Details
| Original language | English |
|---|---|
| Pages (from-to) | 2309-2314 |
| Number of pages | 6 |
| Journal | Chemistry of materials |
| Volume | 22 |
| Issue number | 7 |
| Publication status | Published - 19 Feb 2010 |
| Externally published | Yes |
Abstract
In this paper, we report on a convenient and quick self-assembly of thioglycolic acid (TGA)-capped CdTe nanocrystals (NCs) into three-dimensional (3D) nanostructures in solution, in which large-scale nanowires are found as building blocks. The wet 3D nanostructures can be further dried by critical CO2 to obtain solids with a volume of about 1 cm3 and a density of about 1/2500th of bulk CdTe. By SEM, EDS, and HRTEM characterization, it is found that the nanowires actually are CdTe@Cd-TGA complex hybrid nanostructures in which many well-separated CdTe NCs are uniformly distributed. The hybrid nanowires can reach several micrometers in length and 25 - 8 nm in width. As a result of the CdTe NCs with their integrity and effective protection by the Cd-TGA complex, the hybrid nanowires and 3D nanostructures still show visually bright luminescence and retain the size-quantized properties of the CdTe NCs. This new kind of QD-based nanostructures may be suitable for subsequent processing into quantum-confined superstructures, materials and devices.
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. 22, No. 7, 19.02.2010, p. 2309-2314.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Self-Assembly of TGA-Capped CdTe Nanocrystals into Three-Dimensional Luminescent Nanostructures
AU - Chen, Hongjun
AU - Lesnyak, Vladimir
AU - Bigall, Nadja C.
AU - Gaponik, Nikolai
AU - Eychmüller, Alexander
PY - 2010/2/19
Y1 - 2010/2/19
N2 - In this paper, we report on a convenient and quick self-assembly of thioglycolic acid (TGA)-capped CdTe nanocrystals (NCs) into three-dimensional (3D) nanostructures in solution, in which large-scale nanowires are found as building blocks. The wet 3D nanostructures can be further dried by critical CO2 to obtain solids with a volume of about 1 cm3 and a density of about 1/2500th of bulk CdTe. By SEM, EDS, and HRTEM characterization, it is found that the nanowires actually are CdTe@Cd-TGA complex hybrid nanostructures in which many well-separated CdTe NCs are uniformly distributed. The hybrid nanowires can reach several micrometers in length and 25 - 8 nm in width. As a result of the CdTe NCs with their integrity and effective protection by the Cd-TGA complex, the hybrid nanowires and 3D nanostructures still show visually bright luminescence and retain the size-quantized properties of the CdTe NCs. This new kind of QD-based nanostructures may be suitable for subsequent processing into quantum-confined superstructures, materials and devices.
AB - In this paper, we report on a convenient and quick self-assembly of thioglycolic acid (TGA)-capped CdTe nanocrystals (NCs) into three-dimensional (3D) nanostructures in solution, in which large-scale nanowires are found as building blocks. The wet 3D nanostructures can be further dried by critical CO2 to obtain solids with a volume of about 1 cm3 and a density of about 1/2500th of bulk CdTe. By SEM, EDS, and HRTEM characterization, it is found that the nanowires actually are CdTe@Cd-TGA complex hybrid nanostructures in which many well-separated CdTe NCs are uniformly distributed. The hybrid nanowires can reach several micrometers in length and 25 - 8 nm in width. As a result of the CdTe NCs with their integrity and effective protection by the Cd-TGA complex, the hybrid nanowires and 3D nanostructures still show visually bright luminescence and retain the size-quantized properties of the CdTe NCs. This new kind of QD-based nanostructures may be suitable for subsequent processing into quantum-confined superstructures, materials and devices.
UR - http://www.scopus.com/inward/record.url?scp=77950814385&partnerID=8YFLogxK
U2 - 10.1021/cm9032572
DO - 10.1021/cm9032572
M3 - Article
AN - SCOPUS:77950814385
VL - 22
SP - 2309
EP - 2314
JO - Chemistry of materials
JF - Chemistry of materials
SN - 0897-4756
IS - 7
ER -