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Claudia Backes
Heidelberg University
Organic chemistryInorganic chemistryChemistryMaterials scienceCarbon nanotube
96Publications
32H-index
5,556Citations
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Publications 95
Newest
#1Zheling LiH-Index: 14
#2Robert J. YoungH-Index: 83
Last. Sarah J. HaighH-Index: 37
view all 12 authors...
Liquid phase exfoliation (LPE) is the principal method of producing two-dimensional (2D) materials such as graphene in large quantities with a good balance between quality and cost, and is now wide...
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Last. Claudia Backes (Heidelberg University)H-Index: 32
view all 9 authors...
Thin films of noble-metal-based transition metal dichalcogenides, such as PtSe_2 have attracted increasing attention due to their interesting layer-number dependent properties and application potential. While it is difficult to cleave bulk crystals down to mono- and few-layers, a range of growth techniques have been established producing material of varying quality and layer number. However, to date, no reliable high-throughput characterization to assess layer number exists. Here, we use top-...
#1Sebastian Grieger (Heidelberg University)H-Index: 2
#2Beata M. Szydłowska (Heidelberg University)H-Index: 8
Last. Claudia Backes (Heidelberg University)H-Index: 32
view all 9 authors...
: In recent years, various functionalization strategies for transition metal dichalcogenides have been explored to tailor the materials' properties and to provide anchor points for the fabrication of hybrid structures. In this report, new insights into the role of the surfactant in functionalization reactions are described. Using the spontaneous reaction of WS 2 with chloroauric acid as a model reaction, the regioselective formation of gold nanoparticles on WS 2 is shown to be heavily dependent ...
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#1Xin Chen (FAU: University of Erlangen-Nuremberg)H-Index: 1
#2Peter Denninger (FAU: University of Erlangen-Nuremberg)H-Index: 1
Last. Andreas Hirsch (FAU: University of Erlangen-Nuremberg)H-Index: 76
view all 8 authors...
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#1Izabela Jurewicz (University of Surrey)H-Index: 12
#2Alice A. K. King (University of Sussex)H-Index: 8
Last. Claudia Backes (Heidelberg University)H-Index: 32
view all 15 authors...
High quality opal-like photonic crystals containing graphene are fabricated using evaporation-driven self-assembly of soft polymer colloids. A miniscule amount of pristine graphene within a colloidal crystal lattice results in the formation of colloidal crystals with a strong angle-dependent structural color and a stop band that can be reversibly shifted across the visible spectrum. The crystals can be mechanically deformed or can reversibly change color as a function of their temperature, hence...
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#1Aideen Griffin (Trinity College, Dublin)H-Index: 6
#2Katharina Nisi (Heidelberg University)H-Index: 2
Last. Claudia Backes (Heidelberg University)H-Index: 32
view all 7 authors...
Liquid-phase exfoliation has progressed in recent years to become a common method for production of 2D materials. During exfoliation, surfactants can be used to stabilize the nanosheets against rea...
2 CitationsSource
#1Francesco Foschi (Heidelberg University)H-Index: 2
#2Kevin Synnatschke (Heidelberg University)H-Index: 2
Last. Lutz H. Gade (Heidelberg University)H-Index: 46
view all 8 authors...
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#1Francesco Foschi (Heidelberg University)H-Index: 2
#2Kevin Synnatschke (Heidelberg University)H-Index: 2
Last. Lutz H. Gade (Heidelberg University)H-Index: 46
view all 8 authors...
New luminogens for aggregation-induced emission (AIE), which are characterized by a branched cross-conjugated 2,6-bis(1,2,2-triarylvinyl)pyridine motif, have been synthesized exploiting the one-pot Ti-mediated tetraarylation of 2,6-bis(arylethynyl)pyridines. Thin layer solid-state emitters were prepared by spin-coating of the luminogens, while AIE-colloidal dispersions were investigated in terms of optical density and scattering behaviour. This has given insight into particle size distributions,...
1 CitationsSource
#1Ralph Z. Lange (ETH Zurich)
#1Ralph Z. Lange (ETH Zurich)H-Index: 1
Last. A. Dieter Schlüter (ETH Zurich)H-Index: 41
view all 11 authors...
2D polymer sheets with six positively charged pyrylium groups at each pore edge in a stacked single crystal can be transformed into a 2D polymer with six pyridines per pore by exposure to gaseous ammonia. This reaction furnishes still a crystalline material with tunable protonation degree at regular nano-sized pores promising as separation membrane. The exfoliation is compared for both 2D polymers with the latter being superior. Its liquid phase exfoliation yields nanosheet dispersions, which ca...
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#1Xin Chen (FAU: University of Erlangen-Nuremberg)H-Index: 1
#2Peter Denninger (FAU: University of Erlangen-Nuremberg)H-Index: 1
Last. Andreas Hirsch (FAU: University of Erlangen-Nuremberg)H-Index: 76
view all 8 authors...
Two-dimensional (2D) molybdenum disulfide (MoS 2 ) holds great promise in electronic and optoelectronic applications owing to its unique structure and intriguing properties. The intrinsic defects such as sulfur vacancies (SVs) of MoS 2 nanosheets are found to be detrimental to the device efficiency. To mitigate this problem, functionalization of 2D MoS 2 using thiols has emerged as one of the key strategies for engineering defects. Herein, we demonstrate an approach to controllably engineer the ...
2 CitationsSource
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