期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 32, 页码 9371-9374出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201603880
关键词
living polymers; nanoplatelets; nanostructures; quantum dots; self-assembly
资金
- Investissements d'Avenir LabEx PALM [ANR-10-LABX-0039-PALM]
Colloidal CdSe nanoplatelets are considered to be excellent candidates for many applications in nanotechnology. One of the current challenges is to self-assemble these colloidal quantum wells into large ordered structures to control their collective optical properties. We describe a simple and robust procedure to achieve controlled face-to-face self-assembly of CdSe nanoplatelets into micron-long polymer-like threads made of up to similar to 1000 particles. These structures are formed by addition of oleic acid to a stable colloidal dispersion of platelets, followed by slow drying and re-dispersion. We could control the average length of the CdSe nanoplatelet threads by varying the amount of added oleic acid. These 1-dimensional structures are flexible and feature a living polymer character because threads of a given length can be further grown through the addition of supplementary nanoplatelets at their reactive ends.
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