach are molecular metal oxides, so-called polyoxometalates (POMs) [7][8

• systematic studies into the tuning of (photo-)chemical properties of polyoxometalates by selective cluster functionalization with a range of s-block [27][28], p-block [29], d-block [30][31] and f-block [32] metals. Using this approach, we were able to demonstrate that molybdate clusters can be functionalized