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In situ modification of three-dimensional polyphenylene dendrimer-templated CuO rice-shaped architectures with electron beam irradiation

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In situ modification of three-dimensional polyphenylene dendrimer-templated CuO rice-shaped architectures with electron beam irradiation

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dc.contributor.author Qi, Xiaoying
dc.contributor.author Huang, Yizhong
dc.contributor.author Klapper, Markus
dc.contributor.author Boey, Freddy Yin Chiang
dc.contributor.author Huang, Wei
dc.contributor.author Feyter, Steven De
dc.contributor.author Müllen, Klaus
dc.contributor.author Zhang, Hua
dc.date.accessioned 2012-09-19T08:56:25Z
dc.date.available 2012-09-19T08:56:25Z
dc.date.copyright 2010
dc.date.issued 2012-09-19
dc.identifier.citation 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.
dc.identifier.issn 1932-7447
dc.identifier.uri http://hdl.handle.net/10220/8581
dc.description.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.
dc.language.iso en
dc.relation.ispartofseries The journal of physical chemistry C
dc.rights © 2010 American Chemical Society.
dc.subject DRNTU::Engineering::Materials.
dc.title In situ modification of three-dimensional polyphenylene dendrimer-templated CuO rice-shaped architectures with electron beam irradiation
dc.type Journal Article
dc.contributor.school School of Materials Science and Engineering
dc.identifier.doi http://dx.doi.org/10.1021/jp1050468

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