Details
| Original language | English |
|---|---|
| Pages (from-to) | 2089-2099 |
| Number of pages | 11 |
| Journal | Chemistry of materials |
| Volume | 28 |
| Issue number | 7 |
| Publication status | Published - 3 Mar 2016 |
Abstract
Highly porous self-supported three-dimensional aerogel monoliths are synthesized from strongly quantum confined quantum wells, namely, 5 monolayer thick CdSe and CdSe/CdS core/crown nanoplatelets. The aerogels are synthesized by hydrogelation of the aqueous quantum well solutions and subsequent supercritical drying. The aerogels are optically characterized by UV-vis absorption spectroscopy, emission spectroscopy, and photoluminescence (PL) decay analysis. Morphological and structural characterizations are achieved by transmission electron microscopy, scanning electron microscopy, and X-ray diffractometry. The macroscopic aerogels exhibit extremely low densities of 0.038 ± 0.007 g·cm-3 and a significantly high specific surface area of 219 m2·g-1 with nearly entirely (111) as the exposed crystal facet. Moreover, the aerogels feature properties related to quantum confinement comparable to those of their original building blocks with photoluminescence quantum yields up to 10.3%.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Materials Science(all)
- Materials Chemistry
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In: Chemistry of materials, Vol. 28, No. 7, 03.03.2016, p. 2089-2099.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Photoluminescent Aerogels from Quantum Wells
AU - Naskar, Suraj
AU - Miethe, Jan F.
AU - Sánchez-Paradinas, Sara
AU - Schmidt, Nadeschda
AU - Kanthasamy, Karthiga
AU - Behrens, Peter
AU - Pfnür, Herbert
AU - Bigall, Nadja C.
PY - 2016/3/3
Y1 - 2016/3/3
N2 - Highly porous self-supported three-dimensional aerogel monoliths are synthesized from strongly quantum confined quantum wells, namely, 5 monolayer thick CdSe and CdSe/CdS core/crown nanoplatelets. The aerogels are synthesized by hydrogelation of the aqueous quantum well solutions and subsequent supercritical drying. The aerogels are optically characterized by UV-vis absorption spectroscopy, emission spectroscopy, and photoluminescence (PL) decay analysis. Morphological and structural characterizations are achieved by transmission electron microscopy, scanning electron microscopy, and X-ray diffractometry. The macroscopic aerogels exhibit extremely low densities of 0.038 ± 0.007 g·cm-3 and a significantly high specific surface area of 219 m2·g-1 with nearly entirely (111) as the exposed crystal facet. Moreover, the aerogels feature properties related to quantum confinement comparable to those of their original building blocks with photoluminescence quantum yields up to 10.3%.
AB - Highly porous self-supported three-dimensional aerogel monoliths are synthesized from strongly quantum confined quantum wells, namely, 5 monolayer thick CdSe and CdSe/CdS core/crown nanoplatelets. The aerogels are synthesized by hydrogelation of the aqueous quantum well solutions and subsequent supercritical drying. The aerogels are optically characterized by UV-vis absorption spectroscopy, emission spectroscopy, and photoluminescence (PL) decay analysis. Morphological and structural characterizations are achieved by transmission electron microscopy, scanning electron microscopy, and X-ray diffractometry. The macroscopic aerogels exhibit extremely low densities of 0.038 ± 0.007 g·cm-3 and a significantly high specific surface area of 219 m2·g-1 with nearly entirely (111) as the exposed crystal facet. Moreover, the aerogels feature properties related to quantum confinement comparable to those of their original building blocks with photoluminescence quantum yields up to 10.3%.
UR - http://www.scopus.com/inward/record.url?scp=84964762491&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b04872
DO - 10.1021/acs.chemmater.5b04872
M3 - Article
AN - SCOPUS:84964762491
VL - 28
SP - 2089
EP - 2099
JO - Chemistry of materials
JF - Chemistry of materials
SN - 0897-4756
IS - 7
ER -