Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/94272
Title: In situ modification of three-dimensional polyphenylene dendrimer-templated CuO rice-shaped architectures with electron beam irradiation
Authors: Qi, Xiaoying
Huang, Yizhong
Klapper, Markus
Boey, Freddy Yin Chiang
Huang, Wei
Feyter, Steven De
Müllen, Klaus
Zhang, Hua
Keywords: DRNTU::Engineering::Materials
Issue Date: 2010
Source: Qi, X., Huang, Y., Klapper, M., Boey, F., Huang, W., Feyter, S. D., et al. (2010). In situ modification of three-dimensional polyphenylene dendrimer-templated CuO rice-shaped architectures with electron beam irradiation. The Journal of Physical Chemistry C, 114(32), 13465-13470.
Series/Report no.: The journal of physical chemistry C
Abstract: In this study, the high-energy electron beam of the transmission electron microscope (TEM) is utilized as an external force to in situ modify the polyphenylene dendrimer (G2Td(COOH)16) templated CuO rice-shaped architecture (RSA). By virtue of the nanoscale precision of this approach, the electron beam-modified RSA retains its rice shape while the internal primary CuO nanoparticles are converted to the Cu2O nanoparticles with increased size. Detailed investigation using a time-lapse TEM technique reveals that such a modification process is mainly constituted by two stages, involving the arrangement of the primary CuO nanoparticles and the transformation of the primary CuO into Cu2O nanoparticles. Within the modification process, the high-energy electron beam of TEM serves as the external driving force and energy resource to improve the orientation and increase the crystallinity of the single-phase CuO nanoparticles and subsequently transfer the nanoparticle phase from CuO to Cu2O. This study highlights a facile in situ way to finely tune the nanoscale morphology and chemical composition of nanoparticles and nanoparticle-based assembled structures.
URI: https://hdl.handle.net/10356/94272
http://hdl.handle.net/10220/8581
ISSN: 1932-7447
DOI: 10.1021/jp1050468
Rights: © 2010 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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