Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Moto-oka Nishi-ku, Fukuoka, 819-0395, Japan.
Published: March 2017
AI Article Synopsis
Article Abstract
Anionic Keggin polyoxometalates (POMs) and ether linkage-enriched ammonium ions spontaneously self-assemble into rectangular ultrathin nanosheets in aqueous media. The structural flexibility of the cation is essential to form oriented nanosheets; as demonstrated by single-crystal X-ray diffraction measurements. The difference in initial conditions exerts significant influence on selecting for self-assembly pathways in the energy landscape. Photoillumination of the POM sheets in pure water causes dissolution of reduced POMs, which allowed site-specific etching of nanosheets using laser scanning microscopy. By contrast, photoetching was suppressed in aqueous AgNO and site-selective deposition of silver nanoparticles occurred as a consequence of electron transfer from the photoreduced POMs to Ag ions on the nanosheet surface.
Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Institute of Developmental Biology and Regenerative Medicine, College of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 P. R. China
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NHC Key Laboratory for Critical Care Medicine, School of Medicine, Tianjin First Central Hospital, Research Institute of Transplant Medicine, Organ Transplant Center, Nankai University, Tianjin, 300071, China.
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South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, China.
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