| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Eychmüller, Alexander
Universität Hamburg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Organosilicon-Based Ligand Design for High-Performance Perovskite Nanocrystal Films for Color Conversion and X-ray Imagingcitations
- 2023Voltage-Controlled ON-OFF-Switching of Magnetoresistance in FeOx/Fe/Au Aerogel Networks
- 2023Recipes and designs for aerogelscitations
- 2023Structural investigations of Au–Ni aerogels: morphology and element distributioncitations
- 2022Self-Supported Three-Dimensional Quantum Dot Aerogels as a Promising Photocatalyst for CO2 Reduction
- 2021Unprecedented Catalytic Activity and Selectivity in Methanol Steam Reforming by Reactive Transformation of Intermetallic In–Pt Compoundscitations
- 2020Increasing the Diversity and Understanding of Semiconductor Nanoplatelets by Colloidal Atomic Layer Deposition
- 2020Heterostructured Bismuth Telluride Selenide Nanosheets for Enhanced Thermoelectric Performance
- 2018Structural Analysis and Electrochemical Properties of Bimetallic Palladium–Platinum Aerogels Prepared by a Two‐Step Gelation Processcitations
- 2018Nanostructuring noble metals as unsupported electrocatalysts for polymer electrolyte fuel cellscitations
- 2018Self – supporting Hierarchical Porous PtAg Alloy Nanotubular Aerogels as Highly Active and Durable Electrocatalystscitations
- 2018Effect of Acid Washing on the Oxygen Reduction Reaction Activity of Pt-Cu Aerogel Catalystscitations
- 2018Core–Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reactioncitations
- 2018Unsupported Pt-Ni Aerogels with Enhanced High Current Performance and Durability in Fuel Cell Cathodescitations
- 2017Core–Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reactioncitations
- 2017Homogeneity and Elemental Distribution in Self-Assembled Bimetallic Pd-Pt Aerogels prepared by a spontaneous one-step gelation processcitations
- 20173D Assembly of All-Inorganic Colloidal Nanocrystals into Gels and Aerogelscitations
- 2016Anodically fabricated TiO2–SnO2 nanotubes and their application in lithium ion batteriescitations
- 20165-(2-Mercaptoethyl)-1H-tetrazolecitations
- 2016Gold aerogels: Three-dimensional assembly of nanoparticles and their use as electrocatalytic interfacescitations
- 2016pH and concentration dependence of the optical properties of thiol-capped CdTe nanocrystals in water and D2O
- 2016Homogeneity and elemental distribution in self-assembled bimetallic Pd–Pt aerogels prepared by a spontaneous one-step gelation processcitations
- 2015A spray-coating process for highly conductive silver nanowire networks as the transparent top-electrode for small molecule organic photovoltaicscitations
- 20153D assembly of silica encapsulated semiconductor nanocrystalscitations
- 2015Noble Metal Aerogels - Synthesis, Characterization, and Application as Electrocatalysts
- 2014Hybrid plasmonic/semiconductor nanoparticle monolayer assemblies as hyperbolic metamaterials
- 2014Multimetallic aerogels by template-free self-assembly of Au, Ag, Pt, and Pd nanoparticlescitations
- 2013Mixed aerogels from Au and CdTe nanoparticlescitations
- 2011Enhanced nucleation of vortices in soft magnetic materials prepared by silica nanosphere lithographycitations
- 2010Fabrication of two-dimensional Au@FePt core-shell nanoparticle arrays by photochemical metal depositioncitations
- 2009Hydrogels and aerogels from noble metal nanoparticlescitations
Places of action
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article
3D assembly of silica encapsulated semiconductor nanocrystals
Abstract
S.12713-12721 ; Non-ordered porous networks, so-called aerogels, can be achieved by the 3D assembly of quantum dots (QDs). These materials are well suited for photonic applications, however a certain quenching of the photoluminescence (PL) intensity is observed in these structures. This PL quenching is mainly attributed to the energy transfer mechanisms that result from the close contact of the nanoparticles in the network. Here, we demonstrate the formation of a novel aerogel material with non-quenching PL behaviour by non-classical, reversible gel formation from tetrazole capped silica encapsulated QDs. Monitoring of the gelation/degelation by optical spectroscopy showed that the optical properties of the nanocrystals could be preserved in the 3D network since no spectral shifts and lifetime shortening, which can be attributed to the coupling between QDs, are observed in the gels as compared to the original colloidal solutions. In comparison with other QD-silica monoliths, QDs in our gels are homogeneously distributed with a distinct and controllable distance. In addition we show that the silica shell is porous and allows metal ions to pass through the shell and interact with the QD core causing detectable changes of the emission properties. We further show the applicability of this gelation method to other QD materials which sets the stage for facile preparation of a variety of mixed gel structures. ; 7 ; Nr.29