Details
| Original language | English |
|---|---|
| Pages (from-to) | 1903-1911 |
| Number of pages | 9 |
| Journal | Advanced functional materials |
| Volume | 23 |
| Issue number | 15 |
| Publication status | Published - 14 Apr 2013 |
| Externally published | Yes |
Abstract
Mixed metal-semiconductor nanocrystal aerogels are fabricated, which are light-emitting and highly porous macroscopic monoliths. Thiol-stabilized CdTe and Au nanoparticles from aqueous synthesis act as building blocks for the hybrid material. The Au colloids undergo a surface-modification to enhance the particle stability and achieve thiol functionalities. A photochemical treatment is applied for the gelation process which is found to be reversible by subsequent addition of thiol molecules. Via supercritical drying aerogels are formed. The variation of the initial CdTe to Au nanoparticle ratio permits a facile tuning of the content and the properties of the resulting aerogels. The obtained structures were characterized by means of optical spectroscopy, electron microscopy, elemental analysis, and nitrogen physisorption.
Keywords
- aerogels, Au nanocrystals, CdTe nanocrystals, colloidal synthesis, photochemical gelation
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Advanced functional materials, Vol. 23, No. 15, 14.04.2013, p. 1903-1911.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mixed Aerogels from Au and CdTe Nanoparticles
AU - Hendel, Thomas
AU - Lesnyak, Vladimir
AU - Kühn, Laura
AU - Herrmann, Anne Kristin
AU - Bigall, Nadja C.
AU - Borchardt, Lars
AU - Kaskel, Stefan
AU - Gaponik, Nikolai
AU - Eychmüller, Alexander
PY - 2013/4/14
Y1 - 2013/4/14
N2 - Mixed metal-semiconductor nanocrystal aerogels are fabricated, which are light-emitting and highly porous macroscopic monoliths. Thiol-stabilized CdTe and Au nanoparticles from aqueous synthesis act as building blocks for the hybrid material. The Au colloids undergo a surface-modification to enhance the particle stability and achieve thiol functionalities. A photochemical treatment is applied for the gelation process which is found to be reversible by subsequent addition of thiol molecules. Via supercritical drying aerogels are formed. The variation of the initial CdTe to Au nanoparticle ratio permits a facile tuning of the content and the properties of the resulting aerogels. The obtained structures were characterized by means of optical spectroscopy, electron microscopy, elemental analysis, and nitrogen physisorption.
AB - Mixed metal-semiconductor nanocrystal aerogels are fabricated, which are light-emitting and highly porous macroscopic monoliths. Thiol-stabilized CdTe and Au nanoparticles from aqueous synthesis act as building blocks for the hybrid material. The Au colloids undergo a surface-modification to enhance the particle stability and achieve thiol functionalities. A photochemical treatment is applied for the gelation process which is found to be reversible by subsequent addition of thiol molecules. Via supercritical drying aerogels are formed. The variation of the initial CdTe to Au nanoparticle ratio permits a facile tuning of the content and the properties of the resulting aerogels. The obtained structures were characterized by means of optical spectroscopy, electron microscopy, elemental analysis, and nitrogen physisorption.
KW - aerogels
KW - Au nanocrystals
KW - CdTe nanocrystals
KW - colloidal synthesis
KW - photochemical gelation
UR - http://www.scopus.com/inward/record.url?scp=84876224375&partnerID=8YFLogxK
U2 - 10.1002/adfm.201201674
DO - 10.1002/adfm.201201674
M3 - Article
AN - SCOPUS:84876224375
VL - 23
SP - 1903
EP - 1911
JO - Advanced functional materials
JF - Advanced functional materials
SN - 1616-301X
IS - 15
ER -