Reversible cation exchange on macroscopic CdSe/CdS and CdS nanorod based gel networks

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dc.identifier.uri Lübkemann, Franziska ger Rusch, Pascal ger Getschmann, Sven ger Schremmer, Björn ger Schäfer, Malte ger Schulz, Marcel ger Hoppe, Bastian ger Behrens, Peter ger Bigall, Nadja C. ger Dorfs, Dirk ger 2020-03-25T16:33:20Z 2020-03-25T16:33:20Z 2020
dc.identifier.citation Lübkemann, F. et al.: Reversible cation exchange on macroscopic CdSe/CdS and CdS nanorod based gel networks. In: Nanoscale 8 (2020), S. 5038-5047. DOI: ger
dc.description.abstract Over the past decades, cation exchange reactions applied to nanoparticles have opened up synthetic pathways to nanocrystals, which were not accessible by other means before. The limitation of cation exchange on the macroscopic scale of bulk materials is given by the limited ion diffusion within the crystal structure. Lyogels or aerogels are macroscopic, highly voluminous, porous materials composed of interconnected nanoscopic building blocks and hence represent a type of bridge between the macroscopic and the nanoscopic world. To demonstrate the feasibility of cation exchange on such macroscopic nanomaterials, the cation exchange on CdSe/CdS core/shell and CdS nanorod based lyogels to Cu2−xSe/ Cu2−xS and Cu2−xS and the reversible exchange back to CdSe/CdS and CdS lyogels is presented. These copper-based lyogels can also be used as an intermediate state on the way to other metal chalcogenidebased macroscopic structures. By reversed cation exchange back to cadmium an additional proof is given, that the crystal structures remain unchanged. It is shown that cation exchange reactions can also be transferred to macroscopic objects like aerogels or lyogels. This procedure additionally allows the access of aerogels which cannot be synthesized via direct destabilization of the respective colloidal solutions. ger
dc.language.iso eng ger
dc.publisher Cambridge : RSC Publishing
dc.relation.ispartofseries Nanoscale 8 (2020) ger
dc.rights CC BY-NC 3.0 Unported ger
dc.rights.uri ger
dc.subject cation exchange reaction eng
dc.subject nanoparticles eng
dc.subject lyogels eng
dc.subject aerogels eng
dc.subject.ddc 540 | Chemie ger
dc.title Reversible cation exchange on macroscopic CdSe/CdS and CdS nanorod based gel networks ger
dc.type article ger
dc.type Text ger
dc.relation.doi 10.1039/c9nr09875e
dc.description.version publishedVersion ger
tib.accessRights frei zug�nglich ger

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